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提交 651857a1 编写于 作者: L Linus Torvalds
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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (31 commits)
  ocfs2: implement i_op->permission
  configfs: make configfs_dirent_exists() static
  ocfs2: update file system paths to set atime
  ocfs2: core atime update functions
  ocfs2: Add splice support
  ocfs2: Remove ocfs2_write_should_remove_suid()
  [PATCH] Export should_remove_suid()
  configfs: mutex_lock_nested() fix
  ocfs2: Remove struct ocfs2_journal_handle in favor of handle_t
  ocfs2: remove handle argument to ocfs2_start_trans()
  ocfs2: remove ocfs2_journal_handle journal field
  ocfs2: pass ocfs2_super * into ocfs2_commit_trans()
  ocfs2: remove unused handle argument from ocfs2_meta_lock_full()
  ocfs2: make ocfs2_alloc_handle() static
  ocfs2: remove unused ocfs2_handle_add_lock()
  ocfs2: remove unused ocfs2_handle_add_inode()
  ocfs2: Don't allocate handle early in ocfs2_rename()
  ocfs2: don't use handle for locking in allocation functions
  ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_rename()
  ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_symlink()
  ...
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Showing with 760 addition and 898 deletion
fs/configfs/dir.c
浏览文件 @ 651857a1
......@@ -93,8 +93,8 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
*
* called with parent inode's i_mutex held
*/
int configfs_dirent_exists(struct configfs_dirent *parent_sd,
const unsigned char *new)
static int configfs_dirent_exists(struct configfs_dirent *parent_sd,
const unsigned char *new)
{
struct configfs_dirent * sd;
......@@ -1176,8 +1176,9 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
return;
}
mutex_lock(&configfs_sb->s_root->d_inode->i_mutex);
mutex_lock(&dentry->d_inode->i_mutex);
mutex_lock_nested(&configfs_sb->s_root->d_inode->i_mutex,
I_MUTEX_PARENT);
mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
if (configfs_detach_prep(dentry)) {
printk(KERN_ERR "configfs: Tried to unregister non-empty subsystem!\n");
}
......
fs/ocfs2/alloc.c
浏览文件 @ 651857a1
......@@ -52,14 +52,14 @@ static int ocfs2_extent_contig(struct inode *inode,
u64 blkno);
static int ocfs2_create_new_meta_bhs(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
int wanted,
struct ocfs2_alloc_context *meta_ac,
struct buffer_head *bhs[]);
static int ocfs2_add_branch(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
struct buffer_head *eb_bh,
......@@ -67,14 +67,14 @@ static int ocfs2_add_branch(struct ocfs2_super *osb,
struct ocfs2_alloc_context *meta_ac);
static int ocfs2_shift_tree_depth(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
struct ocfs2_alloc_context *meta_ac,
struct buffer_head **ret_new_eb_bh);
static int ocfs2_do_insert_extent(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
u64 blkno,
......@@ -152,7 +152,7 @@ int ocfs2_num_free_extents(struct ocfs2_super *osb,
* l_count for you
*/
static int ocfs2_create_new_meta_bhs(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
int wanted,
struct ocfs2_alloc_context *meta_ac,
......@@ -253,7 +253,7 @@ static int ocfs2_create_new_meta_bhs(struct ocfs2_super *osb,
* contain a single record with e_clusters == 0.
*/
static int ocfs2_add_branch(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
struct buffer_head *eb_bh,
......@@ -418,7 +418,7 @@ static int ocfs2_add_branch(struct ocfs2_super *osb,
* after this call.
*/
static int ocfs2_shift_tree_depth(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
struct ocfs2_alloc_context *meta_ac,
......@@ -520,7 +520,7 @@ static int ocfs2_shift_tree_depth(struct ocfs2_super *osb,
* down.
*/
static int ocfs2_do_insert_extent(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
u64 start_blk,
......@@ -809,7 +809,7 @@ static int ocfs2_find_branch_target(struct ocfs2_super *osb,
/* the caller needs to update fe->i_clusters */
int ocfs2_insert_extent(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
u64 start_blk,
......@@ -951,7 +951,7 @@ static int ocfs2_truncate_log_can_coalesce(struct ocfs2_truncate_log *tl,
}
static int ocfs2_truncate_log_append(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
u64 start_blk,
unsigned int num_clusters)
{
......@@ -1034,7 +1034,7 @@ static int ocfs2_truncate_log_append(struct ocfs2_super *osb,
}
static int ocfs2_replay_truncate_records(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *data_alloc_inode,
struct buffer_head *data_alloc_bh)
{
......@@ -1113,7 +1113,7 @@ static int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
{
int status;
unsigned int num_to_flush;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle;
struct inode *tl_inode = osb->osb_tl_inode;
struct inode *data_alloc_inode = NULL;
struct buffer_head *tl_bh = osb->osb_tl_bh;
......@@ -1130,7 +1130,7 @@ static int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
if (!OCFS2_IS_VALID_DINODE(di)) {
OCFS2_RO_ON_INVALID_DINODE(osb->sb, di);
status = -EIO;
goto bail;
goto out;
}
num_to_flush = le16_to_cpu(tl->tl_used);
......@@ -1138,14 +1138,7 @@ static int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
num_to_flush, (unsigned long long)OCFS2_I(tl_inode)->ip_blkno);
if (!num_to_flush) {
status = 0;
goto bail;
}
handle = ocfs2_alloc_handle(osb);
if (!handle) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
goto out;
}
data_alloc_inode = ocfs2_get_system_file_inode(osb,
......@@ -1154,41 +1147,40 @@ static int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
if (!data_alloc_inode) {
status = -EINVAL;
mlog(ML_ERROR, "Could not get bitmap inode!\n");
goto bail;
goto out;
}
ocfs2_handle_add_inode(handle, data_alloc_inode);
status = ocfs2_meta_lock(data_alloc_inode, handle, &data_alloc_bh, 1);
mutex_lock(&data_alloc_inode->i_mutex);
status = ocfs2_meta_lock(data_alloc_inode, &data_alloc_bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
goto out_mutex;
}
handle = ocfs2_start_trans(osb, handle, OCFS2_TRUNCATE_LOG_UPDATE);
handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
mlog_errno(status);
goto bail;
goto out_unlock;
}
status = ocfs2_replay_truncate_records(osb, handle, data_alloc_inode,
data_alloc_bh);
if (status < 0) {
if (status < 0)
mlog_errno(status);
goto bail;
}
bail:
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
if (data_alloc_inode)
iput(data_alloc_inode);
out_unlock:
brelse(data_alloc_bh);
ocfs2_meta_unlock(data_alloc_inode, 1);
if (data_alloc_bh)
brelse(data_alloc_bh);
out_mutex:
mutex_unlock(&data_alloc_inode->i_mutex);
iput(data_alloc_inode);
out:
mlog_exit(status);
return status;
}
......@@ -1347,7 +1339,7 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
int i;
unsigned int clusters, num_recs, start_cluster;
u64 start_blk;
struct ocfs2_journal_handle *handle;
handle_t *handle;
struct inode *tl_inode = osb->osb_tl_inode;
struct ocfs2_truncate_log *tl;
......@@ -1373,8 +1365,7 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
}
}
handle = ocfs2_start_trans(osb, NULL,
OCFS2_TRUNCATE_LOG_UPDATE);
handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
......@@ -1387,7 +1378,7 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
status = ocfs2_truncate_log_append(osb, handle,
start_blk, clusters);
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
if (status < 0) {
mlog_errno(status);
goto bail_up;
......@@ -1543,7 +1534,7 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb,
struct inode *inode,
struct buffer_head *fe_bh,
struct buffer_head *old_last_eb_bh,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_truncate_context *tc)
{
int status, i, depth;
......@@ -1782,7 +1773,7 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
struct buffer_head *last_eb_bh;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct inode *tl_inode = osb->osb_tl_inode;
mlog_entry_void();
......@@ -1868,7 +1859,7 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
credits = ocfs2_calc_tree_trunc_credits(osb->sb, clusters_to_del,
fe, el);
handle = ocfs2_start_trans(osb, NULL, credits);
handle = ocfs2_start_trans(osb, credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
......@@ -1891,7 +1882,7 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
mutex_unlock(&tl_inode->i_mutex);
tl_sem = 0;
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
handle = NULL;
BUG_ON(le32_to_cpu(fe->i_clusters) < target_i_clusters);
......@@ -1906,7 +1897,7 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
mutex_unlock(&tl_inode->i_mutex);
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
if (last_eb_bh)
brelse(last_eb_bh);
......@@ -2011,10 +2002,7 @@ int ocfs2_prepare_truncate(struct ocfs2_super *osb,
mutex_lock(&ext_alloc_inode->i_mutex);
(*tc)->tc_ext_alloc_inode = ext_alloc_inode;
status = ocfs2_meta_lock(ext_alloc_inode,
NULL,
&ext_alloc_bh,
1);
status = ocfs2_meta_lock(ext_alloc_inode, &ext_alloc_bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
......
fs/ocfs2/alloc.h
浏览文件 @ 651857a1
......@@ -28,7 +28,7 @@
struct ocfs2_alloc_context;
int ocfs2_insert_extent(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
u64 blkno,
......
fs/ocfs2/aops.c
浏览文件 @ 651857a1
......@@ -200,7 +200,7 @@ static int ocfs2_readpage(struct file *file, struct page *page)
mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0));
ret = ocfs2_meta_lock_with_page(inode, NULL, NULL, 0, page);
ret = ocfs2_meta_lock_with_page(inode, NULL, 0, page);
if (ret != 0) {
if (ret == AOP_TRUNCATED_PAGE)
unlock = 0;
......@@ -305,7 +305,7 @@ static int ocfs2_prepare_write(struct file *file, struct page *page,
mlog_entry("(0x%p, 0x%p, %u, %u)\n", file, page, from, to);
ret = ocfs2_meta_lock_with_page(inode, NULL, NULL, 0, page);
ret = ocfs2_meta_lock_with_page(inode, NULL, 0, page);
if (ret != 0) {
mlog_errno(ret);
goto out;
......@@ -355,16 +355,16 @@ static int walk_page_buffers( handle_t *handle,
return ret;
}
struct ocfs2_journal_handle *ocfs2_start_walk_page_trans(struct inode *inode,
handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
struct page *page,
unsigned from,
unsigned to)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
int ret = 0;
handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (!handle) {
ret = -ENOMEM;
mlog_errno(ret);
......@@ -372,7 +372,7 @@ struct ocfs2_journal_handle *ocfs2_start_walk_page_trans(struct inode *inode,
}
if (ocfs2_should_order_data(inode)) {
ret = walk_page_buffers(handle->k_handle,
ret = walk_page_buffers(handle,
page_buffers(page),
from, to, NULL,
ocfs2_journal_dirty_data);
......@@ -382,7 +382,7 @@ struct ocfs2_journal_handle *ocfs2_start_walk_page_trans(struct inode *inode,
out:
if (ret) {
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
handle = ERR_PTR(ret);
}
return handle;
......@@ -394,7 +394,7 @@ static int ocfs2_commit_write(struct file *file, struct page *page,
int ret;
struct buffer_head *di_bh = NULL;
struct inode *inode = page->mapping->host;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct ocfs2_dinode *di;
mlog_entry("(0x%p, 0x%p, %u, %u)\n", file, page, from, to);
......@@ -412,7 +412,7 @@ static int ocfs2_commit_write(struct file *file, struct page *page,
* stale inode allocation image (i_size, i_clusters, etc).
