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提交 1d4284bd 编写于 作者: C Chris Mason
浏览文件
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Merge branch 'error-handling' into for-linus 

Conflicts:
	fs/btrfs/ctree.c
	fs/btrfs/disk-io.c
	fs/btrfs/extent-tree.c
	fs/btrfs/extent_io.c
	fs/btrfs/extent_io.h
	fs/btrfs/inode.c
	fs/btrfs/scrub.c
Signed-off-by: NChris Mason <chris.mason@oracle.com>
上级 b5d67f64 65139ed9
展开全部 隐藏空白更改
内联 并排
Showing with 2017 addition and 1018 deletion
fs/btrfs/async-thread.c
浏览文件 @ 1d4284bd
......@@ -171,11 +171,11 @@ static void check_pending_worker_creates(struct btrfs_worker_thread *worker)
spin_unlock_irqrestore(&workers->lock, flags);
}
static noinline int run_ordered_completions(struct btrfs_workers *workers,
static noinline void run_ordered_completions(struct btrfs_workers *workers,
struct btrfs_work *work)
{
if (!workers->ordered)
return 0;
return;
set_bit(WORK_DONE_BIT, &work->flags);
......@@ -213,7 +213,6 @@ static noinline int run_ordered_completions(struct btrfs_workers *workers,
}
spin_unlock(&workers->order_lock);
return 0;
}
static void put_worker(struct btrfs_worker_thread *worker)
......@@ -399,7 +398,7 @@ static int worker_loop(void *arg)
/*
* this will wait for all the worker threads to shutdown
*/
int btrfs_stop_workers(struct btrfs_workers *workers)
void btrfs_stop_workers(struct btrfs_workers *workers)
{
struct list_head *cur;
struct btrfs_worker_thread *worker;
......@@ -427,7 +426,6 @@ int btrfs_stop_workers(struct btrfs_workers *workers)
put_worker(worker);
}
spin_unlock_irq(&workers->lock);
return 0;
}
/*
......@@ -615,14 +613,14 @@ static struct btrfs_worker_thread *find_worker(struct btrfs_workers *workers)
* it was taken from. It is intended for use with long running work functions
* that make some progress and want to give the cpu up for others.
*/
int btrfs_requeue_work(struct btrfs_work *work)
void btrfs_requeue_work(struct btrfs_work *work)
{
struct btrfs_worker_thread *worker = work->worker;
unsigned long flags;
int wake = 0;
if (test_and_set_bit(WORK_QUEUED_BIT, &work->flags))
goto out;
return;
spin_lock_irqsave(&worker->lock, flags);
if (test_bit(WORK_HIGH_PRIO_BIT, &work->flags))
......@@ -649,9 +647,6 @@ int btrfs_requeue_work(struct btrfs_work *work)
if (wake)
wake_up_process(worker->task);
spin_unlock_irqrestore(&worker->lock, flags);
out:
return 0;
}
void btrfs_set_work_high_prio(struct btrfs_work *work)
......
fs/btrfs/async-thread.h
浏览文件 @ 1d4284bd
......@@ -111,9 +111,9 @@ struct btrfs_workers {
void btrfs_queue_worker(struct btrfs_workers *workers, struct btrfs_work *work);
int btrfs_start_workers(struct btrfs_workers *workers);
int btrfs_stop_workers(struct btrfs_workers *workers);
void btrfs_stop_workers(struct btrfs_workers *workers);
void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max,
struct btrfs_workers *async_starter);
int btrfs_requeue_work(struct btrfs_work *work);
void btrfs_requeue_work(struct btrfs_work *work);
void btrfs_set_work_high_prio(struct btrfs_work *work);
#endif
fs/btrfs/compression.c
浏览文件 @ 1d4284bd
......@@ -226,8 +226,8 @@ static void end_compressed_bio_read(struct bio *bio, int err)
* Clear the writeback bits on all of the file
* pages for a compressed write
*/
static noinline int end_compressed_writeback(struct inode *inode, u64 start,
unsigned long ram_size)
static noinline void end_compressed_writeback(struct inode *inode, u64 start,
unsigned long ram_size)
{
unsigned long index = start >> PAGE_CACHE_SHIFT;
unsigned long end_index = (start + ram_size - 1) >> PAGE_CACHE_SHIFT;
......@@ -253,7 +253,6 @@ static noinline int end_compressed_writeback(struct inode *inode, u64 start,
index += ret;
}
/* the inode may be gone now */
return 0;
}
/*
......@@ -392,16 +391,16 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
*/
atomic_inc(&cb->pending_bios);
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
if (!skip_sum) {
ret = btrfs_csum_one_bio(root, inode, bio,
start, 1);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
}
ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
bio_put(bio);
......@@ -421,15 +420,15 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
bio_get(bio);
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
if (!skip_sum) {
ret = btrfs_csum_one_bio(root, inode, bio, start, 1);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
}
ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
bio_put(bio);
return 0;
......@@ -497,7 +496,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
* sure they map to this compressed extent on disk.
*/
set_page_extent_mapped(page);
lock_extent(tree, last_offset, end, GFP_NOFS);
lock_extent(tree, last_offset, end);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, last_offset,
PAGE_CACHE_SIZE);
......@@ -507,7 +506,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
(last_offset + PAGE_CACHE_SIZE > extent_map_end(em)) ||
(em->block_start >> 9) != cb->orig_bio->bi_sector) {
free_extent_map(em);
unlock_extent(tree, last_offset, end, GFP_NOFS);
unlock_extent(tree, last_offset, end);
unlock_page(page);
page_cache_release(page);
break;
......@@ -535,7 +534,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
nr_pages++;
page_cache_release(page);
} else {
unlock_extent(tree, last_offset, end, GFP_NOFS);
unlock_extent(tree, last_offset, end);
unlock_page(page);
page_cache_release(page);
break;
......@@ -662,7 +661,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
bio_get(comp_bio);
ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
/*
* inc the count before we submit the bio so
......@@ -675,14 +674,14 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
ret = btrfs_lookup_bio_sums(root, inode,
comp_bio, sums);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
}
sums += (comp_bio->bi_size + root->sectorsize - 1) /
root->sectorsize;
ret = btrfs_map_bio(root, READ, comp_bio,
mirror_num, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
bio_put(comp_bio);
......@@ -698,15 +697,15 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
bio_get(comp_bio);
ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
ret = btrfs_lookup_bio_sums(root, inode, comp_bio, sums);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
}
ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
bio_put(comp_bio);
return 0;
......@@ -734,7 +733,7 @@ struct btrfs_compress_op *btrfs_compress_op[] = {
&btrfs_lzo_compress,
};
int __init btrfs_init_compress(void)
void __init btrfs_init_compress(void)
{
int i;
......@@ -744,7 +743,6 @@ int __init btrfs_init_compress(void)
atomic_set(&comp_alloc_workspace[i], 0);
init_waitqueue_head(&comp_workspace_wait[i]);
}
return 0;
}
/*
......
fs/btrfs/compression.h
浏览文件 @ 1d4284bd
......@@ -19,7 +19,7 @@
#ifndef __BTRFS_COMPRESSION_
#define __BTRFS_COMPRESSION_
int btrfs_init_compress(void);
void btrfs_init_compress(void);
void btrfs_exit_compress(void);
int btrfs_compress_pages(int type, struct address_space *mapping,
......
fs/btrfs/ctree.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/ctree.h
浏览文件 @ 1d4284bd
......@@ -1525,6 +1525,7 @@ struct btrfs_ioctl_defrag_range_args {
#define BTRFS_MOUNT_SKIP_BALANCE (1 << 19)
#define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20)
#define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21)
#define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22)
#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
......@@ -2518,8 +2519,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root,
u64 start, u64 len);
int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
......@@ -2582,8 +2583,8 @@ void btrfs_block_rsv_release(struct btrfs_root *root,
u64 num_bytes);
int btrfs_set_block_group_ro(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
int btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
void btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
void btrfs_put_block_group_cache(struct btrfs_fs_info *info);
u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
int btrfs_error_unpin_extent_range(struct btrfs_root *root,
......@@ -2602,9 +2603,9 @@ int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2);
int btrfs_previous_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid,
int type);
int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key);
void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key);
struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
......@@ -2624,12 +2625,13 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
struct extent_buffer **cow_ret, u64 new_root_objectid);
int btrfs_block_can_be_shared(struct btrfs_root *root,
struct extent_buffer *buf);
int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, u32 data_size);
int btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
u32 new_size, int from_end);
void btrfs_extend_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u32 data_size);
void btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
u32 new_size, int from_end);
int btrfs_split_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
......@@ -2663,10 +2665,10 @@ static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
return btrfs_del_items(trans, root, path, path->slots[0], 1);
}
int setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr);
void setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr);
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, void *data, u32 data_size);
int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
......@@ -2693,9 +2695,9 @@ static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p)
}
int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
void btrfs_drop_snapshot(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv, int update_ref,
int for_reloc);
int __must_check btrfs_drop_snapshot(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
int update_ref, int for_reloc);
int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *node,
......@@ -2757,9 +2759,10 @@ int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_root_item
*item);
int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_root_item
*item);
int __must_check btrfs_update_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_key *key,
struct btrfs_root_item *item);
int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct
btrfs_root_item *item, struct btrfs_key *key);
int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid);
......@@ -2943,7 +2946,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root);
void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size);
int btrfs_invalidate_inodes(struct btrfs_root *root);
void btrfs_invalidate_inodes(struct btrfs_root *root);
void btrfs_add_delayed_iput(struct inode *inode);
void btrfs_run_delayed_iputs(struct btrfs_root *root);
int btrfs_prealloc_file_range(struct inode *inode, int mode,
......@@ -2995,13 +2998,41 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
/* super.c */
int btrfs_parse_options(struct btrfs_root *root, char *options);
int btrfs_sync_fs(struct super_block *sb, int wait);
void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...);
void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function,
unsigned int line, int errno);
unsigned int line, int errno, const char *fmt, ...);
void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *function,
unsigned int line, int errno);
#define btrfs_abort_transaction(trans, root, errno) \
do { \
__btrfs_abort_transaction(trans, root, __func__, \
__LINE__, errno); \
} while (0)
#define btrfs_std_error(fs_info, errno) \
do { \
if ((errno)) \
__btrfs_std_error((fs_info), __func__, __LINE__, (errno));\
__btrfs_std_error((fs_info), __func__, \
__LINE__, (errno), NULL); \
} while (0)
#define btrfs_error(fs_info, errno, fmt, args...) \
do { \
__btrfs_std_error((fs_info), __func__, __LINE__, \
(errno), fmt, ##args); \
} while (0)
void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
unsigned int line, int errno, const char *fmt, ...);
#define btrfs_panic(fs_info, errno, fmt, args...) \
do { \
struct btrfs_fs_info *_i = (fs_info); \
__btrfs_panic(_i, __func__, __LINE__, errno, fmt, ##args); \
BUG_ON(!(_i->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)); \
} while (0)
/* acl.c */
......@@ -3037,16 +3068,17 @@ void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_pending_snapshot *pending,
u64 *bytes_to_reserve);
void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_pending_snapshot *pending);
/* scrub.c */
int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end,
struct btrfs_scrub_progress *progress, int readonly);
int btrfs_scrub_pause(struct btrfs_root *root);
int btrfs_scrub_pause_super(struct btrfs_root *root);
int btrfs_scrub_continue(struct btrfs_root *root);
int btrfs_scrub_continue_super(struct btrfs_root *root);
void btrfs_scrub_pause(struct btrfs_root *root);
void btrfs_scrub_pause_super(struct btrfs_root *root);
void btrfs_scrub_continue(struct btrfs_root *root);
void btrfs_scrub_continue_super(struct btrfs_root *root);
int __btrfs_scrub_cancel(struct btrfs_fs_info *info);
int btrfs_scrub_cancel(struct btrfs_root *root);
int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev);
int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid);
......