*/
ret = ocfs2_meta_lock_with_page(inode, NULL, &di_bh, 1, page);
ret = ocfs2_meta_lock_with_page(inode, &di_bh, 1, page);
if (ret != 0) {
mlog_errno(ret);
goto out;
......@@ -464,7 +464,7 @@ static int ocfs2_commit_write(struct file *file, struct page *page,
}
out_commit:
ocfs2_commit_trans(handle);
ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out_unlock_data:
ocfs2_data_unlock(inode, 1);
out_unlock_meta:
......@@ -490,7 +490,7 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
* accessed concurrently from multiple nodes.
*/
if (!INODE_JOURNAL(inode)) {
err = ocfs2_meta_lock(inode, NULL, NULL, 0);
err = ocfs2_meta_lock(inode, NULL, 0);
if (err) {
if (err != -ENOENT)
mlog_errno(err);
......
fs/ocfs2/aops.h
浏览文件 @ 651857a1
......@@ -25,7 +25,7 @@
int ocfs2_prepare_write_nolock(struct inode *inode, struct page *page,
unsigned from, unsigned to);
struct ocfs2_journal_handle *ocfs2_start_walk_page_trans(struct inode *inode,
handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
struct page *page,
unsigned from,
unsigned to);
......
fs/ocfs2/dir.c
浏览文件 @ 651857a1
......@@ -82,6 +82,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
struct inode *inode = filp->f_dentry->d_inode;
struct super_block * sb = inode->i_sb;
unsigned int ra_sectors = 16;
int lock_level = 0;
mlog_entry("dirino=%llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
......@@ -89,7 +90,15 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
stored = 0;
bh = NULL;
error = ocfs2_meta_lock(inode, NULL, NULL, 0);
error = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level);
if (lock_level && error >= 0) {
/* We release EX lock which used to update atime
* and get PR lock again to reduce contention
* on commonly accessed directories. */
ocfs2_meta_unlock(inode, 1);
lock_level = 0;
error = ocfs2_meta_lock(inode, NULL, 0);
}
if (error < 0) {
if (error != -ENOENT)
mlog_errno(error);
......@@ -198,7 +207,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
stored = 0;
bail:
ocfs2_meta_unlock(inode, 0);
ocfs2_meta_unlock(inode, lock_level);
bail_nolock:
mlog_exit(stored);
......@@ -340,7 +349,7 @@ int ocfs2_empty_dir(struct inode *inode)
/* returns a bh of the 1st new block in the allocation. */
int ocfs2_do_extend_dir(struct super_block *sb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *dir,
struct buffer_head *parent_fe_bh,
struct ocfs2_alloc_context *data_ac,
......@@ -398,7 +407,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
struct ocfs2_dinode *fe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
struct ocfs2_alloc_context *data_ac = NULL;
struct ocfs2_alloc_context *meta_ac = NULL;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct buffer_head *new_bh = NULL;
struct ocfs2_dir_entry * de;
struct super_block *sb = osb->sb;
......@@ -409,13 +418,6 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
mlog(0, "extending dir %llu (i_size = %lld)\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno, dir_i_size);
handle = ocfs2_alloc_handle(osb);
if (handle == NULL) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
/* dir->i_size is always block aligned. */
spin_lock(&OCFS2_I(dir)->ip_lock);
if (dir_i_size == ocfs2_clusters_to_bytes(sb, OCFS2_I(dir)->ip_clusters)) {
......@@ -428,8 +430,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
}
if (!num_free_extents) {
status = ocfs2_reserve_new_metadata(osb, handle,
fe, &meta_ac);
status = ocfs2_reserve_new_metadata(osb, fe, &meta_ac);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
......@@ -437,7 +438,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
}
}
status = ocfs2_reserve_clusters(osb, handle, 1, &data_ac);
status = ocfs2_reserve_clusters(osb, 1, &data_ac);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
......@@ -450,7 +451,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS;
}
handle = ocfs2_start_trans(osb, handle, credits);
handle = ocfs2_start_trans(osb, credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
......@@ -496,7 +497,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
get_bh(*new_de_bh);
bail:
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
if (data_ac)
ocfs2_free_alloc_context(data_ac);
......
fs/ocfs2/dir.h
浏览文件 @ 651857a1
......@@ -45,7 +45,7 @@ int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
struct buffer_head **ret_de_bh);
struct ocfs2_alloc_context;
int ocfs2_do_extend_dir(struct super_block *sb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *dir,
struct buffer_head *parent_fe_bh,
struct ocfs2_alloc_context *data_ac,
......
fs/ocfs2/dlm/dlmdomain.c
浏览文件 @ 651857a1
......@@ -68,7 +68,8 @@ static void **dlm_alloc_pagevec(int pages)
goto out_free;
mlog(0, "Allocated DLM hash pagevec; %d pages (%lu expected), %lu buckets per page\n",
pages, DLM_HASH_PAGES, (unsigned long)DLM_BUCKETS_PER_PAGE);
pages, (unsigned long)DLM_HASH_PAGES,
(unsigned long)DLM_BUCKETS_PER_PAGE);
return vec;
out_free:
dlm_free_pagevec(vec, i);
......
fs/ocfs2/dlmglue.c
浏览文件 @ 651857a1
......@@ -49,6 +49,7 @@
#include "dcache.h"
#include "dlmglue.h"
#include "extent_map.h"
#include "file.h"
#include "heartbeat.h"
#include "inode.h"
#include "journal.h"
......@@ -1063,10 +1064,10 @@ static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
mlog_exit_void();
}
int ocfs2_create_new_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int ex,
int local)
static int ocfs2_create_new_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int ex,
int local)
{
int level = ex ? LKM_EXMODE : LKM_PRMODE;
unsigned long flags;
......@@ -1579,7 +1580,6 @@ static int ocfs2_assign_bh(struct inode *inode,
* the result of the lock will be communicated via the callback.
*/
int ocfs2_meta_lock_full(struct inode *inode,
struct ocfs2_journal_handle *handle,
struct buffer_head **ret_bh,
int ex,
int arg_flags)
......@@ -1668,12 +1668,6 @@ int ocfs2_meta_lock_full(struct inode *inode,
}
}
if (handle) {
status = ocfs2_handle_add_lock(handle, inode);
if (status < 0)
mlog_errno(status);
}
bail:
if (status < 0) {
if (ret_bh && (*ret_bh)) {
......@@ -1713,18 +1707,16 @@ int ocfs2_meta_lock_full(struct inode *inode,
* the lock inversion simply.
*/
int ocfs2_meta_lock_with_page(struct inode *inode,
struct ocfs2_journal_handle *handle,
struct buffer_head **ret_bh,
int ex,
struct page *page)
{
int ret;
ret = ocfs2_meta_lock_full(inode, handle, ret_bh, ex,
OCFS2_LOCK_NONBLOCK);
ret = ocfs2_meta_lock_full(inode, ret_bh, ex, OCFS2_LOCK_NONBLOCK);
if (ret == -EAGAIN) {
unlock_page(page);
if (ocfs2_meta_lock(inode, handle, ret_bh, ex) == 0)
if (ocfs2_meta_lock(inode, ret_bh, ex) == 0)
ocfs2_meta_unlock(inode, ex);
ret = AOP_TRUNCATED_PAGE;
}
......@@ -1732,6 +1724,44 @@ int ocfs2_meta_lock_with_page(struct inode *inode,
return ret;
}
int ocfs2_meta_lock_atime(struct inode *inode,
struct vfsmount *vfsmnt,
int *level)
{
int ret;
mlog_entry_void();
ret = ocfs2_meta_lock(inode, NULL, 0);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
/*
* If we should update atime, we will get EX lock,
* otherwise we just get PR lock.
*/
if (ocfs2_should_update_atime(inode, vfsmnt)) {
struct buffer_head *bh = NULL;
ocfs2_meta_unlock(inode, 0);
ret = ocfs2_meta_lock(inode, &bh, 1);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
*level = 1;
if (ocfs2_should_update_atime(inode, vfsmnt))
ocfs2_update_inode_atime(inode, bh);
if (bh)
brelse(bh);
} else
*level = 0;
mlog_exit(ret);
return ret;
}
void ocfs2_meta_unlock(struct inode *inode,
int ex)
{
......
fs/ocfs2/dlmglue.h
浏览文件 @ 651857a1
......@@ -68,8 +68,6 @@ void ocfs2_dentry_lock_res_init(struct ocfs2_dentry_lock *dl,
u64 parent, struct inode *inode);
void ocfs2_lock_res_free(struct ocfs2_lock_res *res);
int ocfs2_create_new_inode_locks(struct inode *inode);
int ocfs2_create_new_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres, int ex, int local);
int ocfs2_drop_inode_locks(struct inode *inode);
int ocfs2_data_lock_full(struct inode *inode,
int write,
......@@ -82,19 +80,20 @@ void ocfs2_data_unlock(struct inode *inode,
int write);
int ocfs2_rw_lock(struct inode *inode, int write);
void ocfs2_rw_unlock(struct inode *inode, int write);
int ocfs2_meta_lock_atime(struct inode *inode,
struct vfsmount *vfsmnt,
int *level);
int ocfs2_meta_lock_full(struct inode *inode,
struct ocfs2_journal_handle *handle,
struct buffer_head **ret_bh,
int ex,
int arg_flags);
int ocfs2_meta_lock_with_page(struct inode *inode,
struct ocfs2_journal_handle *handle,
struct buffer_head **ret_bh,
int ex,
struct page *page);
/* 99% of the time we don't want to supply any additional flags --
* those are for very specific cases only. */
#define ocfs2_meta_lock(i, h, b, e) ocfs2_meta_lock_full(i, h, b, e, 0)
#define ocfs2_meta_lock(i, b, e) ocfs2_meta_lock_full(i, b, e, 0)
void ocfs2_meta_unlock(struct inode *inode,
int ex);
int ocfs2_super_lock(struct ocfs2_super *osb,
......
fs/ocfs2/export.c
浏览文件 @ 651857a1
......@@ -100,7 +100,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
mlog(0, "find parent of directory %llu\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno);
status = ocfs2_meta_lock(dir, NULL, NULL, 0);
status = ocfs2_meta_lock(dir, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
......
fs/ocfs2/file.c
浏览文件 @ 651857a1
......@@ -31,6 +31,8 @@
#include <linux/pagemap.h>
#include <linux/uio.h>
#include <linux/sched.h>
#include <linux/pipe_fs_i.h>
#include <linux/mount.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
......@@ -134,7 +136,58 @@ static int ocfs2_sync_file(struct file *file,
return (err < 0) ? -EIO : 0;
}
int ocfs2_set_inode_size(struct ocfs2_journal_handle *handle,
int ocfs2_should_update_atime(struct inode *inode,
struct vfsmount *vfsmnt)
{
struct timespec now;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
return 0;
if ((inode->i_flags & S_NOATIME) ||
((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode)))
return 0;
if ((vfsmnt->mnt_flags & MNT_NOATIME) ||
((vfsmnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
return 0;
now = CURRENT_TIME;
if ((now.tv_sec - inode->i_atime.tv_sec <= osb->s_atime_quantum))
return 0;
else
return 1;
}
int ocfs2_update_inode_atime(struct inode *inode,
struct buffer_head *bh)
{
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
handle_t *handle;
mlog_entry_void();
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (handle == NULL) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
}
inode->i_atime = CURRENT_TIME;
ret = ocfs2_mark_inode_dirty(handle, inode, bh);
if (ret < 0)
mlog_errno(ret);
ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
mlog_exit(ret);
return ret;
}
int ocfs2_set_inode_size(handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
u64 new_i_size)
......@@ -163,10 +216,9 @@ static int ocfs2_simple_size_update(struct inode *inode,
{
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
handle = ocfs2_start_trans(osb, NULL,
OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (handle == NULL) {
ret = -ENOMEM;
mlog_errno(ret);
......@@ -178,7 +230,7 @@ static int ocfs2_simple_size_update(struct inode *inode,
if (ret < 0)
mlog_errno(ret);
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
out:
return ret;
}
......@@ -189,14 +241,14 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb,
u64 new_i_size)
{
int status;
struct ocfs2_journal_handle *handle;
handle_t *handle;
mlog_entry_void();
/* TODO: This needs to actually orphan the inode in this
* transaction. */
handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
......@@ -207,7 +259,7 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb,
if (status < 0)
mlog_errno(status);
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
out:
mlog_exit(status);
return status;
......@@ -328,7 +380,7 @@ int ocfs2_do_extend_allocation(struct ocfs2_super *osb,
struct inode *inode,
u32 clusters_to_add,
struct buffer_head *fe_bh,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *data_ac,
struct ocfs2_alloc_context *meta_ac,
enum ocfs2_alloc_restarted *reason_ret)
......@@ -433,7 +485,7 @@ static int ocfs2_extend_allocation(struct inode *inode,
u32 prev_clusters;
struct buffer_head *bh = NULL;
struct ocfs2_dinode *fe = NULL;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct ocfs2_alloc_context *data_ac = NULL;
struct ocfs2_alloc_context *meta_ac = NULL;
enum ocfs2_alloc_restarted why;
......@@ -463,13 +515,6 @@ static int ocfs2_extend_allocation(struct inode *inode,
(unsigned long long)OCFS2_I(inode)->ip_blkno, i_size_read(inode),
fe->i_clusters, clusters_to_add);
handle = ocfs2_alloc_handle(osb);
if (handle == NULL) {
status = -ENOMEM;
mlog_errno(status);
goto leave;
}
num_free_extents = ocfs2_num_free_extents(osb,
inode,
fe);
......@@ -480,10 +525,7 @@ static int ocfs2_extend_allocation(struct inode *inode,
}
if (!num_free_extents) {
status = ocfs2_reserve_new_metadata(osb,
handle,
fe,
&meta_ac);
status = ocfs2_reserve_new_metadata(osb, fe, &meta_ac);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
......@@ -491,10 +533,7 @@ static int ocfs2_extend_allocation(struct inode *inode,
}
}
status = ocfs2_reserve_clusters(osb,
handle,
clusters_to_add,
&data_ac);
status = ocfs2_reserve_clusters(osb, clusters_to_add, &data_ac);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
......@@ -509,7 +548,7 @@ static int ocfs2_extend_allocation(struct inode *inode,
drop_alloc_sem = 1;
credits = ocfs2_calc_extend_credits(osb->sb, fe, clusters_to_add);
handle = ocfs2_start_trans(osb, handle, credits);
handle = ocfs2_start_trans(osb, credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
......@@ -589,7 +628,7 @@ static int ocfs2_extend_allocation(struct inode *inode,
drop_alloc_sem = 0;
}
if (handle) {
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
handle = NULL;
}
if (data_ac) {
......@@ -624,7 +663,7 @@ static int ocfs2_write_zero_page(struct inode *inode,
struct page *page;
unsigned long index;
unsigned int offset;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
int ret;
offset = (size & (PAGE_CACHE_SIZE-1)); /* Within page */
......@@ -668,7 +707,7 @@ static int ocfs2_write_zero_page(struct inode *inode,
ret = 0;
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out_unlock:
unlock_page(page);
page_cache_release(page);
......@@ -789,7 +828,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
struct super_block *sb = inode->i_sb;
struct ocfs2_super *osb = OCFS2_SB(sb);
struct buffer_head *bh = NULL;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
mlog_entry("(0x%p, '%.*s')\n", dentry,
dentry->d_name.len, dentry->d_name.name);
......@@ -825,7 +864,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
}
status = ocfs2_meta_lock(inode, NULL, &bh, 1);
status = ocfs2_meta_lock(inode, &bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
......@@ -845,7 +884,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
}
handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
......@@ -863,7 +902,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
mlog_errno(status);
bail_commit:
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode, 1);
bail_unlock_rw:
......@@ -906,19 +945,41 @@ int ocfs2_getattr(struct vfsmount *mnt,
return err;
}
int ocfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
{
int ret;
mlog_entry_void();
ret = ocfs2_meta_lock(inode, NULL, 0);
if (ret) {
mlog_errno(ret);
goto out;
}
ret = generic_permission(inode, mask, NULL);
if (ret)
mlog_errno(ret);
ocfs2_meta_unlock(inode, 0);
out:
mlog_exit(ret);
return ret;
}
static int ocfs2_write_remove_suid(struct inode *inode)
{
int ret;
struct buffer_head *bh = NULL;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_journal_handle *handle;
handle_t *handle;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_dinode *di;
mlog_entry("(Inode %llu, mode 0%o)\n",
(unsigned long long)oi->ip_blkno, inode->i_mode);
handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (handle == NULL) {
ret = -ENOMEM;
mlog_errno(ret);
......@@ -951,75 +1012,29 @@ static int ocfs2_write_remove_suid(struct inode *inode)
out_bh:
brelse(bh);
out_trans:
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
out:
mlog_exit(ret);
return ret;
}
static inline int ocfs2_write_should_remove_suid(struct inode *inode)
{
mode_t mode = inode->i_mode;
if (!capable(CAP_FSETID)) {
if (unlikely(mode & S_ISUID))
return 1;
if (unlikely((mode & S_ISGID) && (mode & S_IXGRP)))
return 1;
}
return 0;
}
static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
const struct iovec *iov,
unsigned long nr_segs,
loff_t pos)
static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
loff_t *ppos,
size_t count,
int appending)
{
int ret, rw_level = -1, meta_level = -1, have_alloc_sem = 0;
int ret = 0, meta_level = appending;
struct inode *inode = dentry->d_inode;
u32 clusters;
struct file *filp = iocb->ki_filp;
struct inode *inode = filp->f_dentry->d_inode;
loff_t newsize, saved_pos;
mlog_entry("(0x%p, %u, '%.*s')\n", filp,
(unsigned int)nr_segs,
filp->f_dentry->d_name.len,
filp->f_dentry->d_name.name);
/* happy write of zero bytes */
if (iocb->ki_left == 0)
return 0;
if (!inode) {
mlog(0, "bad inode\n");
return -EIO;
}
mutex_lock(&inode->i_mutex);
/* to match setattr's i_mutex -> i_alloc_sem -> rw_lock ordering */
if (filp->f_flags & O_DIRECT) {
have_alloc_sem = 1;
down_read(&inode->i_alloc_sem);
}
/* concurrent O_DIRECT writes are allowed */
rw_level = (filp->f_flags & O_DIRECT) ? 0 : 1;
ret = ocfs2_rw_lock(inode, rw_level);
if (ret < 0) {
rw_level = -1;
mlog_errno(ret);
goto out;
}
/*
* We sample i_size under a read level meta lock to see if our write
* is extending the file, if it is we back off and get a write level
* meta lock.