fs/btrfs/delayed-inode.c
浏览文件 @ 1d4284bd
......@@ -115,6 +115,7 @@ static struct btrfs_delayed_node *btrfs_get_delayed_node(struct inode *inode)
return NULL;
}
/* Will return either the node or PTR_ERR(-ENOMEM) */
static struct btrfs_delayed_node *btrfs_get_or_create_delayed_node(
struct inode *inode)
{
......@@ -836,10 +837,8 @@ static int btrfs_batch_insert_items(struct btrfs_trans_handle *trans,
btrfs_clear_path_blocking(path, NULL, 0);
/* insert the keys of the items */
ret = setup_items_for_insert(trans, root, path, keys, data_size,
total_data_size, total_size, nitems);
if (ret)
goto error;
setup_items_for_insert(trans, root, path, keys, data_size,
total_data_size, total_size, nitems);
/* insert the dir index items */
slot = path->slots[0];
......@@ -1108,16 +1107,25 @@ static int btrfs_update_delayed_inode(struct btrfs_trans_handle *trans,
return 0;
}
/* Called when committing the transaction. */
/*
* Called when committing the transaction.
* Returns 0 on success.
* Returns < 0 on error and returns with an aborted transaction with any
* outstanding delayed items cleaned up.
*/
int btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
struct btrfs_root *curr_root = root;
struct btrfs_delayed_root *delayed_root;
struct btrfs_delayed_node *curr_node, *prev_node;
struct btrfs_path *path;
struct btrfs_block_rsv *block_rsv;
int ret = 0;
if (trans->aborted)
return -EIO;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
......@@ -1130,17 +1138,18 @@ int btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
curr_node = btrfs_first_delayed_node(delayed_root);
while (curr_node) {
root = curr_node->root;
ret = btrfs_insert_delayed_items(trans, path, root,
curr_root = curr_node->root;
ret = btrfs_insert_delayed_items(trans, path, curr_root,
curr_node);
if (!ret)
ret = btrfs_delete_delayed_items(trans, path, root,
curr_node);
ret = btrfs_delete_delayed_items(trans, path,
curr_root, curr_node);
if (!ret)
ret = btrfs_update_delayed_inode(trans, root, path,
curr_node);
ret = btrfs_update_delayed_inode(trans, curr_root,
path, curr_node);
if (ret) {
btrfs_release_delayed_node(curr_node);
btrfs_abort_transaction(trans, root, ret);
break;
}
......@@ -1151,6 +1160,7 @@ int btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
btrfs_free_path(path);
trans->block_rsv = block_rsv;
return ret;
}
......@@ -1371,6 +1381,7 @@ void btrfs_balance_delayed_items(struct btrfs_root *root)
btrfs_wq_run_delayed_node(delayed_root, root, 0);
}
/* Will return 0 or -ENOMEM */
int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *name,
int name_len, struct inode *dir,
......
fs/btrfs/delayed-ref.c
浏览文件 @ 1d4284bd
......@@ -420,7 +420,7 @@ update_existing_head_ref(struct btrfs_delayed_ref_node *existing,
* this does all the dirty work in terms of maintaining the correct
* overall modification count.
*/
static noinline int add_delayed_ref_head(struct btrfs_fs_info *fs_info,
static noinline void add_delayed_ref_head(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_delayed_ref_node *ref,
u64 bytenr, u64 num_bytes,
......@@ -487,20 +487,19 @@ static noinline int add_delayed_ref_head(struct btrfs_fs_info *fs_info,
* we've updated the existing ref, free the newly
* allocated ref
*/
kfree(ref);
kfree(head_ref);
} else {
delayed_refs->num_heads++;
delayed_refs->num_heads_ready++;
delayed_refs->num_entries++;
trans->delayed_ref_updates++;
}
return 0;
}
/*
* helper to insert a delayed tree ref into the rbtree.
*/
static noinline int add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
static noinline void add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_delayed_ref_node *ref,
u64 bytenr, u64 num_bytes, u64 parent,
......@@ -549,18 +548,17 @@ static noinline int add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
* we've updated the existing ref, free the newly
* allocated ref
*/
kfree(ref);
kfree(full_ref);
} else {
delayed_refs->num_entries++;
trans->delayed_ref_updates++;
}
return 0;
}
/*
* helper to insert a delayed data ref into the rbtree.
*/
static noinline int add_delayed_data_ref(struct btrfs_fs_info *fs_info,
static noinline void add_delayed_data_ref(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_delayed_ref_node *ref,
u64 bytenr, u64 num_bytes, u64 parent,
......@@ -611,12 +609,11 @@ static noinline int add_delayed_data_ref(struct btrfs_fs_info *fs_info,
* we've updated the existing ref, free the newly
* allocated ref
*/
kfree(ref);
kfree(full_ref);
} else {
delayed_refs->num_entries++;
trans->delayed_ref_updates++;
}
return 0;
}
/*
......@@ -634,7 +631,6 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
struct btrfs_delayed_tree_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
int ret;
BUG_ON(extent_op && extent_op->is_data);
ref = kmalloc(sizeof(*ref), GFP_NOFS);
......@@ -656,14 +652,12 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
* insert both the head node and the new ref without dropping
* the spin lock
*/
ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
num_bytes, action, 0);
BUG_ON(ret);
ret = add_delayed_tree_ref(fs_info, trans, &ref->node, bytenr,
add_delayed_tree_ref(fs_info, trans, &ref->node, bytenr,
num_bytes, parent, ref_root, level, action,
for_cow);
BUG_ON(ret);
if (!need_ref_seq(for_cow, ref_root) &&
waitqueue_active(&delayed_refs->seq_wait))
wake_up(&delayed_refs->seq_wait);
......@@ -685,7 +679,6 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
struct btrfs_delayed_data_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
int ret;
BUG_ON(extent_op && !extent_op->is_data);
ref = kmalloc(sizeof(*ref), GFP_NOFS);
......@@ -707,14 +700,12 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
* insert both the head node and the new ref without dropping
* the spin lock
*/
ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
num_bytes, action, 1);
BUG_ON(ret);
ret = add_delayed_data_ref(fs_info, trans, &ref->node, bytenr,
add_delayed_data_ref(fs_info, trans, &ref->node, bytenr,
num_bytes, parent, ref_root, owner, offset,
action, for_cow);
BUG_ON(ret);
if (!need_ref_seq(for_cow, ref_root) &&
waitqueue_active(&delayed_refs->seq_wait))
wake_up(&delayed_refs->seq_wait);
......@@ -729,7 +720,6 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
{
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
int ret;
head_ref = kmalloc(sizeof(*head_ref), GFP_NOFS);
if (!head_ref)
......@@ -740,10 +730,9 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
delayed_refs = &trans->transaction->delayed_refs;
spin_lock(&delayed_refs->lock);
ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
num_bytes, BTRFS_UPDATE_DELAYED_HEAD,
extent_op->is_data);
BUG_ON(ret);
if (waitqueue_active(&delayed_refs->seq_wait))
wake_up(&delayed_refs->seq_wait);
......
fs/btrfs/dir-item.c
浏览文件 @ 1d4284bd
......@@ -49,9 +49,8 @@ static struct btrfs_dir_item *insert_with_overflow(struct btrfs_trans_handle
di = btrfs_match_dir_item_name(root, path, name, name_len);
if (di)
return ERR_PTR(-EEXIST);
ret = btrfs_extend_item(trans, root, path, data_size);
}
if (ret < 0)
btrfs_extend_item(trans, root, path, data_size);
} else if (ret < 0)
return ERR_PTR(ret);
WARN_ON(ret > 0);
leaf = path->nodes[0];
......@@ -116,6 +115,7 @@ int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
* 'location' is the key to stuff into the directory item, 'type' is the
* type of the inode we're pointing to, and 'index' is the sequence number
* to use for the second index (if one is created).
* Will return 0 or -ENOMEM
*/
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, const char *name, int name_len,
......@@ -383,8 +383,8 @@ int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
start = btrfs_item_ptr_offset(leaf, path->slots[0]);
memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
item_len - (ptr + sub_item_len - start));
ret = btrfs_truncate_item(trans, root, path,
item_len - sub_item_len, 1);
btrfs_truncate_item(trans, root, path,
item_len - sub_item_len, 1);
}
return ret;
}
......
fs/btrfs/disk-io.c
浏览文件 @ 1d4284bd
......@@ -48,20 +48,19 @@
static struct extent_io_ops btree_extent_io_ops;
static void end_workqueue_fn(struct btrfs_work *work);
static void free_fs_root(struct btrfs_root *root);
static void btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
int read_only);
static int btrfs_destroy_ordered_operations(struct btrfs_root *root);
static int btrfs_destroy_ordered_extents(struct btrfs_root *root);
static void btrfs_destroy_ordered_operations(struct btrfs_root *root);
static void btrfs_destroy_ordered_extents(struct btrfs_root *root);
static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
struct btrfs_root *root);
static int btrfs_destroy_pending_snapshots(struct btrfs_transaction *t);
static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root);
static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t);
static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root);
static int btrfs_destroy_marked_extents(struct btrfs_root *root,
struct extent_io_tree *dirty_pages,
int mark);
static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
struct extent_io_tree *pinned_extents);
static int btrfs_cleanup_transaction(struct btrfs_root *root);
/*
* end_io_wq structs are used to do processing in task context when an IO is
......@@ -99,6 +98,7 @@ struct async_submit_bio {
*/
u64 bio_offset;
struct btrfs_work work;
int error;
};
/*
......@@ -332,7 +332,7 @@ static int verify_parent_transid(struct extent_io_tree *io_tree,
return 0;
lock_extent_bits(io_tree, eb->start, eb->start + eb->len - 1,
0, &cached_state, GFP_NOFS);
0, &cached_state);
if (extent_buffer_uptodate(eb) &&
btrfs_header_generation(eb) == parent_transid) {
ret = 0;
......@@ -425,7 +425,6 @@ static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
eb = (struct extent_buffer *)page->private;
if (page != eb->pages[0])
return 0;
found_start = btrfs_header_bytenr(eb);
if (found_start != start) {
WARN_ON(1);
......@@ -727,11 +726,14 @@ unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info)
static void run_one_async_start(struct btrfs_work *work)
{
struct async_submit_bio *async;
int ret;
async = container_of(work, struct async_submit_bio, work);
async->submit_bio_start(async->inode, async->rw, async->bio,
async->mirror_num, async->bio_flags,
async->bio_offset);
ret = async->submit_bio_start(async->inode, async->rw, async->bio,
async->mirror_num, async->bio_flags,
async->bio_offset);
if (ret)
async->error = ret;
}
static void run_one_async_done(struct btrfs_work *work)
......@@ -752,6 +754,12 @@ static void run_one_async_done(struct btrfs_work *work)
waitqueue_active(&fs_info->async_submit_wait))
wake_up(&fs_info->async_submit_wait);
/* If an error occured we just want to clean up the bio and move on */
if (async->error) {
bio_endio(async->bio, async->error);
return;
}
async->submit_bio_done(async->inode, async->rw, async->bio,
async->mirror_num, async->bio_flags,
async->bio_offset);
......@@ -793,6 +801,8 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
async->bio_flags = bio_flags;
async->bio_offset = bio_offset;
async->error = 0;
atomic_inc(&fs_info->nr_async_submits);
if (rw & REQ_SYNC)
......@@ -814,15 +824,18 @@ static int btree_csum_one_bio(struct bio *bio)
struct bio_vec *bvec = bio->bi_io_vec;
int bio_index = 0;
struct btrfs_root *root;
int ret = 0;
WARN_ON(bio->bi_vcnt <= 0);
while (bio_index < bio->bi_vcnt) {
root = BTRFS_I(bvec->bv_page->mapping->host)->root;
csum_dirty_buffer(root, bvec->bv_page);
ret = csum_dirty_buffer(root, bvec->bv_page);
if (ret)
break;
bio_index++;
bvec++;
}
return 0;
return ret;
}
static int __btree_submit_bio_start(struct inode *inode, int rw,
......@@ -834,8 +847,7 @@ static int __btree_submit_bio_start(struct inode *inode, int rw,
* when we're called for a write, we're already in the async
* submission context. Just jump into btrfs_map_bio
*/
btree_csum_one_bio(bio);
return 0;
return btree_csum_one_bio(bio);
}
static int __btree_submit_bio_done(struct inode *inode, int rw, struct bio *bio,
......@@ -863,7 +875,8 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
*/
ret = btrfs_bio_wq_end_io(BTRFS_I(inode)->root->fs_info,
bio, 1);
BUG_ON(ret);
if (ret)
return ret;
return btrfs_map_bio(BTRFS_I(inode)->root, rw, bio,
mirror_num, 0);
}
......@@ -1080,8 +1093,8 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
}
int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct extent_buffer *buf)
void clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct extent_buffer *buf)
{
if (btrfs_header_generation(buf) ==
root->fs_info->running_transaction->transid) {
......@@ -1091,8 +1104,14 @@ int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
spin_lock(&root->fs_info->delalloc_lock);
if (root->fs_info->dirty_metadata_bytes >= buf->len)
root->fs_info->dirty_metadata_bytes -= buf->len;
else
WARN_ON(1);
else {
spin_unlock(&root->fs_info->delalloc_lock);
btrfs_panic(root->fs_info, -EOVERFLOW,
"Can't clear %lu bytes from "
" dirty_mdatadata_bytes (%lu)",
buf->len,
root->fs_info->dirty_metadata_bytes);
}
spin_unlock(&root->fs_info->delalloc_lock);
}
......@@ -1100,13 +1119,12 @@ int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
btrfs_set_lock_blocking(buf);
clear_extent_buffer_dirty(buf);
}
return 0;
}
static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
u32 stripesize, struct btrfs_root *root,
struct btrfs_fs_info *fs_info,
u64 objectid)
static void __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
u32 stripesize, struct btrfs_root *root,
struct btrfs_fs_info *fs_info,
u64 objectid)
{
root->node = NULL;
root->commit_root = NULL;
......@@ -1158,13 +1176,12 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->defrag_running = 0;
root->root_key.objectid = objectid;
root->anon_dev = 0;
return 0;
}
static int find_and_setup_root(struct btrfs_root *tree_root,
struct btrfs_fs_info *fs_info,
u64 objectid,
struct btrfs_root *root)
static int __must_check find_and_setup_root(struct btrfs_root *tree_root,
struct btrfs_fs_info *fs_info,
u64 objectid,
struct btrfs_root *root)
{
int ret;
u32 blocksize;
......@@ -1177,7 +1194,8 @@ static int find_and_setup_root(struct btrfs_root *tree_root,
&root->root_item, &root->root_key);
if (ret > 0)
return -ENOENT;
BUG_ON(ret);
else if (ret < 0)
return ret;
generation = btrfs_root_generation(&root->root_item);
blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
......@@ -1346,7 +1364,7 @@ struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root,
root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item),
blocksize, generation);
root->commit_root = btrfs_root_node(root);
BUG_ON(!root->node);
BUG_ON(!root->node); /* -ENOMEM */
out:
if (location->objectid != BTRFS_TREE_LOG_OBJECTID) {
root->ref_cows = 1;
......@@ -1537,9 +1555,10 @@ static int transaction_kthread(void *arg)
u64 transid;
unsigned long now;
unsigned long delay;
int ret;
bool cannot_commit;
do {
cannot_commit = false;
delay = HZ * 30;
vfs_check_frozen(root->fs_info->sb, SB_FREEZE_WRITE);
mutex_lock(&root->fs_info->transaction_kthread_mutex);
......@@ -1561,11 +1580,14 @@ static int transaction_kthread(void *arg)
transid = cur->transid;
spin_unlock(&root->fs_info->trans_lock);
/* If the file system is aborted, this will always fail. */
trans = btrfs_join_transaction(root);
BUG_ON(IS_ERR(trans));
if (IS_ERR(trans)) {
cannot_commit = true;
goto sleep;
}
if (transid == trans->transid) {
ret = btrfs_commit_transaction(trans, root);
BUG_ON(ret);
btrfs_commit_transaction(trans, root);
} else {
btrfs_end_transaction(trans, root);
}
......@@ -1576,7 +1598,8 @@ static int transaction_kthread(void *arg)
if (!try_to_freeze()) {
set_current_state(TASK_INTERRUPTIBLE);
if (!kthread_should_stop() &&
!btrfs_transaction_blocked(root->fs_info))
(!btrfs_transaction_blocked(root->fs_info) ||
cannot_commit))
schedule_timeout(delay);
__set_current_state(TASK_RUNNING);
}
......@@ -2028,7 +2051,12 @@ int open_ctree(struct super_block *sb,
/* check FS state, whether FS is broken. */
fs_info->fs_state |= btrfs_super_flags(disk_super);
btrfs_check_super_valid(fs_info, sb->s_flags & MS_RDONLY);
ret = btrfs_check_super_valid(fs_info, sb->s_flags & MS_RDONLY);
if (ret) {
printk(KERN_ERR "btrfs: superblock contains fatal errors\n");
err = ret;
goto fail_alloc;
}
/*
* run through our array of backup supers and setup
......@@ -2218,6 +2246,14 @@ int open_ctree(struct super_block *sb,
goto fail_sb_buffer;
}
if ((features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) &&
(leafsize != nodesize || sectorsize != nodesize)) {
printk(KERN_WARNING "btrfs: unequal leaf/node/sector sizes "
"are not allowed for mixed block groups on %s\n",
sb->s_id);
goto fail_sb_buffer;
}
mutex_lock(&fs_info->chunk_mutex);
ret = btrfs_read_sys_array(tree_root);
mutex_unlock(&fs_info->chunk_mutex);
......@@ -2237,7 +2273,7 @@ int open_ctree(struct super_block *sb,
chunk_root->node = read_tree_block(chunk_root,
btrfs_super_chunk_root(disk_super),
blocksize, generation);
BUG_ON(!chunk_root->node);
BUG_ON(!chunk_root->node); /* -ENOMEM */
if (!test_bit(EXTENT_BUFFER_UPTODATE, &chunk_root->node->bflags)) {
printk(KERN_WARNING "btrfs: failed to read chunk root on %s\n",
sb->s_id);
......@@ -2377,21 +2413,31 @@ int open_ctree(struct super_block *sb,
log_tree_root->node = read_tree_block(tree_root, bytenr,
blocksize,
generation + 1);
/* returns with log_tree_root freed on success */
ret = btrfs_recover_log_trees(log_tree_root);
BUG_ON(ret);
if (ret) {
btrfs_error(tree_root->fs_info, ret,
"Failed to recover log tree");
free_extent_buffer(log_tree_root->node);
kfree(log_tree_root);
goto fail_trans_kthread;
}
if (sb->s_flags & MS_RDONLY) {
ret = btrfs_commit_super(tree_root);
BUG_ON(ret);
ret = btrfs_commit_super(tree_root);
if (ret)
goto fail_trans_kthread;
}
}
ret = btrfs_find_orphan_roots(tree_root);
BUG_ON(ret);
if (ret)
goto fail_trans_kthread;
if (!(sb->s_flags & MS_RDONLY)) {
ret = btrfs_cleanup_fs_roots(fs_info);
BUG_ON(ret);
if (ret) {
}
ret = btrfs_recover_relocation(tree_root);
if (ret < 0) {
......@@ -2811,6 +2857,8 @@ int write_all_supers(struct btrfs_root *root, int max_mirrors)
if (total_errors > max_errors) {
printk(KERN_ERR "btrfs: %d errors while writing supers\n",
total_errors);
/* This shouldn't happen. FUA is masked off if unsupported */
BUG();
}
......@@ -2827,9 +2875,9 @@ int write_all_supers(struct btrfs_root *root, int max_mirrors)
}
mutex_unlock(&root->fs_info->fs_devices->device_list_mutex);
if (total_errors > max_errors) {
printk(KERN_ERR "btrfs: %d errors while writing supers\n",
total_errors);
BUG();
btrfs_error(root->fs_info, -EIO,
"%d errors while writing supers", total_errors);
return -EIO;
}
return 0;
}
......@@ -2843,7 +2891,20 @@ int write_ctree_super(struct btrfs_trans_handle *trans,
return ret;
}
int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
/* Kill all outstanding I/O */
void btrfs_abort_devices(struct btrfs_root *root)
{
struct list_head *head;
struct btrfs_device *dev;
mutex_lock(&root->fs_info->fs_devices->device_list_mutex);
head = &root->fs_info->fs_devices->devices;
list_for_each_entry_rcu(dev, head, dev_list) {
blk_abort_queue(dev->bdev->bd_disk->queue);
}
mutex_unlock(&root->fs_info->fs_devices->device_list_mutex);
}
void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
{
spin_lock(&fs_info->fs_roots_radix_lock);
radix_tree_delete(&fs_info->fs_roots_radix,
......@@ -2856,7 +2917,6 @@ int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
__btrfs_remove_free_space_cache(root->free_ino_pinned);
__btrfs_remove_free_space_cache(root->free_ino_ctl);
free_fs_root(root);
return 0;
}
static void free_fs_root(struct btrfs_root *root)
......@@ -2873,7 +2933,7 @@ static void free_fs_root(struct btrfs_root *root)
kfree(root);
}
static int del_fs_roots(struct btrfs_fs_info *fs_info)
static void del_fs_roots(struct btrfs_fs_info *fs_info)