*/
meta_level = (filp->f_flags & O_APPEND) ? 1 : 0;
for(;;) {
ret = ocfs2_meta_lock(inode, NULL, NULL, meta_level);
ret = ocfs2_meta_lock(inode, NULL, meta_level);
if (ret < 0) {
meta_level = -1;
mlog_errno(ret);
......@@ -1035,7 +1050,7 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
* inode. There's also the dinode i_size state which
* can be lost via setattr during extending writes (we
* set inode->i_size at the end of a write. */
if (ocfs2_write_should_remove_suid(inode)) {
if (should_remove_suid(dentry)) {
if (meta_level == 0) {
ocfs2_meta_unlock(inode, meta_level);
meta_level = 1;
......@@ -1045,19 +1060,19 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
ret = ocfs2_write_remove_suid(inode);
if (ret < 0) {
mlog_errno(ret);
goto out;
goto out_unlock;
}
}
/* work on a copy of ppos until we're sure that we won't have
* to recalculate it due to relocking. */
if (filp->f_flags & O_APPEND) {
if (appending) {
saved_pos = i_size_read(inode);
mlog(0, "O_APPEND: inode->i_size=%llu\n", saved_pos);
} else {
saved_pos = iocb->ki_pos;
saved_pos = *ppos;
}
newsize = iocb->ki_left + saved_pos;
newsize = count + saved_pos;
mlog(0, "pos=%lld newsize=%lld cursize=%lld\n",
(long long) saved_pos, (long long) newsize,
......@@ -1090,19 +1105,66 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
if (!clusters)
break;
ret = ocfs2_extend_file(inode, NULL, newsize, iocb->ki_left);
ret = ocfs2_extend_file(inode, NULL, newsize, count);
if (ret < 0) {
if (ret != -ENOSPC)
mlog_errno(ret);
goto out;
goto out_unlock;
}
break;
}
/* ok, we're done with i_size and alloc work */
iocb->ki_pos = saved_pos;
if (appending)
*ppos = saved_pos;
out_unlock:
ocfs2_meta_unlock(inode, meta_level);
meta_level = -1;
out:
return ret;
}
static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
const struct iovec *iov,
unsigned long nr_segs,
loff_t pos)
{
int ret, rw_level, have_alloc_sem = 0;
struct file *filp = iocb->ki_filp;
struct inode *inode = filp->f_dentry->d_inode;
int appending = filp->f_flags & O_APPEND ? 1 : 0;
mlog_entry("(0x%p, %u, '%.*s')\n", filp,
(unsigned int)nr_segs,
filp->f_dentry->d_name.len,
filp->f_dentry->d_name.name);
/* happy write of zero bytes */
if (iocb->ki_left == 0)
return 0;
mutex_lock(&inode->i_mutex);
/* to match setattr's i_mutex -> i_alloc_sem -> rw_lock ordering */
if (filp->f_flags & O_DIRECT) {
have_alloc_sem = 1;
down_read(&inode->i_alloc_sem);
}
/* concurrent O_DIRECT writes are allowed */
rw_level = (filp->f_flags & O_DIRECT) ? 0 : 1;
ret = ocfs2_rw_lock(inode, rw_level);
if (ret < 0) {
rw_level = -1;
mlog_errno(ret);
goto out;
}
ret = ocfs2_prepare_inode_for_write(filp->f_dentry, &iocb->ki_pos,
iocb->ki_left, appending);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
/* communicate with ocfs2_dio_end_io */
ocfs2_iocb_set_rw_locked(iocb);
......@@ -1128,8 +1190,6 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
}
out:
if (meta_level != -1)
ocfs2_meta_unlock(inode, meta_level);
if (have_alloc_sem)
up_read(&inode->i_alloc_sem);
if (rw_level != -1)
......@@ -1140,12 +1200,83 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
return ret;
}
static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
struct file *out,
loff_t *ppos,
size_t len,
unsigned int flags)
{
int ret;
struct inode *inode = out->f_dentry->d_inode;
mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", out, pipe,
(unsigned int)len,
out->f_dentry->d_name.len,
out->f_dentry->d_name.name);
inode_double_lock(inode, pipe->inode);
ret = ocfs2_rw_lock(inode, 1);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_prepare_inode_for_write(out->f_dentry, ppos, len, 0);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
/* ok, we're done with i_size and alloc work */
ret = generic_file_splice_write_nolock(pipe, out, ppos, len, flags);
out_unlock:
ocfs2_rw_unlock(inode, 1);
out:
inode_double_unlock(inode, pipe->inode);
mlog_exit(ret);
return ret;
}
static ssize_t ocfs2_file_splice_read(struct file *in,
loff_t *ppos,
struct pipe_inode_info *pipe,
size_t len,
unsigned int flags)
{
int ret = 0;
struct inode *inode = in->f_dentry->d_inode;
mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", in, pipe,
(unsigned int)len,
in->f_dentry->d_name.len,
in->f_dentry->d_name.name);
/*
* See the comment in ocfs2_file_aio_read()
*/
ret = ocfs2_meta_lock(inode, NULL, 0);
if (ret < 0) {
mlog_errno(ret);
goto bail;
}
ocfs2_meta_unlock(inode, 0);
ret = generic_file_splice_read(in, ppos, pipe, len, flags);
bail:
mlog_exit(ret);
return ret;
}
static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
const struct iovec *iov,
unsigned long nr_segs,
loff_t pos)
{
int ret = 0, rw_level = -1, have_alloc_sem = 0;
int ret = 0, rw_level = -1, have_alloc_sem = 0, lock_level = 0;
struct file *filp = iocb->ki_filp;
struct inode *inode = filp->f_dentry->d_inode;
......@@ -1187,12 +1318,12 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
* like i_size. This allows the checks down below
* generic_file_aio_read() a chance of actually working.
*/
ret = ocfs2_meta_lock(inode, NULL, NULL, 0);
ret = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level);
if (ret < 0) {
mlog_errno(ret);
goto bail;
}
ocfs2_meta_unlock(inode, 0);
ocfs2_meta_unlock(inode, lock_level);
ret = generic_file_aio_read(iocb, iov, nr_segs, iocb->ki_pos);
if (ret == -EINVAL)
......@@ -1220,11 +1351,13 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
struct inode_operations ocfs2_file_iops = {
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
};
struct inode_operations ocfs2_special_file_iops = {
.setattr = ocfs2_setattr,
.getattr = ocfs2_getattr,
.permission = ocfs2_permission,
};
const struct file_operations ocfs2_fops = {
......@@ -1238,6 +1371,8 @@ const struct file_operations ocfs2_fops = {
.aio_read = ocfs2_file_aio_read,
.aio_write = ocfs2_file_aio_write,
.ioctl = ocfs2_ioctl,
.splice_read = ocfs2_file_splice_read,
.splice_write = ocfs2_file_splice_write,
};
const struct file_operations ocfs2_dops = {
......
fs/ocfs2/file.h
浏览文件 @ 651857a1
......@@ -41,17 +41,24 @@ int ocfs2_do_extend_allocation(struct ocfs2_super *osb,
struct inode *inode,
u32 clusters_to_add,
struct buffer_head *fe_bh,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *data_ac,
struct ocfs2_alloc_context *meta_ac,
enum ocfs2_alloc_restarted *reason);
int ocfs2_setattr(struct dentry *dentry, struct iattr *attr);
int ocfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat);
int ocfs2_permission(struct inode *inode, int mask,
struct nameidata *nd);
int ocfs2_set_inode_size(struct ocfs2_journal_handle *handle,
int ocfs2_set_inode_size(handle_t *handle,
struct inode *inode,
struct buffer_head *fe_bh,
u64 new_i_size);
int ocfs2_should_update_atime(struct inode *inode,
struct vfsmount *vfsmnt);
int ocfs2_update_inode_atime(struct inode *inode,
struct buffer_head *bh);
#endif /* OCFS2_FILE_H */
fs/ocfs2/inode.c
浏览文件 @ 651857a1
......@@ -360,7 +360,6 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
inode);
ocfs2_set_inode_flags(inode);
inode->i_flags |= S_NOATIME;
status = 0;
bail:
......@@ -441,7 +440,7 @@ static int ocfs2_read_locked_inode(struct inode *inode,
generation, inode);
if (can_lock) {
status = ocfs2_meta_lock(inode, NULL, NULL, 0);
status = ocfs2_meta_lock(inode, NULL, 0);
if (status) {
make_bad_inode(inode);
mlog_errno(status);
......@@ -512,7 +511,7 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
struct buffer_head *fe_bh)
{
int status = 0;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct ocfs2_truncate_context *tc = NULL;
struct ocfs2_dinode *fe;
......@@ -524,7 +523,7 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
if (!fe->i_clusters)
goto bail;
handle = ocfs2_start_trans(osb, handle, OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
......@@ -538,7 +537,7 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
goto bail;
}
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
handle = NULL;
status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc);
......@@ -554,7 +553,7 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
}
bail:
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
mlog_exit(status);
return status;
......@@ -568,7 +567,7 @@ static int ocfs2_remove_inode(struct inode *inode,
int status;
struct inode *inode_alloc_inode = NULL;
struct buffer_head *inode_alloc_bh = NULL;
struct ocfs2_journal_handle *handle;
handle_t *handle;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
......@@ -582,7 +581,7 @@ static int ocfs2_remove_inode(struct inode *inode,
}
mutex_lock(&inode_alloc_inode->i_mutex);
status = ocfs2_meta_lock(inode_alloc_inode, NULL, &inode_alloc_bh, 1);
status = ocfs2_meta_lock(inode_alloc_inode, &inode_alloc_bh, 1);
if (status < 0) {
mutex_unlock(&inode_alloc_inode->i_mutex);
......@@ -590,7 +589,7 @@ static int ocfs2_remove_inode(struct inode *inode,
goto bail;
}
handle = ocfs2_start_trans(osb, NULL, OCFS2_DELETE_INODE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
......@@ -629,7 +628,7 @@ static int ocfs2_remove_inode(struct inode *inode,
mlog_errno(status);
bail_commit:
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode_alloc_inode, 1);
mutex_unlock(&inode_alloc_inode->i_mutex);
......@@ -705,7 +704,7 @@ static int ocfs2_wipe_inode(struct inode *inode,
* delete_inode operation. We do this now to avoid races with
* recovery completion on other nodes. */
mutex_lock(&orphan_dir_inode->i_mutex);
status = ocfs2_meta_lock(orphan_dir_inode, NULL, &orphan_dir_bh, 1);
status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1);
if (status < 0) {
mutex_unlock(&orphan_dir_inode->i_mutex);
......@@ -933,7 +932,7 @@ void ocfs2_delete_inode(struct inode *inode)
* allocation lock here as it won't be needed - nobody will
* have the file open.