{
int ret;
struct btrfs_root *gang[8];
......@@ -2902,7 +2962,6 @@ static int del_fs_roots(struct btrfs_fs_info *fs_info)
for (i = 0; i < ret; i++)
btrfs_free_fs_root(fs_info, gang[i]);
}
return 0;
}
int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
......@@ -2951,14 +3010,21 @@ int btrfs_commit_super(struct btrfs_root *root)
if (IS_ERR(trans))
return PTR_ERR(trans);
ret = btrfs_commit_transaction(trans, root);
BUG_ON(ret);
if (ret)
return ret;
/* run commit again to drop the original snapshot */
trans = btrfs_join_transaction(root);
if (IS_ERR(trans))
return PTR_ERR(trans);
btrfs_commit_transaction(trans, root);
ret = btrfs_commit_transaction(trans, root);
if (ret)
return ret;
ret = btrfs_write_and_wait_transaction(NULL, root);
BUG_ON(ret);
if (ret) {
btrfs_error(root->fs_info, ret,
"Failed to sync btree inode to disk.");
return ret;
}
ret = write_ctree_super(NULL, root, 0);
return ret;
......@@ -3209,15 +3275,23 @@ static int btree_lock_page_hook(struct page *page, void *data,
return 0;
}
static void btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
int read_only)
{
if (btrfs_super_csum_type(fs_info->super_copy) >= ARRAY_SIZE(btrfs_csum_sizes)) {
printk(KERN_ERR "btrfs: unsupported checksum algorithm\n");
return -EINVAL;
}
if (read_only)
return;
return 0;
if (fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR)
if (fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
printk(KERN_WARNING "warning: mount fs with errors, "
"running btrfsck is recommended\n");
}
return 0;
}
int btrfs_error_commit_super(struct btrfs_root *root)
......@@ -3239,7 +3313,7 @@ int btrfs_error_commit_super(struct btrfs_root *root)
return ret;
}
static int btrfs_destroy_ordered_operations(struct btrfs_root *root)
static void btrfs_destroy_ordered_operations(struct btrfs_root *root)
{
struct btrfs_inode *btrfs_inode;
struct list_head splice;
......@@ -3261,11 +3335,9 @@ static int btrfs_destroy_ordered_operations(struct btrfs_root *root)
spin_unlock(&root->fs_info->ordered_extent_lock);
mutex_unlock(&root->fs_info->ordered_operations_mutex);
return 0;
}
static int btrfs_destroy_ordered_extents(struct btrfs_root *root)
static void btrfs_destroy_ordered_extents(struct btrfs_root *root)
{
struct list_head splice;
struct btrfs_ordered_extent *ordered;
......@@ -3297,12 +3369,10 @@ static int btrfs_destroy_ordered_extents(struct btrfs_root *root)
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
struct btrfs_root *root)
int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
struct btrfs_root *root)
{
struct rb_node *node;
struct btrfs_delayed_ref_root *delayed_refs;
......@@ -3311,6 +3381,7 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
delayed_refs = &trans->delayed_refs;
again:
spin_lock(&delayed_refs->lock);
if (delayed_refs->num_entries == 0) {
spin_unlock(&delayed_refs->lock);
......@@ -3332,6 +3403,7 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
struct btrfs_delayed_ref_head *head;
head = btrfs_delayed_node_to_head(ref);
spin_unlock(&delayed_refs->lock);
mutex_lock(&head->mutex);
kfree(head->extent_op);
delayed_refs->num_heads--;
......@@ -3339,8 +3411,9 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
delayed_refs->num_heads_ready--;
list_del_init(&head->cluster);
mutex_unlock(&head->mutex);
btrfs_put_delayed_ref(ref);
goto again;
}
spin_unlock(&delayed_refs->lock);
btrfs_put_delayed_ref(ref);
......@@ -3353,7 +3426,7 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
return ret;
}
static int btrfs_destroy_pending_snapshots(struct btrfs_transaction *t)
static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t)
{
struct btrfs_pending_snapshot *snapshot;
struct list_head splice;
......@@ -3371,11 +3444,9 @@ static int btrfs_destroy_pending_snapshots(struct btrfs_transaction *t)
kfree(snapshot);
}
return 0;
}
static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root)
static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root)
{
struct btrfs_inode *btrfs_inode;
struct list_head splice;
......@@ -3395,8 +3466,6 @@ static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root)
}
spin_unlock(&root->fs_info->delalloc_lock);
return 0;
}
static int btrfs_destroy_marked_extents(struct btrfs_root *root,
......@@ -3487,13 +3556,43 @@ static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
return 0;
}
static int btrfs_cleanup_transaction(struct btrfs_root *root)
void btrfs_cleanup_one_transaction(struct btrfs_transaction *cur_trans,
struct btrfs_root *root)
{
btrfs_destroy_delayed_refs(cur_trans, root);
btrfs_block_rsv_release(root, &root->fs_info->trans_block_rsv,
cur_trans->dirty_pages.dirty_bytes);
/* FIXME: cleanup wait for commit */
cur_trans->in_commit = 1;
cur_trans->blocked = 1;
if (waitqueue_active(&root->fs_info->transaction_blocked_wait))
wake_up(&root->fs_info->transaction_blocked_wait);
cur_trans->blocked = 0;
if (waitqueue_active(&root->fs_info->transaction_wait))
wake_up(&root->fs_info->transaction_wait);
cur_trans->commit_done = 1;
if (waitqueue_active(&cur_trans->commit_wait))
wake_up(&cur_trans->commit_wait);
btrfs_destroy_pending_snapshots(cur_trans);
btrfs_destroy_marked_extents(root, &cur_trans->dirty_pages,
EXTENT_DIRTY);
/*
memset(cur_trans, 0, sizeof(*cur_trans));
kmem_cache_free(btrfs_transaction_cachep, cur_trans);
*/
}
int btrfs_cleanup_transaction(struct btrfs_root *root)
{
struct btrfs_transaction *t;
LIST_HEAD(list);
WARN_ON(1);
mutex_lock(&root->fs_info->transaction_kthread_mutex);
spin_lock(&root->fs_info->trans_lock);
......@@ -3558,6 +3657,17 @@ static int btrfs_cleanup_transaction(struct btrfs_root *root)
return 0;
}
static int btree_writepage_io_failed_hook(struct bio *bio, struct page *page,
u64 start, u64 end,
struct extent_state *state)
{
struct super_block *sb = page->mapping->host->i_sb;
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
btrfs_error(fs_info, -EIO,
"Error occured while writing out btree at %llu", start);
return -EIO;
}
static struct extent_io_ops btree_extent_io_ops = {
.write_cache_pages_lock_hook = btree_lock_page_hook,
.readpage_end_io_hook = btree_readpage_end_io_hook,
......@@ -3565,4 +3675,5 @@ static struct extent_io_ops btree_extent_io_ops = {
.submit_bio_hook = btree_submit_bio_hook,
/* note we're sharing with inode.c for the merge bio hook */
.merge_bio_hook = btrfs_merge_bio_hook,
.writepage_io_failed_hook = btree_writepage_io_failed_hook,
};
fs/btrfs/disk-io.h
浏览文件 @ 1d4284bd
......@@ -44,8 +44,8 @@ int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr, u32 blocksize,
int mirror_num, struct extent_buffer **eb);
struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
u64 bytenr, u32 blocksize);
int clean_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf);
void clean_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf);
int open_ctree(struct super_block *sb,
struct btrfs_fs_devices *fs_devices,
char *options);
......@@ -64,7 +64,7 @@ struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info);
void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid);
int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
......@@ -85,6 +85,10 @@ int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_add_log_tree(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_cleanup_transaction(struct btrfs_root *root);
void btrfs_cleanup_one_transaction(struct btrfs_transaction *trans,
struct btrfs_root *root);
void btrfs_abort_devices(struct btrfs_root *root);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
void btrfs_init_lockdep(void);
......
fs/btrfs/export.c
浏览文件 @ 1d4284bd
......@@ -193,7 +193,7 @@ static struct dentry *btrfs_get_parent(struct dentry *child)
if (ret < 0)
goto fail;
BUG_ON(ret == 0);
BUG_ON(ret == 0); /* Key with offset of -1 found */
if (path->slots[0] == 0) {
ret = -ENOENT;
goto fail;
......
fs/btrfs/extent-tree.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/extent_io.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/extent_io.h
浏览文件 @ 1d4284bd
......@@ -194,14 +194,13 @@ int try_release_extent_buffer(struct page *page, gfp_t mask);
int try_release_extent_state(struct extent_map_tree *map,
struct extent_io_tree *tree, struct page *page,
gfp_t mask);
int lock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask);
int lock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, struct extent_state **cached, gfp_t mask);
int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask);
int bits, struct extent_state **cached);
int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int unlock_extent_cached(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached, gfp_t mask);
int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int extent_read_full_page(struct extent_io_tree *tree, struct page *page,
get_extent_t *get_extent, int mirror_num);
int __init extent_io_init(void);
......@@ -222,7 +221,7 @@ int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
int bits, int exclusive_bits, u64 *failed_start,
int bits, u64 *failed_start,
struct extent_state **cached_state, gfp_t mask);
int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached_state, gfp_t mask);
......@@ -301,8 +300,8 @@ void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len);
void memset_extent_buffer(struct extent_buffer *eb, char c,
unsigned long start, unsigned long len);
int wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits);
int clear_extent_buffer_dirty(struct extent_buffer *eb);
void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits);
void clear_extent_buffer_dirty(struct extent_buffer *eb);
int set_extent_buffer_dirty(struct extent_buffer *eb);
int set_extent_buffer_uptodate(struct extent_buffer *eb);
int clear_extent_buffer_uptodate(struct extent_buffer *eb);
......
fs/btrfs/file-item.c
浏览文件 @ 1d4284bd
......@@ -59,7 +59,7 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
sizeof(*item));
if (ret < 0)
goto out;
BUG_ON(ret);
BUG_ON(ret); /* Can't happen */
leaf = path->nodes[0];
item = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_file_extent_item);
......@@ -284,6 +284,7 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
struct btrfs_ordered_sum *sums;
struct btrfs_sector_sum *sector_sum;
struct btrfs_csum_item *item;
LIST_HEAD(tmplist);
unsigned long offset;
int ret;
size_t size;
......@@ -358,7 +359,10 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
MAX_ORDERED_SUM_BYTES(root));
sums = kzalloc(btrfs_ordered_sum_size(root, size),
GFP_NOFS);
BUG_ON(!sums);
if (!sums) {
ret = -ENOMEM;
goto fail;
}
sector_sum = sums->sums;
sums->bytenr = start;
......@@ -380,12 +384,19 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
offset += csum_size;
sector_sum++;
}
list_add_tail(&sums->list, list);
list_add_tail(&sums->list, &tmplist);
}
path->slots[0]++;
}
ret = 0;
fail:
while (ret < 0 && !list_empty(&tmplist)) {
sums = list_entry(&tmplist, struct btrfs_ordered_sum, list);
list_del(&sums->list);
kfree(sums);
}
list_splice_tail(&tmplist, list);
btrfs_free_path(path);
return ret;
}
......@@ -420,7 +431,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
offset = page_offset(bvec->bv_page) + bvec->bv_offset;
ordered = btrfs_lookup_ordered_extent(inode, offset);
BUG_ON(!ordered);
BUG_ON(!ordered); /* Logic error */
sums->bytenr = ordered->start;
while (bio_index < bio->bi_vcnt) {
......@@ -439,11 +450,11 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
sums = kzalloc(btrfs_ordered_sum_size(root, bytes_left),
GFP_NOFS);
BUG_ON(!sums);
BUG_ON(!sums); /* -ENOMEM */
sector_sum = sums->sums;
sums->len = bytes_left;
ordered = btrfs_lookup_ordered_extent(inode, offset);
BUG_ON(!ordered);
BUG_ON(!ordered); /* Logic error */
sums->bytenr = ordered->start;
}
......@@ -483,18 +494,17 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
* This calls btrfs_truncate_item with the correct args based on the
* overlap, and fixes up the key as required.
*/
static noinline int truncate_one_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_key *key,
u64 bytenr, u64 len)
static noinline void truncate_one_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_key *key,
u64 bytenr, u64 len)
{
struct extent_buffer *leaf;
u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
u64 csum_end;
u64 end_byte = bytenr + len;
u32 blocksize_bits = root->fs_info->sb->s_blocksize_bits;
int ret;
leaf = path->nodes[0];
csum_end = btrfs_item_size_nr(leaf, path->slots[0]) / csum_size;
......@@ -510,7 +520,7 @@ static noinline int truncate_one_csum(struct btrfs_trans_handle *trans,
*/
u32 new_size = (bytenr - key->offset) >> blocksize_bits;
new_size *= csum_size;
ret = btrfs_truncate_item(trans, root, path, new_size, 1);
btrfs_truncate_item(trans, root, path, new_size, 1);
} else if (key->offset >= bytenr && csum_end > end_byte &&
end_byte > key->offset) {
/*
......@@ -522,15 +532,13 @@ static noinline int truncate_one_csum(struct btrfs_trans_handle *trans,
u32 new_size = (csum_end - end_byte) >> blocksize_bits;
new_size *= csum_size;
ret = btrfs_truncate_item(trans, root, path, new_size, 0);
btrfs_truncate_item(trans, root, path, new_size, 0);
key->offset = end_byte;
ret = btrfs_set_item_key_safe(trans, root, path, key);
BUG_ON(ret);
btrfs_set_item_key_safe(trans, root, path, key);
} else {
BUG();
}
return 0;
}
/*
......@@ -635,13 +643,14 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
* item changed size or key
*/
ret = btrfs_split_item(trans, root, path, &key, offset);
BUG_ON(ret && ret != -EAGAIN);
if (ret && ret != -EAGAIN) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
key.offset = end_byte - 1;
} else {
ret = truncate_one_csum(trans, root, path,
&key, bytenr, len);
BUG_ON(ret);
truncate_one_csum(trans, root, path, &key, bytenr, len);
if (key.offset < bytenr)
break;
}
......@@ -772,7 +781,7 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
if (diff != csum_size)
goto insert;
ret = btrfs_extend_item(trans, root, path, diff);
btrfs_extend_item(trans, root, path, diff);
goto csum;
}
......
fs/btrfs/file.c
浏览文件 @ 1d4284bd
......@@ -452,7 +452,7 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
split = alloc_extent_map();
if (!split2)
split2 = alloc_extent_map();
BUG_ON(!split || !split2);
BUG_ON(!split || !split2); /* -ENOMEM */
write_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, start, len);
......@@ -494,7 +494,7 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
split->flags = flags;
split->compress_type = em->compress_type;
ret = add_extent_mapping(em_tree, split);
BUG_ON(ret);
BUG_ON(ret); /* Logic error */
free_extent_map(split);
split = split2;
split2 = NULL;
......@@ -520,7 +520,7 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
}
ret = add_extent_mapping(em_tree, split);
BUG_ON(ret);
BUG_ON(ret); /* Logic error */
free_extent_map(split);
split = NULL;
}
......@@ -679,7 +679,7 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode,
root->root_key.objectid,
new_key.objectid,
start - extent_offset, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
*hint_byte = disk_bytenr;
}
key.offset = start;
......@@ -754,7 +754,7 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode,
root->root_key.objectid,
key.objectid, key.offset -
extent_offset, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
inode_sub_bytes(inode,
extent_end - key.offset);
*hint_byte = disk_bytenr;
......@@ -770,7 +770,10 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode,
ret = btrfs_del_items(trans, root, path, del_slot,
del_nr);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
del_nr = 0;
del_slot = 0;
......@@ -782,11 +785,13 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode,
BUG_ON(1);
}
if (del_nr > 0) {
if (!ret && del_nr > 0) {
ret = btrfs_del_items(trans, root, path, del_slot, del_nr);
BUG_ON(ret);
if (ret)
btrfs_abort_transaction(trans, root, ret);
}
out:
btrfs_free_path(path);
return ret;
}
......@@ -944,7 +949,10 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
btrfs_release_path(path);
goto again;
}
BUG_ON(ret < 0);
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
leaf = path->nodes[0];
fi = btrfs_item_ptr(leaf, path->slots[0] - 1,
......@@ -963,7 +971,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
ret = btrfs_inc_extent_ref(trans, root, bytenr, num_bytes, 0,
root->root_key.objectid,
ino, orig_offset, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
if (split == start) {
key.offset = start;
......@@ -990,7 +998,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
0, root->root_key.objectid,
ino, orig_offset, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
}
other_start = 0;
other_end = start;
......@@ -1007,7 +1015,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
ret = btrfs_free_extent(trans, root, bytenr, num_bytes,
0, root->root_key.objectid,
ino, orig_offset, 0);
BUG_ON(ret);
BUG_ON(ret); /* -ENOMEM */
}
if (del_nr == 0) {
fi = btrfs_item_ptr(leaf, path->slots[0],
......@@ -1025,7 +1033,10 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
btrfs_mark_buffer_dirty(leaf);
ret = btrfs_del_items(trans, root, path, del_slot, del_nr);
BUG_ON(ret);
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
}
out:
btrfs_free_path(path);
......@@ -1105,8 +1116,7 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
if (start_pos < inode->i_size) {
struct btrfs_ordered_extent *ordered;
lock_extent_bits(&BTRFS_I(inode)->io_tree,
start_pos, last_pos - 1, 0, &cached_state,
GFP_NOFS);
start_pos, last_pos - 1, 0, &cached_state);
ordered = btrfs_lookup_first_ordered_extent(inode,
last_pos - 1);
if (ordered &&
......@@ -1638,7 +1648,7 @@ static long btrfs_fallocate(struct file *file, int mode,
* transaction
*/
lock_extent_bits(&BTRFS_I(inode)->io_tree, alloc_start,
locked_end, 0, &cached_state, GFP_NOFS);
locked_end, 0, &cached_state);
ordered = btrfs_lookup_first_ordered_extent(inode,
alloc_end - 1);
if (ordered &&
......@@ -1667,7 +1677,13 @@ static long btrfs_fallocate(struct file *file, int mode,
em = btrfs_get_extent(inode, NULL, 0, cur_offset,
alloc_end - cur_offset, 0);
BUG_ON(IS_ERR_OR_NULL(em));
if (IS_ERR_OR_NULL(em)) {
if (!em)
ret = -ENOMEM;
else
ret = PTR_ERR(em);
break;
}
last_byte = min(extent_map_end(em), alloc_end);
actual_end = min_t(u64, extent_map_end(em), offset + len);
last_byte = (last_byte + mask) & ~mask;
......@@ -1737,7 +1753,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int origin)
return -ENXIO;
lock_extent_bits(&BTRFS_I(inode)->io_tree, lockstart, lockend, 0,
&cached_state, GFP_NOFS);
&cached_state);
/*
* Delalloc is such a pain. If we have a hole and we have pending
......
fs/btrfs/free-space-cache.c
浏览文件 @ 1d4284bd
......@@ -230,11 +230,13 @@ int btrfs_truncate_free_space_cache(struct btrfs_root *root,
if (ret) {
trans->block_rsv = rsv;
WARN_ON(1);
btrfs_abort_transaction(trans, root, ret);
return ret;
}
ret = btrfs_update_inode(trans, root, inode);
if (ret)
btrfs_abort_transaction(trans, root, ret);
trans->block_rsv = rsv;
return ret;
......@@ -869,7 +871,7 @@ int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
io_ctl_prepare_pages(&io_ctl, inode, 0);
lock_extent_bits(&BTRFS_I(inode)->io_tree, 0, i_size_read(inode) - 1,
0, &cached_state, GFP_NOFS);
0, &cached_state);
node = rb_first(&ctl->free_space_offset);
if (!node && cluster) {
......@@ -1948,14 +1950,14 @@ int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
*/
ret = btrfs_add_free_space(block_group, old_start,
offset - old_start);
WARN_ON(ret);
WARN_ON(ret); /* -ENOMEM */
goto out;
}
ret = remove_from_bitmap(ctl, info, &offset, &bytes);
if (ret == -EAGAIN)
goto again;
BUG_ON(ret);
BUG_ON(ret); /* logic error */
out_lock:
spin_unlock(&ctl->tree_lock);
out:
......@@ -2346,7 +2348,7 @@ static int btrfs_bitmap_cluster(struct btrfs_block_group_cache *block_group,
rb_erase(&entry->offset_index, &ctl->free_space_offset);
ret = tree_insert_offset(&cluster->root, entry->offset,
&entry->offset_index, 1);
BUG_ON(ret);
BUG_ON(ret); /* -EEXIST; Logic error */
trace_btrfs_setup_cluster(block_group, cluster,
total_found * block_group->sectorsize, 1);
......@@ -2439,7 +2441,7 @@ setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
ret = tree_insert_offset(&cluster->root, entry->offset,
&entry->offset_index, 0);
total_size += entry->bytes;
BUG_ON(ret);
BUG_ON(ret); /* -EEXIST; Logic error */
} while (node && entry != last);
cluster->max_size = max_extent;
......@@ -2830,6 +2832,7 @@ u64 btrfs_find_ino_for_alloc(struct btrfs_root *fs_root)
int ret;
ret = search_bitmap(ctl, entry, &offset, &count);
/* Logic error; Should be empty if it can't find anything */
BUG_ON(ret);
ino = offset;
......
fs/btrfs/inode-item.c
浏览文件 @ 1d4284bd
......@@ -129,13 +129,14 @@ int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
item_start = btrfs_item_ptr_offset(leaf, path->slots[0]);
memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
item_size - (ptr + sub_item_len - item_start));
ret = btrfs_truncate_item(trans, root, path,
btrfs_truncate_item(trans, root, path,
item_size - sub_item_len, 1);
out:
btrfs_free_path(path);
return ret;
}
/* Will return 0, -ENOMEM, -EMLINK, or -EEXIST or anything from the CoW path */
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
......@@ -166,7 +167,7 @@ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
goto out;
old_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
ret = btrfs_extend_item(trans, root, path, ins_len);
btrfs_extend_item(trans, root, path, ins_len);
ref = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_ref);
ref = (struct btrfs_inode_ref *)((unsigned long)ref + old_size);
......