*/
status = ocfs2_meta_lock(inode, NULL, &di_bh, 1);
status = ocfs2_meta_lock(inode, &di_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
......@@ -1067,12 +1066,6 @@ void ocfs2_clear_inode(struct inode *inode)
mlog_bug_on_msg(oi->ip_open_count,
"Clear inode of %llu has open count %d\n",
(unsigned long long)oi->ip_blkno, oi->ip_open_count);
mlog_bug_on_msg(!list_empty(&oi->ip_handle_list),
"Clear inode of %llu has non empty handle list\n",
(unsigned long long)oi->ip_blkno);
mlog_bug_on_msg(oi->ip_handle,
"Clear inode of %llu has non empty handle pointer\n",
(unsigned long long)oi->ip_blkno);
/* Clear all other flags. */
oi->ip_flags = OCFS2_INODE_CACHE_INLINE;
......@@ -1186,7 +1179,7 @@ int ocfs2_inode_revalidate(struct dentry *dentry)
/* Let ocfs2_meta_lock do the work of updating our struct
* inode for us. */
status = ocfs2_meta_lock(inode, NULL, NULL, 0);
status = ocfs2_meta_lock(inode, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
......@@ -1204,7 +1197,7 @@ int ocfs2_inode_revalidate(struct dentry *dentry)
* struct inode.
* Only takes ip_lock.
*/
int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
int ocfs2_mark_inode_dirty(handle_t *handle,
struct inode *inode,
struct buffer_head *bh)
{
......
fs/ocfs2/inode.h
浏览文件 @ 651857a1
......@@ -48,13 +48,6 @@ struct ocfs2_inode_info
struct mutex ip_io_mutex;
/* Used by the journalling code to attach an inode to a
* handle. These are protected by ip_io_mutex in order to lock
* out other I/O to the inode until we either commit or
* abort. */
struct list_head ip_handle_list;
struct ocfs2_journal_handle *ip_handle;
u32 ip_flags; /* see below */
u32 ip_attr; /* inode attributes */
......@@ -143,7 +136,7 @@ ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
void ocfs2_sync_blockdev(struct super_block *sb);
void ocfs2_refresh_inode(struct inode *inode,
struct ocfs2_dinode *fe);
int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
int ocfs2_mark_inode_dirty(handle_t *handle,
struct inode *inode,
struct buffer_head *bh);
int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
......
fs/ocfs2/ioctl.c
浏览文件 @ 651857a1
......@@ -26,7 +26,7 @@ static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
{
int status;
status = ocfs2_meta_lock(inode, NULL, NULL, 0);
status = ocfs2_meta_lock(inode, NULL, 0);
if (status < 0) {
mlog_errno(status);
return status;
......@@ -43,14 +43,14 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
{
struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct buffer_head *bh = NULL;
unsigned oldflags;
int status;
mutex_lock(&inode->i_mutex);
status = ocfs2_meta_lock(inode, NULL, &bh, 1);
status = ocfs2_meta_lock(inode, &bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
......@@ -67,7 +67,7 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
if (!S_ISDIR(inode->i_mode))
flags &= ~OCFS2_DIRSYNC_FL;
handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
......@@ -96,7 +96,7 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
if (status < 0)
mlog_errno(status);
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode, 1);
bail:
......
fs/ocfs2/journal.c
浏览文件 @ 651857a1
......@@ -57,9 +57,6 @@ static int ocfs2_recover_node(struct ocfs2_super *osb,
static int __ocfs2_recovery_thread(void *arg);
static int ocfs2_commit_cache(struct ocfs2_super *osb);
static int ocfs2_wait_on_mount(struct ocfs2_super *osb);
static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,
struct ocfs2_journal_handle *handle);
static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle);
static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
int dirty);
static int ocfs2_trylock_journal(struct ocfs2_super *osb,
......@@ -113,46 +110,18 @@ static int ocfs2_commit_cache(struct ocfs2_super *osb)
return status;
}
struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb)
{
struct ocfs2_journal_handle *retval = NULL;
retval = kcalloc(1, sizeof(*retval), GFP_NOFS);
if (!retval) {
mlog(ML_ERROR, "Failed to allocate memory for journal "
"handle!\n");
return NULL;
}
retval->max_buffs = 0;
retval->num_locks = 0;
retval->k_handle = NULL;
INIT_LIST_HEAD(&retval->locks);
INIT_LIST_HEAD(&retval->inode_list);
retval->journal = osb->journal;
return retval;
}
/* pass it NULL and it will allocate a new handle object for you. If
* you pass it a handle however, it may still return error, in which
* case it has free'd the passed handle for you. */
struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
int max_buffs)
handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
{
int ret;
journal_t *journal = osb->journal->j_journal;
mlog_entry("(max_buffs = %d)\n", max_buffs);
handle_t *handle;
BUG_ON(!osb || !osb->journal->j_journal);
if (ocfs2_is_hard_readonly(osb)) {
ret = -EROFS;
goto done_free;
}
if (ocfs2_is_hard_readonly(osb))
return ERR_PTR(-EROFS);
BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
BUG_ON(max_buffs <= 0);
......@@ -163,154 +132,39 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
BUG();
}
if (!handle)
handle = ocfs2_alloc_handle(osb);
if (!handle) {
ret = -ENOMEM;
mlog(ML_ERROR, "Failed to allocate memory for journal "
"handle!\n");
goto done_free;
}
handle->max_buffs = max_buffs;
down_read(&osb->journal->j_trans_barrier);
/* actually start the transaction now */
handle->k_handle = journal_start(journal, max_buffs);
if (IS_ERR(handle->k_handle)) {
handle = journal_start(journal, max_buffs);
if (IS_ERR(handle)) {
up_read(&osb->journal->j_trans_barrier);
ret = PTR_ERR(handle->k_handle);
handle->k_handle = NULL;
mlog_errno(ret);
mlog_errno(PTR_ERR(handle));
if (is_journal_aborted(journal)) {
ocfs2_abort(osb->sb, "Detected aborted journal");
ret = -EROFS;
handle = ERR_PTR(-EROFS);
}
goto done_free;
}
atomic_inc(&(osb->journal->j_num_trans));
handle->flags |= OCFS2_HANDLE_STARTED;
} else
atomic_inc(&(osb->journal->j_num_trans));
mlog_exit_ptr(handle);
return handle;
done_free:
if (handle)
ocfs2_commit_unstarted_handle(handle); /* will kfree handle */
mlog_exit(ret);
return ERR_PTR(ret);
}
void ocfs2_handle_add_inode(struct ocfs2_journal_handle *handle,
struct inode *inode)
{
BUG_ON(!handle);
BUG_ON(!inode);
atomic_inc(&inode->i_count);
/* we're obviously changing it... */
mutex_lock(&inode->i_mutex);
/* sanity check */
BUG_ON(OCFS2_I(inode)->ip_handle);
BUG_ON(!list_empty(&OCFS2_I(inode)->ip_handle_list));
OCFS2_I(inode)->ip_handle = handle;
list_move_tail(&(OCFS2_I(inode)->ip_handle_list), &(handle->inode_list));
}
static void ocfs2_handle_unlock_inodes(struct ocfs2_journal_handle *handle)
{
struct list_head *p, *n;
struct inode *inode;
struct ocfs2_inode_info *oi;
list_for_each_safe(p, n, &handle->inode_list) {
oi = list_entry(p, struct ocfs2_inode_info,
ip_handle_list);
inode = &oi->vfs_inode;
OCFS2_I(inode)->ip_handle = NULL;
list_del_init(&OCFS2_I(inode)->ip_handle_list);
mutex_unlock(&inode->i_mutex);
iput(inode);
}
}
/* This is trivial so we do it out of the main commit
* paths. Beware, it can be called from start_trans too! */
static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle)
{
mlog_entry_void();
BUG_ON(handle->flags & OCFS2_HANDLE_STARTED);
ocfs2_handle_unlock_inodes(handle);
/* You are allowed to add journal locks before the transaction
* has started. */
ocfs2_handle_cleanup_locks(handle->journal, handle);
kfree(handle);
mlog_exit_void();
}
void ocfs2_commit_trans(struct ocfs2_journal_handle *handle)
int ocfs2_commit_trans(struct ocfs2_super *osb,
handle_t *handle)
{
handle_t *jbd_handle;
int retval;
struct ocfs2_journal *journal = handle->journal;
mlog_entry_void();
int ret;
struct ocfs2_journal *journal = osb->journal;
BUG_ON(!handle);
if (!(handle->flags & OCFS2_HANDLE_STARTED)) {
ocfs2_commit_unstarted_handle(handle);
mlog_exit_void();
return;
}
/* release inode semaphores we took during this transaction */
ocfs2_handle_unlock_inodes(handle);
/* ocfs2_extend_trans may have had to call journal_restart
* which will always commit the transaction, but may return
* error for any number of reasons. If this is the case, we
* clear k_handle as it's not valid any more. */
if (handle->k_handle) {
jbd_handle = handle->k_handle;
if (handle->flags & OCFS2_HANDLE_SYNC)
jbd_handle->h_sync = 1;
else
jbd_handle->h_sync = 0;
/* actually stop the transaction. if we've set h_sync,
* it'll have been committed when we return */
retval = journal_stop(jbd_handle);
if (retval < 0) {
mlog_errno(retval);
mlog(ML_ERROR, "Could not commit transaction\n");
BUG();
}
handle->k_handle = NULL; /* it's been free'd in journal_stop */
}
ocfs2_handle_cleanup_locks(journal, handle);
ret = journal_stop(handle);
if (ret < 0)
mlog_errno(ret);
up_read(&journal->j_trans_barrier);
kfree(handle);
mlog_exit_void();
return ret;
}
/*
......@@ -326,20 +180,18 @@ void ocfs2_commit_trans(struct ocfs2_journal_handle *handle)
* good because transaction ids haven't yet been recorded on the
* cluster locks associated with this handle.