fs/btrfs/inode-map.c
浏览文件 @ 1d4284bd
......@@ -178,7 +178,7 @@ static void start_caching(struct btrfs_root *root)
tsk = kthread_run(caching_kthread, root, "btrfs-ino-cache-%llu\n",
root->root_key.objectid);
BUG_ON(IS_ERR(tsk));
BUG_ON(IS_ERR(tsk)); /* -ENOMEM */
}
int btrfs_find_free_ino(struct btrfs_root *root, u64 *objectid)
......@@ -271,7 +271,7 @@ void btrfs_unpin_free_ino(struct btrfs_root *root)
break;
info = rb_entry(n, struct btrfs_free_space, offset_index);
BUG_ON(info->bitmap);
BUG_ON(info->bitmap); /* Logic error */
if (info->offset > root->cache_progress)
goto free;
......@@ -443,13 +443,13 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
trans->bytes_reserved, 1);
again:
inode = lookup_free_ino_inode(root, path);
if (IS_ERR(inode) && PTR_ERR(inode) != -ENOENT) {
if (IS_ERR(inode) && (PTR_ERR(inode) != -ENOENT || retry)) {
ret = PTR_ERR(inode);
goto out_release;
}
if (IS_ERR(inode)) {
BUG_ON(retry);
BUG_ON(retry); /* Logic error */
retry = true;
ret = create_free_ino_inode(root, trans, path);
......@@ -460,12 +460,17 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
BTRFS_I(inode)->generation = 0;
ret = btrfs_update_inode(trans, root, inode);
WARN_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto out_put;
}
if (i_size_read(inode) > 0) {
ret = btrfs_truncate_free_space_cache(root, trans, path, inode);
if (ret)
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto out_put;
}
}
spin_lock(&root->cache_lock);
......@@ -532,7 +537,7 @@ static int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid)
ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
if (ret < 0)
goto error;
BUG_ON(ret == 0);
BUG_ON(ret == 0); /* Corruption */
if (path->slots[0] > 0) {
slot = path->slots[0] - 1;
l = path->nodes[0];
......
fs/btrfs/inode.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/ioctl.c
浏览文件 @ 1d4284bd
......@@ -425,22 +425,37 @@ static noinline int create_subvol(struct btrfs_root *root,
key.offset = (u64)-1;
new_root = btrfs_read_fs_root_no_name(root->fs_info, &key);
BUG_ON(IS_ERR(new_root));
if (IS_ERR(new_root)) {
btrfs_abort_transaction(trans, root, PTR_ERR(new_root));
ret = PTR_ERR(new_root);
goto fail;
}
btrfs_record_root_in_trans(trans, new_root);
ret = btrfs_create_subvol_root(trans, new_root, new_dirid);
if (ret) {
/* We potentially lose an unused inode item here */
btrfs_abort_transaction(trans, root, ret);
goto fail;
}
/*
* insert the directory item
*/
ret = btrfs_set_inode_index(dir, &index);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto fail;
}
ret = btrfs_insert_dir_item(trans, root,
name, namelen, dir, &key,
BTRFS_FT_DIR, index);
if (ret)
if (ret) {
btrfs_abort_transaction(trans, root, ret);
goto fail;
}
btrfs_i_size_write(dir, dir->i_size + namelen * 2);
ret = btrfs_update_inode(trans, root, dir);
......@@ -797,9 +812,9 @@ static int should_defrag_range(struct inode *inode, u64 start, u64 len,
if (!em) {
/* get the big lock and read metadata off disk */
lock_extent(io_tree, start, start + len - 1, GFP_NOFS);
lock_extent(io_tree, start, start + len - 1);
em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
unlock_extent(io_tree, start, start + len - 1, GFP_NOFS);
unlock_extent(io_tree, start, start + len - 1);
if (IS_ERR(em))
return 0;
......@@ -887,10 +902,10 @@ static int cluster_pages_for_defrag(struct inode *inode,
page_start = page_offset(page);
page_end = page_start + PAGE_CACHE_SIZE - 1;
while (1) {
lock_extent(tree, page_start, page_end, GFP_NOFS);
lock_extent(tree, page_start, page_end);
ordered = btrfs_lookup_ordered_extent(inode,
page_start);
unlock_extent(tree, page_start, page_end, GFP_NOFS);
unlock_extent(tree, page_start, page_end);
if (!ordered)
break;
......@@ -946,8 +961,7 @@ static int cluster_pages_for_defrag(struct inode *inode,
page_end = page_offset(pages[i_done - 1]) + PAGE_CACHE_SIZE;
lock_extent_bits(&BTRFS_I(inode)->io_tree,
page_start, page_end - 1, 0, &cached_state,
GFP_NOFS);
page_start, page_end - 1, 0, &cached_state);
clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start,
page_end - 1, EXTENT_DIRTY | EXTENT_DELALLOC |
EXTENT_DO_ACCOUNTING, 0, 0, &cached_state,
......@@ -1966,7 +1980,11 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
dest->root_key.objectid,
dentry->d_name.name,
dentry->d_name.len);
BUG_ON(ret);
if (ret) {
err = ret;
btrfs_abort_transaction(trans, root, ret);
goto out_end_trans;
}
btrfs_record_root_in_trans(trans, dest);
......@@ -1979,11 +1997,16 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
ret = btrfs_insert_orphan_item(trans,
root->fs_info->tree_root,
dest->root_key.objectid);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root, ret);
err = ret;
goto out_end_trans;
}
}
out_end_trans:
ret = btrfs_end_transaction(trans, root);
BUG_ON(ret);
if (ret && !err)
err = ret;
inode->i_flags |= S_DEAD;
out_up_write:
up_write(&root->fs_info->subvol_sem);
......@@ -2326,13 +2349,13 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
another, and lock file content */
while (1) {
struct btrfs_ordered_extent *ordered;
lock_extent(&BTRFS_I(src)->io_tree, off, off+len, GFP_NOFS);
lock_extent(&BTRFS_I(src)->io_tree, off, off+len);
ordered = btrfs_lookup_first_ordered_extent(src, off+len);
if (!ordered &&
!test_range_bit(&BTRFS_I(src)->io_tree, off, off+len,
EXTENT_DELALLOC, 0, NULL))
break;
unlock_extent(&BTRFS_I(src)->io_tree, off, off+len, GFP_NOFS);
unlock_extent(&BTRFS_I(src)->io_tree, off, off+len);
if (ordered)
btrfs_put_ordered_extent(ordered);
btrfs_wait_ordered_range(src, off, len);
......@@ -2447,11 +2470,21 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
new_key.offset,
new_key.offset + datal,
&hint_byte, 1);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root,
ret);
btrfs_end_transaction(trans, root);
goto out;
}
ret = btrfs_insert_empty_item(trans, root, path,
&new_key, size);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root,
ret);
btrfs_end_transaction(trans, root);
goto out;
}
leaf = path->nodes[0];
slot = path->slots[0];
......@@ -2478,7 +2511,15 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
btrfs_ino(inode),
new_key.offset - datao,
0);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans,
root,
ret);
btrfs_end_transaction(trans,
root);
goto out;
}
}
} else if (type == BTRFS_FILE_EXTENT_INLINE) {
u64 skip = 0;
......@@ -2503,11 +2544,21 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
new_key.offset,
new_key.offset + datal,
&hint_byte, 1);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root,
ret);
btrfs_end_transaction(trans, root);
goto out;
}
ret = btrfs_insert_empty_item(trans, root, path,
&new_key, size);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, root,
ret);
btrfs_end_transaction(trans, root);
goto out;
}
if (skip) {
u32 start =
......@@ -2541,8 +2592,12 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
btrfs_i_size_write(inode, endoff);
ret = btrfs_update_inode(trans, root, inode);
BUG_ON(ret);
btrfs_end_transaction(trans, root);
if (ret) {
btrfs_abort_transaction(trans, root, ret);
btrfs_end_transaction(trans, root);
goto out;
}
ret = btrfs_end_transaction(trans, root);
}
next:
btrfs_release_path(path);
......@@ -2551,7 +2606,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
ret = 0;
out:
btrfs_release_path(path);
unlock_extent(&BTRFS_I(src)->io_tree, off, off+len, GFP_NOFS);
unlock_extent(&BTRFS_I(src)->io_tree, off, off+len);
out_unlock:
mutex_unlock(&src->i_mutex);
mutex_unlock(&inode->i_mutex);
......
fs/btrfs/locking.c
浏览文件 @ 1d4284bd
......@@ -208,7 +208,7 @@ void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb)
* take a spinning write lock. This will wait for both
* blocking readers or writers
*/
int btrfs_tree_lock(struct extent_buffer *eb)
void btrfs_tree_lock(struct extent_buffer *eb)
{
again:
wait_event(eb->read_lock_wq, atomic_read(&eb->blocking_readers) == 0);
......@@ -230,13 +230,12 @@ int btrfs_tree_lock(struct extent_buffer *eb)
atomic_inc(&eb->spinning_writers);
atomic_inc(&eb->write_locks);
eb->lock_owner = current->pid;
return 0;
}
/*
* drop a spinning or a blocking write lock.
*/
int btrfs_tree_unlock(struct extent_buffer *eb)
void btrfs_tree_unlock(struct extent_buffer *eb)
{
int blockers = atomic_read(&eb->blocking_writers);
......@@ -255,7 +254,6 @@ int btrfs_tree_unlock(struct extent_buffer *eb)
atomic_dec(&eb->spinning_writers);
write_unlock(&eb->lock);
}
return 0;
}
void btrfs_assert_tree_locked(struct extent_buffer *eb)
......
fs/btrfs/locking.h
浏览文件 @ 1d4284bd
......@@ -24,8 +24,8 @@
#define BTRFS_WRITE_LOCK_BLOCKING 3
#define BTRFS_READ_LOCK_BLOCKING 4
int btrfs_tree_lock(struct extent_buffer *eb);
int btrfs_tree_unlock(struct extent_buffer *eb);
void btrfs_tree_lock(struct extent_buffer *eb);
void btrfs_tree_unlock(struct extent_buffer *eb);
int btrfs_try_spin_lock(struct extent_buffer *eb);
void btrfs_tree_read_lock(struct extent_buffer *eb);
......
fs/btrfs/ordered-data.c
浏览文件 @ 1d4284bd
......@@ -59,6 +59,14 @@ static struct rb_node *tree_insert(struct rb_root *root, u64 file_offset,
return NULL;
}
static void ordered_data_tree_panic(struct inode *inode, int errno,
u64 offset)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
btrfs_panic(fs_info, errno, "Inconsistency in ordered tree at offset "
"%llu\n", (unsigned long long)offset);
}
/*
* look for a given offset in the tree, and if it can't be found return the
* first lesser offset
......@@ -207,7 +215,8 @@ static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
spin_lock(&tree->lock);
node = tree_insert(&tree->tree, file_offset,
&entry->rb_node);
BUG_ON(node);
if (node)
ordered_data_tree_panic(inode, -EEXIST, file_offset);
spin_unlock(&tree->lock);
spin_lock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
......@@ -215,7 +224,6 @@ static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
&BTRFS_I(inode)->root->fs_info->ordered_extents);
spin_unlock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
BUG_ON(node);
return 0;
}
......@@ -249,9 +257,9 @@ int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset,
* when an ordered extent is finished. If the list covers more than one
* ordered extent, it is split across multiples.
*/
int btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum)
void btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum)
{
struct btrfs_ordered_inode_tree *tree;
......@@ -259,7 +267,6 @@ int btrfs_add_ordered_sum(struct inode *inode,
spin_lock(&tree->lock);
list_add_tail(&sum->list, &entry->list);
spin_unlock(&tree->lock);
return 0;
}
/*
......@@ -384,7 +391,7 @@ int btrfs_dec_test_ordered_pending(struct inode *inode,
* used to drop a reference on an ordered extent. This will free
* the extent if the last reference is dropped
*/
int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
{
struct list_head *cur;
struct btrfs_ordered_sum *sum;
......@@ -400,7 +407,6 @@ int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
}
kfree(entry);
}
return 0;
}
/*
......@@ -408,8 +414,8 @@ int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
* and you must wake_up entry->wait. You must hold the tree lock
* while you call this function.
*/
static int __btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
static void __btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
{
struct btrfs_ordered_inode_tree *tree;
struct btrfs_root *root = BTRFS_I(inode)->root;
......@@ -436,35 +442,30 @@ static int __btrfs_remove_ordered_extent(struct inode *inode,
list_del_init(&BTRFS_I(inode)->ordered_operations);
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
/*
* remove an ordered extent from the tree. No references are dropped
* but any waiters are woken.
*/
int btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
void btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
{
struct btrfs_ordered_inode_tree *tree;
int ret;
tree = &BTRFS_I(inode)->ordered_tree;
spin_lock(&tree->lock);
ret = __btrfs_remove_ordered_extent(inode, entry);
__btrfs_remove_ordered_extent(inode, entry);
spin_unlock(&tree->lock);
wake_up(&entry->wait);
return ret;
}
/*
* wait for all the ordered extents in a root. This is done when balancing
* space between drives.
*/
int btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput)
void btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput)
{
struct list_head splice;
struct list_head *cur;
......@@ -512,7 +513,6 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root,
spin_lock(&root->fs_info->ordered_extent_lock);
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
/*
......@@ -525,7 +525,7 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root,
* extra check to make sure the ordered operation list really is empty
* before we return
*/
int btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
void btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
{
struct btrfs_inode *btrfs_inode;
struct inode *inode;
......@@ -573,8 +573,6 @@ int btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
spin_unlock(&root->fs_info->ordered_extent_lock);
mutex_unlock(&root->fs_info->ordered_operations_mutex);
return 0;
}
/*
......@@ -609,7 +607,7 @@ void btrfs_start_ordered_extent(struct inode *inode,
/*
* Used to wait on ordered extents across a large range of bytes.
*/
int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
void btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
{
u64 end;
u64 orig_end;
......@@ -664,7 +662,6 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
schedule_timeout(1);
goto again;
}
return 0;
}
/*
......@@ -948,9 +945,8 @@ int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
* If trans is not null, we'll do a friendly check for a transaction that
* is already flushing things and force the IO down ourselves.
*/
int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode)
void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode)
{
u64 last_mod;
......@@ -961,7 +957,7 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
* commit, we can safely return without doing anything
*/
if (last_mod < root->fs_info->last_trans_committed)
return 0;
return;
/*
* the transaction is already committing. Just start the IO and
......@@ -969,7 +965,7 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
*/
if (trans && root->fs_info->running_transaction->blocked) {
btrfs_wait_ordered_range(inode, 0, (u64)-1);
return 0;
return;
}
spin_lock(&root->fs_info->ordered_extent_lock);
......@@ -978,6 +974,4 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
&root->fs_info->ordered_operations);
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
fs/btrfs/ordered-data.h
浏览文件 @ 1d4284bd
......@@ -138,8 +138,8 @@ btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t)
t->last = NULL;
}
int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
int btrfs_remove_ordered_extent(struct inode *inode,
void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
void btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry);
int btrfs_dec_test_ordered_pending(struct inode *inode,
struct btrfs_ordered_extent **cached,
......@@ -154,14 +154,14 @@ int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset,
u64 start, u64 len, u64 disk_len,
int type, int compress_type);
int btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum);
void btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum);
struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct inode *inode,
u64 file_offset);
void btrfs_start_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry, int wait);
int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
void btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
struct btrfs_ordered_extent *
btrfs_lookup_first_ordered_extent(struct inode * inode, u64 file_offset);
struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
......@@ -170,10 +170,10 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
struct btrfs_ordered_extent *ordered);
int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u32 *sum);
int btrfs_run_ordered_operations(struct btrfs_root *root, int wait);
int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
int btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput);
void btrfs_run_ordered_operations(struct btrfs_root *root, int wait);
void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
void btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput);
#endif
fs/btrfs/orphan.c
浏览文件 @ 1d4284bd
......@@ -58,7 +58,7 @@ int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
if (ret < 0)
goto out;
if (ret) {
if (ret) { /* JDM: Really? */
ret = -ENOENT;
goto out;
}
......
fs/btrfs/relocation.c
浏览文件 @ 1d4284bd
......@@ -326,6 +326,19 @@ static struct rb_node *tree_search(struct rb_root *root, u64 bytenr)
return NULL;
}
void backref_tree_panic(struct rb_node *rb_node, int errno,
u64 bytenr)
{
struct btrfs_fs_info *fs_info = NULL;
struct backref_node *bnode = rb_entry(rb_node, struct backref_node,
rb_node);
if (bnode->root)
fs_info = bnode->root->fs_info;
btrfs_panic(fs_info, errno, "Inconsistency in backref cache "
"found at offset %llu\n", (unsigned long long)bytenr);
}
/*
* walk up backref nodes until reach node presents tree root
*/
......@@ -452,7 +465,8 @@ static void update_backref_node(struct backref_cache *cache,
rb_erase(&node->rb_node, &cache->rb_root);
node->bytenr = bytenr;
rb_node = tree_insert(&cache->rb_root, node->bytenr, &node->rb_node);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST, bytenr);
}
/*
......@@ -999,7 +1013,8 @@ struct backref_node *build_backref_tree(struct reloc_control *rc,
if (!cowonly) {
rb_node = tree_insert(&cache->rb_root, node->bytenr,
&node->rb_node);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST, node->bytenr);
list_add_tail(&node->lower, &cache->leaves);
}
......@@ -1034,7 +1049,9 @@ struct backref_node *build_backref_tree(struct reloc_control *rc,
if (!cowonly) {
rb_node = tree_insert(&cache->rb_root, upper->bytenr,
&upper->rb_node);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST,
upper->bytenr);
}
list_add_tail(&edge->list[UPPER], &upper->lower);
......@@ -1180,7 +1197,8 @@ static int clone_backref_node(struct btrfs_trans_handle *trans,
rb_node = tree_insert(&cache->rb_root, new_node->bytenr,
&new_node->rb_node);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST, new_node->bytenr);
if (!new_node->lowest) {
list_for_each_entry(new_edge, &new_node->lower, list[UPPER]) {
......@@ -1203,14 +1221,15 @@ static int clone_backref_node(struct btrfs_trans_handle *trans,
/*
* helper to add 'address of tree root -> reloc tree' mapping
*/
static int __add_reloc_root(struct btrfs_root *root)
static int __must_check __add_reloc_root(struct btrfs_root *root)
{
struct rb_node *rb_node;
struct mapping_node *node;
struct reloc_control *rc = root->fs_info->reloc_ctl;
node = kmalloc(sizeof(*node), GFP_NOFS);
BUG_ON(!node);
if (!node)
return -ENOMEM;
node->bytenr = root->node->start;
node->data = root;
......@@ -1219,7 +1238,12 @@ static int __add_reloc_root(struct btrfs_root *root)
rb_node = tree_insert(&rc->reloc_root_tree.rb_root,
node->bytenr, &node->rb_node);
spin_unlock(&rc->reloc_root_tree.lock);
BUG_ON(rb_node);
if (rb_node) {
kfree(node);
btrfs_panic(root->fs_info, -EEXIST, "Duplicate root found "
"for start=%llu while inserting into relocation "
"tree\n");
}
list_add_tail(&root->root_list, &rc->reloc_roots);
return 0;
......@@ -1252,7 +1276,8 @@ static int __update_reloc_root(struct btrfs_root *root, int del)
rb_node = tree_insert(&rc->reloc_root_tree.rb_root,
node->bytenr, &node->rb_node);
spin_unlock(&rc->reloc_root_tree.lock);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST, node->bytenr);
} else {
list_del_init(&root->root_list);
kfree(node);
......@@ -1334,6 +1359,7 @@ int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
struct btrfs_root *reloc_root;
struct reloc_control *rc = root->fs_info->reloc_ctl;
int clear_rsv = 0;
int ret;
if (root->reloc_root) {
reloc_root = root->reloc_root;
......@@ -1353,7 +1379,8 @@ int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
if (clear_rsv)
trans->block_rsv = NULL;
__add_reloc_root(reloc_root);
ret = __add_reloc_root(reloc_root);
BUG_ON(ret < 0);
root->reloc_root = reloc_root;
return 0;
}
......@@ -1577,15 +1604,14 @@ int replace_file_extents(struct btrfs_trans_handle *trans,
WARN_ON(!IS_ALIGNED(end, root->sectorsize));
end--;
ret = try_lock_extent(&BTRFS_I(inode)->io_tree,
key.offset, end,
GFP_NOFS);
key.offset, end);
if (!ret)
continue;
btrfs_drop_extent_cache(inode, key.offset, end,
1);
unlock_extent(&BTRFS_I(inode)->io_tree,
key.offset, end, GFP_NOFS);
key.offset, end);
}
}
......@@ -1956,9 +1982,9 @@ static int invalidate_extent_cache(struct btrfs_root *root,
}
/* the lock_extent waits for readpage to complete */
lock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
lock_extent(&BTRFS_I(inode)->io_tree, start, end);
btrfs_drop_extent_cache(inode, start, end, 1);
unlock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
unlock_extent(&BTRFS_I(inode)->io_tree, start, end);
}
return 0;
}
......@@ -2246,7 +2272,8 @@ int merge_reloc_roots(struct reloc_control *rc)
} else {
list_del_init(&reloc_root->root_list);
}
btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0, 1);
ret = btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0, 1);
BUG_ON(ret < 0);
}
if (found) {
......@@ -2862,12 +2889,12 @@ int prealloc_file_extent_cluster(struct inode *inode,
else
end = cluster->end - offset;
lock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