*/
int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
int nblocks)
int ocfs2_extend_trans(handle_t *handle, int nblocks)
{
int status;
BUG_ON(!handle);
BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
BUG_ON(!nblocks);
mlog_entry_void();
mlog(0, "Trying to extend transaction by %d blocks\n", nblocks);
status = journal_extend(handle->k_handle, nblocks);
status = journal_extend(handle, nblocks);
if (status < 0) {
mlog_errno(status);
goto bail;
......@@ -347,15 +199,12 @@ int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
if (status > 0) {
mlog(0, "journal_extend failed, trying journal_restart\n");
status = journal_restart(handle->k_handle, nblocks);
status = journal_restart(handle, nblocks);
if (status < 0) {
handle->k_handle = NULL;
mlog_errno(status);
goto bail;
}
handle->max_buffs = nblocks;
} else
handle->max_buffs += nblocks;
}
status = 0;
bail:
......@@ -364,7 +213,7 @@ int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
return status;
}
int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
int ocfs2_journal_access(handle_t *handle,
struct inode *inode,
struct buffer_head *bh,
int type)
......@@ -374,7 +223,6 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
BUG_ON(!inode);
BUG_ON(!handle);
BUG_ON(!bh);
BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n",
(unsigned long long)bh->b_blocknr, type,
......@@ -403,11 +251,11 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
switch (type) {
case OCFS2_JOURNAL_ACCESS_CREATE:
case OCFS2_JOURNAL_ACCESS_WRITE:
status = journal_get_write_access(handle->k_handle, bh);
status = journal_get_write_access(handle, bh);
break;
case OCFS2_JOURNAL_ACCESS_UNDO:
status = journal_get_undo_access(handle->k_handle, bh);
status = journal_get_undo_access(handle, bh);
break;
default:
......@@ -424,17 +272,15 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
return status;
}
int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle,
int ocfs2_journal_dirty(handle_t *handle,
struct buffer_head *bh)
{
int status;
BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
mlog_entry("(bh->b_blocknr=%llu)\n",
(unsigned long long)bh->b_blocknr);
status = journal_dirty_metadata(handle->k_handle, bh);
status = journal_dirty_metadata(handle, bh);
if (status < 0)
mlog(ML_ERROR, "Could not dirty metadata buffer. "
"(bh->b_blocknr=%llu)\n",
......@@ -456,59 +302,6 @@ int ocfs2_journal_dirty_data(handle_t *handle,
return err;
}
/* We always assume you're adding a metadata lock at level 'ex' */
int ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle,
struct inode *inode)
{
int status;
struct ocfs2_journal_lock *lock;
BUG_ON(!inode);
lock = kmem_cache_alloc(ocfs2_lock_cache, GFP_NOFS);
if (!lock) {
status = -ENOMEM;
mlog_errno(-ENOMEM);
goto bail;
}
if (!igrab(inode))
BUG();
lock->jl_inode = inode;
list_add_tail(&(lock->jl_lock_list), &(handle->locks));
handle->num_locks++;
status = 0;
bail:
mlog_exit(status);
return status;
}
static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,
struct ocfs2_journal_handle *handle)
{
struct list_head *p, *n;
struct ocfs2_journal_lock *lock;
struct inode *inode;
list_for_each_safe(p, n, &(handle->locks)) {
lock = list_entry(p, struct ocfs2_journal_lock,
jl_lock_list);
list_del(&lock->jl_lock_list);
handle->num_locks--;
inode = lock->jl_inode;
ocfs2_meta_unlock(inode, 1);
if (atomic_read(&inode->i_count) == 1)
mlog(ML_ERROR,
"Inode %llu, I'm doing a last iput for!",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
iput(inode);
kmem_cache_free(ocfs2_lock_cache, lock);
}
}
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * 5)
void ocfs2_set_journal_params(struct ocfs2_super *osb)
......@@ -562,8 +355,7 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
/* Skip recovery waits here - journal inode metadata never
* changes in a live cluster so it can be considered an
* exception to the rule. */
status = ocfs2_meta_lock_full(inode, NULL, &bh, 1,
OCFS2_META_LOCK_RECOVERY);
status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
if (status < 0) {
if (status != -ERESTARTSYS)
mlog(ML_ERROR, "Could not get lock on journal!\n");
......@@ -1160,8 +952,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
}
SET_INODE_JOURNAL(inode);
status = ocfs2_meta_lock_full(inode, NULL, &bh, 1,
OCFS2_META_LOCK_RECOVERY);
status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
if (status < 0) {
mlog(0, "status returned from ocfs2_meta_lock=%d\n", status);
if (status != -ERESTARTSYS)
......@@ -1350,7 +1141,7 @@ static int ocfs2_trylock_journal(struct ocfs2_super *osb,
SET_INODE_JOURNAL(inode);
flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
status = ocfs2_meta_lock_full(inode, NULL, NULL, 1, flags);
status = ocfs2_meta_lock_full(inode, NULL, 1, flags);
if (status < 0) {
if (status != -EAGAIN)
mlog_errno(status);
......@@ -1433,7 +1224,7 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
}
mutex_lock(&orphan_dir_inode->i_mutex);
status = ocfs2_meta_lock(orphan_dir_inode, NULL, NULL, 0);
status = ocfs2_meta_lock(orphan_dir_inode, NULL, 0);
if (status < 0) {
mlog_errno(status);
goto out;
......
fs/ocfs2/journal.h
浏览文件 @ 651857a1
......@@ -37,7 +37,6 @@ enum ocfs2_journal_state {
struct ocfs2_super;
struct ocfs2_dinode;
struct ocfs2_journal_handle;
struct ocfs2_journal {
enum ocfs2_journal_state j_state; /* Journals current state */
......@@ -133,44 +132,6 @@ static inline void ocfs2_inode_set_new(struct ocfs2_super *osb,
spin_unlock(&trans_inc_lock);
}
extern kmem_cache_t *ocfs2_lock_cache;
struct ocfs2_journal_lock {
struct inode *jl_inode;
struct list_head jl_lock_list;
};
struct ocfs2_journal_handle {
handle_t *k_handle; /* kernel handle. */
struct ocfs2_journal *journal;
u32 flags; /* see flags below. */
int max_buffs; /* Buffs reserved by this handle */
/* The following two fields are for ocfs2_handle_add_lock */
int num_locks;
struct list_head locks; /* A bunch of locks to
* release on commit. This
* should be a list_head */
struct list_head inode_list;
};
#define OCFS2_HANDLE_STARTED 1
/* should we sync-commit this handle? */
#define OCFS2_HANDLE_SYNC 2
static inline int ocfs2_handle_started(struct ocfs2_journal_handle *handle)
{
return handle->flags & OCFS2_HANDLE_STARTED;
}
static inline void ocfs2_handle_set_sync(struct ocfs2_journal_handle *handle, int sync)
{
if (sync)
handle->flags |= OCFS2_HANDLE_SYNC;
else
handle->flags &= ~OCFS2_HANDLE_SYNC;
}
/* Exported only for the journal struct init code in super.c. Do not call. */
void ocfs2_complete_recovery(void *data);
......@@ -231,15 +192,14 @@ static inline void ocfs2_checkpoint_inode(struct inode *inode)
* Transaction Handling:
* Manage the lifetime of a transaction handle.
*
* ocfs2_alloc_handle - Only allocate a handle so we can start putting
* cluster locks on it. To actually change blocks,
* call ocfs2_start_trans with the handle returned
* from this function. You may call ocfs2_commit_trans
* at any time in the lifetime of a handle.
* ocfs2_start_trans - Begin a transaction. Give it an upper estimate of
* the number of blocks that will be changed during
* this handle.
* ocfs2_commit_trans - Complete a handle.
* ocfs2_commit_trans - Complete a handle. It might return -EIO if
* the journal was aborted. The majority of paths don't
* check the return value as an error there comes too
* late to do anything (and will be picked up in a
* later transaction).
* ocfs2_extend_trans - Extend a handle by nblocks credits. This may
* commit the handle to disk in the process, but will
* not release any locks taken during the transaction.
......@@ -249,24 +209,16 @@ static inline void ocfs2_checkpoint_inode(struct inode *inode)
* ocfs2_journal_dirty - Mark a journalled buffer as having dirty data.
* ocfs2_journal_dirty_data - Indicate that a data buffer should go out before
* the current handle commits.
* ocfs2_handle_add_lock - Sometimes we need to delay lock release
* until after a transaction has been completed. Use
* ocfs2_handle_add_lock to indicate that a lock needs
* to be released at the end of that handle. Locks
* will be released in the order that they are added.
* ocfs2_handle_add_inode - Add a locked inode to a transaction.
*/
/* You must always start_trans with a number of buffs > 0, but it's
* perfectly legal to go through an entire transaction without having
* dirtied any buffers. */
struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb);
struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *ocfs2_start_trans(struct ocfs2_super *osb,
int max_buffs);
void ocfs2_commit_trans(struct ocfs2_journal_handle *handle);
int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
int nblocks);
int ocfs2_commit_trans(struct ocfs2_super *osb,
handle_t *handle);
int ocfs2_extend_trans(handle_t *handle, int nblocks);
/*
* Create access is for when we get a newly created buffer and we're
......@@ -283,7 +235,7 @@ int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
#define OCFS2_JOURNAL_ACCESS_WRITE 1
#define OCFS2_JOURNAL_ACCESS_UNDO 2
int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
int ocfs2_journal_access(handle_t *handle,
struct inode *inode,
struct buffer_head *bh,
int type);
......@@ -306,18 +258,10 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
* <modify the bh>
* ocfs2_journal_dirty(handle, bh);
*/
int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle,
int ocfs2_journal_dirty(handle_t *handle,
struct buffer_head *bh);
int ocfs2_journal_dirty_data(handle_t *handle,
struct buffer_head *bh);
int ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle,
struct inode *inode);
/*
* Use this to protect from other processes reading buffer state while
* it's in flight.