lock_extent(&BTRFS_I(inode)->io_tree, start, end);
num_bytes = end + 1 - start;
ret = btrfs_prealloc_file_range(inode, 0, start,
num_bytes, num_bytes,
end + 1, &alloc_hint);
unlock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
unlock_extent(&BTRFS_I(inode)->io_tree, start, end);
if (ret)
break;
nr++;
......@@ -2899,7 +2926,7 @@ int setup_extent_mapping(struct inode *inode, u64 start, u64 end,
em->bdev = root->fs_info->fs_devices->latest_bdev;
set_bit(EXTENT_FLAG_PINNED, &em->flags);
lock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
lock_extent(&BTRFS_I(inode)->io_tree, start, end);
while (1) {
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
......@@ -2910,7 +2937,7 @@ int setup_extent_mapping(struct inode *inode, u64 start, u64 end,
}
btrfs_drop_extent_cache(inode, start, end, 0);
}
unlock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
unlock_extent(&BTRFS_I(inode)->io_tree, start, end);
return ret;
}
......@@ -2990,8 +3017,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
page_start = (u64)page->index << PAGE_CACHE_SHIFT;
page_end = page_start + PAGE_CACHE_SIZE - 1;
lock_extent(&BTRFS_I(inode)->io_tree,
page_start, page_end, GFP_NOFS);
lock_extent(&BTRFS_I(inode)->io_tree, page_start, page_end);
set_page_extent_mapped(page);
......@@ -3007,7 +3033,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
set_page_dirty(page);
unlock_extent(&BTRFS_I(inode)->io_tree,
page_start, page_end, GFP_NOFS);
page_start, page_end);
unlock_page(page);
page_cache_release(page);
......@@ -3154,7 +3180,8 @@ static int add_tree_block(struct reloc_control *rc,
block->key_ready = 0;
rb_node = tree_insert(blocks, block->bytenr, &block->rb_node);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST, block->bytenr);
return 0;
}
......@@ -3426,7 +3453,9 @@ static int find_data_references(struct reloc_control *rc,
block->key_ready = 1;
rb_node = tree_insert(blocks, block->bytenr,
&block->rb_node);
BUG_ON(rb_node);
if (rb_node)
backref_tree_panic(rb_node, -EEXIST,
block->bytenr);
}
if (counted)
added = 1;
......@@ -4073,10 +4102,11 @@ int btrfs_relocate_block_group(struct btrfs_root *extent_root, u64 group_start)
static noinline_for_stack int mark_garbage_root(struct btrfs_root *root)
{
struct btrfs_trans_handle *trans;
int ret;
int ret, err;
trans = btrfs_start_transaction(root->fs_info->tree_root, 0);
BUG_ON(IS_ERR(trans));
if (IS_ERR(trans))
return PTR_ERR(trans);
memset(&root->root_item.drop_progress, 0,
sizeof(root->root_item.drop_progress));
......@@ -4084,11 +4114,11 @@ static noinline_for_stack int mark_garbage_root(struct btrfs_root *root)
btrfs_set_root_refs(&root->root_item, 0);
ret = btrfs_update_root(trans, root->fs_info->tree_root,
&root->root_key, &root->root_item);
BUG_ON(ret);
ret = btrfs_end_transaction(trans, root->fs_info->tree_root);
BUG_ON(ret);
return 0;
err = btrfs_end_transaction(trans, root->fs_info->tree_root);
if (err)
return err;
return ret;
}
/*
......@@ -4156,7 +4186,11 @@ int btrfs_recover_relocation(struct btrfs_root *root)
err = ret;
goto out;
}
mark_garbage_root(reloc_root);
ret = mark_garbage_root(reloc_root);
if (ret < 0) {
err = ret;
goto out;
}
}
}
......@@ -4202,13 +4236,19 @@ int btrfs_recover_relocation(struct btrfs_root *root)
fs_root = read_fs_root(root->fs_info,
reloc_root->root_key.offset);
BUG_ON(IS_ERR(fs_root));
if (IS_ERR(fs_root)) {
err = PTR_ERR(fs_root);
goto out_free;
}
__add_reloc_root(reloc_root);
err = __add_reloc_root(reloc_root);
BUG_ON(err < 0); /* -ENOMEM or logic error */
fs_root->reloc_root = reloc_root;
}
btrfs_commit_transaction(trans, rc->extent_root);
err = btrfs_commit_transaction(trans, rc->extent_root);
if (err)
goto out_free;
merge_reloc_roots(rc);
......@@ -4218,7 +4258,7 @@ int btrfs_recover_relocation(struct btrfs_root *root)
if (IS_ERR(trans))
err = PTR_ERR(trans);
else
btrfs_commit_transaction(trans, rc->extent_root);
err = btrfs_commit_transaction(trans, rc->extent_root);
out_free:
kfree(rc);
out:
......@@ -4267,6 +4307,8 @@ int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len)
disk_bytenr = file_pos + BTRFS_I(inode)->index_cnt;
ret = btrfs_lookup_csums_range(root->fs_info->csum_root, disk_bytenr,
disk_bytenr + len - 1, &list, 0);
if (ret)
goto out;
while (!list_empty(&list)) {
sums = list_entry(list.next, struct btrfs_ordered_sum, list);
......@@ -4284,6 +4326,7 @@ int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len)
btrfs_add_ordered_sum(inode, ordered, sums);
}
out:
btrfs_put_ordered_extent(ordered);
return ret;
}
......@@ -4380,7 +4423,7 @@ void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans,
* called after snapshot is created. migrate block reservation
* and create reloc root for the newly created snapshot
*/
void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_pending_snapshot *pending)
{
struct btrfs_root *root = pending->root;
......@@ -4390,7 +4433,7 @@ void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
int ret;
if (!root->reloc_root)
return;
return 0;
rc = root->fs_info->reloc_ctl;
rc->merging_rsv_size += rc->nodes_relocated;
......@@ -4399,18 +4442,21 @@ void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
ret = btrfs_block_rsv_migrate(&pending->block_rsv,
rc->block_rsv,
rc->nodes_relocated);
BUG_ON(ret);
if (ret)
return ret;
}
new_root = pending->snap;
reloc_root = create_reloc_root(trans, root->reloc_root,
new_root->root_key.objectid);
if (IS_ERR(reloc_root))
return PTR_ERR(reloc_root);
__add_reloc_root(reloc_root);
ret = __add_reloc_root(reloc_root);
BUG_ON(ret < 0);
new_root->reloc_root = reloc_root;
if (rc->create_reloc_tree) {
if (rc->create_reloc_tree)
ret = clone_backref_node(trans, rc, root, reloc_root);
BUG_ON(ret);
}
return ret;
}
fs/btrfs/root-tree.c
浏览文件 @ 1d4284bd
......@@ -93,10 +93,14 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
unsigned long ptr;
path = btrfs_alloc_path();
BUG_ON(!path);
if (!path)
return -ENOMEM;
ret = btrfs_search_slot(trans, root, key, path, 0, 1);
if (ret < 0)
if (ret < 0) {
btrfs_abort_transaction(trans, root, ret);
goto out;
}
if (ret != 0) {
btrfs_print_leaf(root, path->nodes[0]);
......@@ -116,13 +120,10 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
return ret;
}
int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_root_item
*item)
int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_key *key, struct btrfs_root_item *item)
{
int ret;
ret = btrfs_insert_item(trans, root, key, item, sizeof(*item));
return ret;
return btrfs_insert_item(trans, root, key, item, sizeof(*item));
}
/*
......@@ -384,6 +385,8 @@ int btrfs_find_root_ref(struct btrfs_root *tree_root,
*
* For a back ref the root_id is the id of the subvol or snapshot and
* ref_id is the id of the tree referencing it.
*
* Will return 0, -ENOMEM, or anything from the CoW path
*/
int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *tree_root,
......@@ -407,7 +410,11 @@ int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
again:
ret = btrfs_insert_empty_item(trans, tree_root, path, &key,
sizeof(*ref) + name_len);
BUG_ON(ret);
if (ret) {
btrfs_abort_transaction(trans, tree_root, ret);
btrfs_free_path(path);
return ret;
}
leaf = path->nodes[0];
ref = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_ref);
......
fs/btrfs/scrub.c
浏览文件 @ 1d4284bd
......@@ -2157,6 +2157,9 @@ static noinline_for_stack int scrub_supers(struct scrub_dev *sdev)
struct btrfs_device *device = sdev->dev;
struct btrfs_root *root = device->dev_root;
if (root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR)
return -EIO;
gen = root->fs_info->last_trans_committed;
for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
......@@ -2317,7 +2320,7 @@ int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end,
return ret;
}
int btrfs_scrub_pause(struct btrfs_root *root)
void btrfs_scrub_pause(struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
......@@ -2332,34 +2335,28 @@ int btrfs_scrub_pause(struct btrfs_root *root)
mutex_lock(&fs_info->scrub_lock);
}
mutex_unlock(&fs_info->scrub_lock);
return 0;
}
int btrfs_scrub_continue(struct btrfs_root *root)
void btrfs_scrub_continue(struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
atomic_dec(&fs_info->scrub_pause_req);
wake_up(&fs_info->scrub_pause_wait);
return 0;
}
int btrfs_scrub_pause_super(struct btrfs_root *root)
void btrfs_scrub_pause_super(struct btrfs_root *root)
{
down_write(&root->fs_info->scrub_super_lock);
return 0;
}
int btrfs_scrub_continue_super(struct btrfs_root *root)
void btrfs_scrub_continue_super(struct btrfs_root *root)
{
up_write(&root->fs_info->scrub_super_lock);
return 0;
}
int btrfs_scrub_cancel(struct btrfs_root *root)
int __btrfs_scrub_cancel(struct btrfs_fs_info *fs_info)
{
struct btrfs_fs_info *fs_info = root->fs_info;
mutex_lock(&fs_info->scrub_lock);
if (!atomic_read(&fs_info->scrubs_running)) {
......@@ -2380,6 +2377,11 @@ int btrfs_scrub_cancel(struct btrfs_root *root)
return 0;
}
int btrfs_scrub_cancel(struct btrfs_root *root)
{
return __btrfs_scrub_cancel(root->fs_info);
}
int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev)
{
struct btrfs_fs_info *fs_info = root->fs_info;
......
fs/btrfs/super.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/transaction.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/transaction.h
浏览文件 @ 1d4284bd
......@@ -43,6 +43,7 @@ struct btrfs_transaction {
wait_queue_head_t commit_wait;
struct list_head pending_snapshots;
struct btrfs_delayed_ref_root delayed_refs;
int aborted;
};
struct btrfs_trans_handle {
......@@ -55,6 +56,7 @@ struct btrfs_trans_handle {
struct btrfs_transaction *transaction;
struct btrfs_block_rsv *block_rsv;
struct btrfs_block_rsv *orig_rsv;
int aborted;
};
struct btrfs_pending_snapshot {
......@@ -114,4 +116,5 @@ int btrfs_wait_marked_extents(struct btrfs_root *root,
struct extent_io_tree *dirty_pages, int mark);
int btrfs_transaction_blocked(struct btrfs_fs_info *info);
int btrfs_transaction_in_commit(struct btrfs_fs_info *info);
void put_transaction(struct btrfs_transaction *transaction);
#endif
fs/btrfs/tree-log.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/tree-log.h
浏览文件 @ 1d4284bd
......@@ -38,7 +38,7 @@ int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
struct inode *inode, u64 dirid);
int btrfs_end_log_trans(struct btrfs_root *root);
void btrfs_end_log_trans(struct btrfs_root *root);
int btrfs_pin_log_trans(struct btrfs_root *root);
int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
......
fs/btrfs/volumes.c
浏览文件 @ 1d4284bd
此差异已折叠。
fs/btrfs/volumes.h
浏览文件 @ 1d4284bd
......@@ -260,12 +260,12 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,
struct btrfs_fs_devices **fs_devices_ret);
int btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
int btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices);
void btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices);
int btrfs_add_device(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_device *device);
int btrfs_rm_device(struct btrfs_root *root, char *device_path);
int btrfs_cleanup_fs_uuids(void);
void btrfs_cleanup_fs_uuids(void);
int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
int btrfs_grow_device(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 new_size);
......
include/trace/events/btrfs.h
浏览文件 @ 1d4284bd
此差异已折叠。
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