*/
void ocfs2_handle_add_inode(struct ocfs2_journal_handle *handle,
struct inode *inode);
/*
* Credit Macros:
......
fs/ocfs2/localalloc.c
浏览文件 @ 651857a1
......@@ -58,19 +58,18 @@ static int ocfs2_local_alloc_find_clear_bits(struct ocfs2_super *osb,
static void ocfs2_clear_local_alloc(struct ocfs2_dinode *alloc);
static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_dinode *alloc,
struct inode *main_bm_inode,
struct buffer_head *main_bm_bh);
static int ocfs2_local_alloc_reserve_for_window(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
struct ocfs2_alloc_context **ac,
struct inode **bitmap_inode,
struct buffer_head **bitmap_bh);
static int ocfs2_local_alloc_new_window(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac);
static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
......@@ -196,7 +195,7 @@ int ocfs2_load_local_alloc(struct ocfs2_super *osb)
void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
{
int status;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle;
struct inode *local_alloc_inode = NULL;
struct buffer_head *bh = NULL;
struct buffer_head *main_bm_bh = NULL;
......@@ -207,7 +206,7 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
mlog_entry_void();
if (osb->local_alloc_state == OCFS2_LA_UNUSED)
goto bail;
goto out;
local_alloc_inode =
ocfs2_get_system_file_inode(osb,
......@@ -216,40 +215,34 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
if (!local_alloc_inode) {
status = -ENOENT;
mlog_errno(status);
goto bail;
goto out;
}
osb->local_alloc_state = OCFS2_LA_DISABLED;
handle = ocfs2_alloc_handle(osb);
if (!handle) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
main_bm_inode = ocfs2_get_system_file_inode(osb,
GLOBAL_BITMAP_SYSTEM_INODE,
OCFS2_INVALID_SLOT);
if (!main_bm_inode) {
status = -EINVAL;
mlog_errno(status);
goto bail;
goto out;
}
ocfs2_handle_add_inode(handle, main_bm_inode);
status = ocfs2_meta_lock(main_bm_inode, handle, &main_bm_bh, 1);
mutex_lock(&main_bm_inode->i_mutex);
status = ocfs2_meta_lock(main_bm_inode, &main_bm_bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
goto out_mutex;
}
/* WINDOW_MOVE_CREDITS is a bit heavy... */
handle = ocfs2_start_trans(osb, handle, OCFS2_WINDOW_MOVE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_WINDOW_MOVE_CREDITS);
if (IS_ERR(handle)) {
mlog_errno(PTR_ERR(handle));
handle = NULL;
goto bail;
goto out_unlock;
}
bh = osb->local_alloc_bh;
......@@ -258,7 +251,7 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
alloc_copy = kmalloc(bh->b_size, GFP_KERNEL);
if (!alloc_copy) {
status = -ENOMEM;
goto bail;
goto out_commit;
}
memcpy(alloc_copy, alloc, bh->b_size);
......@@ -266,7 +259,7 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
goto out_commit;
}
ocfs2_clear_local_alloc(alloc);
......@@ -274,7 +267,7 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
status = ocfs2_journal_dirty(handle, bh);
if (status < 0) {
mlog_errno(status);
goto bail;
goto out_commit;
}
brelse(bh);
......@@ -286,16 +279,20 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
if (status < 0)
mlog_errno(status);
bail:
if (handle)
ocfs2_commit_trans(handle);
out_commit:
ocfs2_commit_trans(osb, handle);
out_unlock:
if (main_bm_bh)
brelse(main_bm_bh);
if (main_bm_inode)
iput(main_bm_inode);
ocfs2_meta_unlock(main_bm_inode, 1);
out_mutex:
mutex_unlock(&main_bm_inode->i_mutex);
iput(main_bm_inode);
out:
if (local_alloc_inode)
iput(local_alloc_inode);
......@@ -385,61 +382,59 @@ int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
struct ocfs2_dinode *alloc)
{
int status;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle;
struct buffer_head *main_bm_bh = NULL;
struct inode *main_bm_inode = NULL;
struct inode *main_bm_inode;
mlog_entry_void();
handle = ocfs2_alloc_handle(osb);
if (!handle) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
main_bm_inode = ocfs2_get_system_file_inode(osb,
GLOBAL_BITMAP_SYSTEM_INODE,
OCFS2_INVALID_SLOT);
if (!main_bm_inode) {
status = -EINVAL;
mlog_errno(status);
goto bail;
goto out;
}
ocfs2_handle_add_inode(handle, main_bm_inode);
status = ocfs2_meta_lock(main_bm_inode, handle, &main_bm_bh, 1);
mutex_lock(&main_bm_inode->i_mutex);
status = ocfs2_meta_lock(main_bm_inode, &main_bm_bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
goto out_mutex;
}
handle = ocfs2_start_trans(osb, handle, OCFS2_WINDOW_MOVE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_WINDOW_MOVE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
mlog_errno(status);
goto bail;
goto out_unlock;
}
/* we want the bitmap change to be recorded on disk asap */
ocfs2_handle_set_sync(handle, 1);
handle->h_sync = 1;
status = ocfs2_sync_local_to_main(osb, handle, alloc,
main_bm_inode, main_bm_bh);
if (status < 0)
mlog_errno(status);
bail:
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
out_unlock:
ocfs2_meta_unlock(main_bm_inode, 1);
out_mutex:
mutex_unlock(&main_bm_inode->i_mutex);
if (main_bm_bh)
brelse(main_bm_bh);
if (main_bm_inode)
iput(main_bm_inode);
iput(main_bm_inode);
out:
mlog_exit(status);
return status;
}
......@@ -452,7 +447,6 @@ int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
* our own in order to shift windows.
*/
int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
struct ocfs2_journal_handle *passed_handle,
u32 bits_wanted,
struct ocfs2_alloc_context *ac)
{
......@@ -463,9 +457,7 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
mlog_entry_void();
BUG_ON(!passed_handle);
BUG_ON(!ac);
BUG_ON(passed_handle->flags & OCFS2_HANDLE_STARTED);
local_alloc_inode =
ocfs2_get_system_file_inode(osb,
......@@ -476,7 +468,11 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
mlog_errno(status);
goto bail;
}
ocfs2_handle_add_inode(passed_handle, local_alloc_inode);
mutex_lock(&local_alloc_inode->i_mutex);
ac->ac_inode = local_alloc_inode;
ac->ac_which = OCFS2_AC_USE_LOCAL;
if (osb->local_alloc_state != OCFS2_LA_ENABLED) {
status = -ENOSPC;
......@@ -515,21 +511,17 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
}
}
ac->ac_inode = igrab(local_alloc_inode);
get_bh(osb->local_alloc_bh);
ac->ac_bh = osb->local_alloc_bh;
ac->ac_which = OCFS2_AC_USE_LOCAL;
status = 0;
bail:
if (local_alloc_inode)
iput(local_alloc_inode);
mlog_exit(status);
return status;
}
int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 min_bits,
u32 *bit_off,
......@@ -707,7 +699,7 @@ static void ocfs2_verify_zero_bits(unsigned long *bitmap,
* passed is used for caching.
*/
static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_dinode *alloc,
struct inode *main_bm_inode,
struct buffer_head *main_bm_bh)
......@@ -778,7 +770,6 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
}
static int ocfs2_local_alloc_reserve_for_window(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
struct ocfs2_alloc_context **ac,
struct inode **bitmap_inode,
struct buffer_head **bitmap_bh)
......@@ -792,7 +783,6 @@ static int ocfs2_local_alloc_reserve_for_window(struct ocfs2_super *osb,
goto bail;
}
(*ac)->ac_handle = handle;
(*ac)->ac_bits_wanted = ocfs2_local_alloc_window_bits(osb);
status = ocfs2_reserve_cluster_bitmap_bits(osb, *ac);
......@@ -821,7 +811,7 @@ static int ocfs2_local_alloc_reserve_for_window(struct ocfs2_super *osb,
* pass it the bitmap lock in lock_bh if you have it.
*/
static int ocfs2_local_alloc_new_window(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac)
{
int status = 0;
......@@ -888,23 +878,15 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
int status = 0;
struct buffer_head *main_bm_bh = NULL;
struct inode *main_bm_inode = NULL;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
struct ocfs2_dinode *alloc;
struct ocfs2_dinode *alloc_copy = NULL;
struct ocfs2_alloc_context *ac = NULL;
mlog_entry_void();
handle = ocfs2_alloc_handle(osb);
if (!handle) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
/* This will lock the main bitmap for us. */
status = ocfs2_local_alloc_reserve_for_window(osb,
handle,
&ac,
&main_bm_inode,
&main_bm_bh);
......@@ -914,7 +896,7 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
goto bail;
}
handle = ocfs2_start_trans(osb, handle, OCFS2_WINDOW_MOVE_CREDITS);
handle = ocfs2_start_trans(osb, OCFS2_WINDOW_MOVE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
......@@ -972,7 +954,7 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
status = 0;
bail:
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
if (main_bm_bh)
brelse(main_bm_bh);
......
fs/ocfs2/localalloc.h
浏览文件 @ 651857a1
......@@ -42,12 +42,11 @@ int ocfs2_alloc_should_use_local(struct ocfs2_super *osb,
struct ocfs2_alloc_context;
int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
struct ocfs2_journal_handle *passed_handle,
u32 bits_wanted,
struct ocfs2_alloc_context *ac);
int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 min_bits,
u32 *bit_off,
......
fs/ocfs2/mmap.c
浏览文件 @ 651857a1
......@@ -82,6 +82,8 @@ static struct vm_operations_struct ocfs2_file_vm_ops = {
int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)
{
int ret = 0, lock_level = 0;
/* We don't want to support shared writable mappings yet. */
if (((vma->vm_flags & VM_SHARED) || (vma->vm_flags & VM_MAYSHARE))
&& ((vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_MAYWRITE))) {
......@@ -91,7 +93,14 @@ int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)
return -EINVAL;
}
file_accessed(file);
ret = ocfs2_meta_lock_atime(file->f_dentry->d_inode,
file->f_vfsmnt, &lock_level);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
ocfs2_meta_unlock(file->f_dentry->d_inode, lock_level);
out:
vma->vm_ops = &ocfs2_file_vm_ops;
return 0;
}
......
fs/ocfs2/namei.c
浏览文件 @ 651857a1
此差异已折叠。
fs/ocfs2/namei.h
浏览文件 @ 651857a1
......@@ -39,7 +39,7 @@ struct buffer_head *ocfs2_find_entry(const char *name,
struct inode *dir,
struct ocfs2_dir_entry **res_dir);
int ocfs2_orphan_del(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct inode *orphan_dir_inode,
struct inode *inode,
struct buffer_head *orphan_dir_bh);
......
fs/ocfs2/ocfs2.h
浏览文件 @ 651857a1
......@@ -34,6 +34,7 @@
#include <linux/workqueue.h>
#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/jbd.h>
#include "cluster/nodemanager.h"
#include "cluster/heartbeat.h"
......@@ -179,9 +180,9 @@ enum ocfs2_mount_options
#define OCFS2_OSB_SOFT_RO 0x0001
#define OCFS2_OSB_HARD_RO 0x0002
#define OCFS2_OSB_ERROR_FS 0x0004
#define OCFS2_DEFAULT_ATIME_QUANTUM 60
struct ocfs2_journal;
struct ocfs2_journal_handle;
struct ocfs2_super
{
struct task_struct *commit_task;
......@@ -218,6 +219,7 @@ struct ocfs2_super
unsigned long osb_flags;
unsigned long s_mount_opt;
unsigned int s_atime_quantum;
u16 max_slots;
s16 node_num;
......
fs/ocfs2/suballoc.c
浏览文件 @ 651857a1
......@@ -49,7 +49,7 @@
static inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg);
static inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe);
static inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl);
static int ocfs2_block_group_fill(struct ocfs2_journal_handle *handle,
static int ocfs2_block_group_fill(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *bg_bh,
u64 group_blkno,
......@@ -59,9 +59,6 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
struct inode *alloc_inode,
struct buffer_head *bh);
static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac);
static int ocfs2_cluster_group_search(struct inode *inode,
struct buffer_head *group_bh,
u32 bits_wanted, u32 min_bits,
......@@ -72,6 +69,7 @@ static int ocfs2_block_group_search(struct inode *inode,
u16 *bit_off, u16 *bits_found);
static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac,
handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
......@@ -79,20 +77,20 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
u64 *bg_blkno);
static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh,
int nr);
static inline int ocfs2_block_group_set_bits(struct ocfs2_journal_handle *handle,
static inline int ocfs2_block_group_set_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
unsigned int bit_off,
unsigned int num_bits);
static inline int ocfs2_block_group_clear_bits(struct ocfs2_journal_handle *handle,
static inline int ocfs2_block_group_clear_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
unsigned int bit_off,
unsigned int num_bits);
static int ocfs2_relink_block_group(struct ocfs2_journal_handle *handle,
static int ocfs2_relink_block_group(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *fe_bh,
struct buffer_head *bg_bh,
......@@ -100,7 +98,7 @@ static int ocfs2_relink_block_group(struct ocfs2_journal_handle *handle,
u16 chain);
static inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg,
u32 wanted);
static int ocfs2_free_suballoc_bits(struct ocfs2_journal_handle *handle,
static int ocfs2_free_suballoc_bits(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *alloc_bh,
unsigned int start_bit,
......@@ -120,8 +118,16 @@ static inline void ocfs2_block_to_cluster_group(struct inode *inode,
void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac)
{
if (ac->ac_inode)
iput(ac->ac_inode);
struct inode *inode = ac->ac_inode;
if (inode) {
if (ac->ac_which != OCFS2_AC_USE_LOCAL)
ocfs2_meta_unlock(inode, 1);
mutex_unlock(&inode->i_mutex);
iput(inode);
}
if (ac->ac_bh)
brelse(ac->ac_bh);
kfree(ac);
......@@ -190,7 +196,7 @@ static int ocfs2_check_group_descriptor(struct super_block *sb,
return 0;
}
static int ocfs2_block_group_fill(struct ocfs2_journal_handle *handle,
static int ocfs2_block_group_fill(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *bg_bh,
u64 group_blkno,
......@@ -273,7 +279,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
struct ocfs2_chain_list *cl;
struct ocfs2_alloc_context *ac = NULL;
struct ocfs2_journal_handle *handle = NULL;
handle_t *handle = NULL;
u32 bit_off, num_bits;
u16 alloc_rec;
u64 bg_blkno;
......@@ -284,16 +290,8 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
mlog_entry_void();
handle = ocfs2_alloc_handle(osb);
if (!handle) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
cl = &fe->id2.i_chain;
status = ocfs2_reserve_clusters(osb,
handle,
le16_to_cpu(cl->cl_cpg),
&ac);
if (status < 0) {
......@@ -304,7 +302,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
credits = ocfs2_calc_group_alloc_credits(osb->sb,
le16_to_cpu(cl->cl_cpg));
handle = ocfs2_start_trans(osb, handle, credits);
handle = ocfs2_start_trans(osb, credits);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
......@@ -389,7 +387,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
status = 0;
bail:
if (handle)
ocfs2_commit_trans(handle);
ocfs2_commit_trans(osb, handle);
if (ac)
ocfs2_free_alloc_context(ac);
......@@ -402,27 +400,38 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
}
static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac)
struct ocfs2_alloc_context *ac,
int type,
u32 slot)
{
int status;
u32 bits_wanted = ac->ac_bits_wanted;
struct inode *alloc_inode = ac->ac_inode;
struct inode *alloc_inode;
struct buffer_head *bh = NULL;
struct ocfs2_journal_handle *handle = ac->ac_handle;
struct ocfs2_dinode *fe;
u32 free_bits;
mlog_entry_void();
BUG_ON(handle->flags & OCFS2_HANDLE_STARTED);
alloc_inode = ocfs2_get_system_file_inode(osb, type, slot);
if (!alloc_inode) {
mlog_errno(-EINVAL);
return -EINVAL;
}
ocfs2_handle_add_inode(handle, alloc_inode);
status = ocfs2_meta_lock(alloc_inode, handle, &bh, 1);
mutex_lock(&alloc_inode->i_mutex);
status = ocfs2_meta_lock(alloc_inode, &bh, 1);
if (status < 0) {
mutex_unlock(&alloc_inode->i_mutex);
iput(alloc_inode);
mlog_errno(status);
goto bail;
return status;
}
ac->ac_inode = alloc_inode;
fe = (struct ocfs2_dinode *) bh->b_data;
if (!OCFS2_IS_VALID_DINODE(fe)) {
OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe);
......@@ -473,12 +482,11 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
}
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
struct ocfs2_dinode *fe,
struct ocfs2_alloc_context **ac)
{
int status;
struct inode *alloc_inode = NULL;
u32 slot;
*ac = kcalloc(1, sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
......@@ -488,28 +496,18 @@ int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
}
(*ac)->ac_bits_wanted = ocfs2_extend_meta_needed(fe);
(*ac)->ac_handle = handle;
(*ac)->ac_which = OCFS2_AC_USE_META;
#ifndef OCFS2_USE_ALL_METADATA_SUBALLOCATORS
alloc_inode = ocfs2_get_system_file_inode(osb,
EXTENT_ALLOC_SYSTEM_INODE,
0);
slot = 0;
#else
alloc_inode = ocfs2_get_system_file_inode(osb,
EXTENT_ALLOC_SYSTEM_INODE,
osb->slot_num);
slot = osb->slot_num;
#endif
if (!alloc_inode) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
(*ac)->ac_inode = igrab(alloc_inode);
(*ac)->ac_group_search = ocfs2_block_group_search;
status = ocfs2_reserve_suballoc_bits(osb, (*ac));
status = ocfs2_reserve_suballoc_bits(osb, (*ac),
EXTENT_ALLOC_SYSTEM_INODE, slot);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
......@@ -523,19 +521,14 @@ int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
*ac = NULL;
}
if (alloc_inode)
iput(alloc_inode);
mlog_exit(status);
return status;
}
int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
struct ocfs2_alloc_context **ac)
{
int status;
struct inode *alloc_inode = NULL;
*ac = kcalloc(1, sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
......@@ -545,22 +538,13 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
}
(*ac)->ac_bits_wanted = 1;
(*ac)->ac_handle = handle;
(*ac)->ac_which = OCFS2_AC_USE_INODE;
alloc_inode = ocfs2_get_system_file_inode(osb,
INODE_ALLOC_SYSTEM_INODE,
osb->slot_num);
if (!alloc_inode) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
(*ac)->ac_inode = igrab(alloc_inode);
(*ac)->ac_group_search = ocfs2_block_group_search;
status = ocfs2_reserve_suballoc_bits(osb, *ac);
status = ocfs2_reserve_suballoc_bits(osb, *ac,
INODE_ALLOC_SYSTEM_INODE,
osb->slot_num);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
......@@ -574,9 +558,6 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
*ac = NULL;
}
if (alloc_inode)
iput(alloc_inode);
mlog_exit(status);
return status;
}
......@@ -588,20 +569,17 @@ int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb,
{
int status;
ac->ac_inode = ocfs2_get_system_file_inode(osb,
GLOBAL_BITMAP_SYSTEM_INODE,
OCFS2_INVALID_SLOT);
if (!ac->ac_inode) {
status = -EINVAL;
mlog(ML_ERROR, "Could not get bitmap inode!\n");
goto bail;
}
ac->ac_which = OCFS2_AC_USE_MAIN;
ac->ac_group_search = ocfs2_cluster_group_search;
status = ocfs2_reserve_suballoc_bits(osb, ac);
if (status < 0 && status != -ENOSPC)
status = ocfs2_reserve_suballoc_bits(osb, ac,
GLOBAL_BITMAP_SYSTEM_INODE,
OCFS2_INVALID_SLOT);
if (status < 0 && status != -ENOSPC) {
mlog_errno(status);
goto bail;
}
bail:
return status;
}
......@@ -610,7 +588,6 @@ int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb,
* use so we figure it out for them, but unfortunately this clutters
* things a bit. */
int ocfs2_reserve_clusters(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
u32 bits_wanted,
struct ocfs2_alloc_context **ac)
{
......@@ -618,8 +595,6 @@ int ocfs2_reserve_clusters(struct ocfs2_super *osb,
mlog_entry_void();
BUG_ON(!handle);
*ac = kcalloc(1, sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
status = -ENOMEM;
......@@ -628,12 +603,10 @@ int ocfs2_reserve_clusters(struct ocfs2_super *osb,
}
(*ac)->ac_bits_wanted = bits_wanted;
(*ac)->ac_handle = handle;
status = -ENOSPC;
if (ocfs2_alloc_should_use_local(osb, bits_wanted)) {
status = ocfs2_reserve_local_alloc_bits(osb,
handle,
bits_wanted,
*ac);
if ((status < 0) && (status != -ENOSPC)) {
......@@ -774,7 +747,7 @@ static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
return status;
}
static inline int ocfs2_block_group_set_bits(struct ocfs2_journal_handle *handle,
static inline int ocfs2_block_group_set_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
......@@ -845,7 +818,7 @@ static inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl)
return best;
}
static int ocfs2_relink_block_group(struct ocfs2_journal_handle *handle,
static int ocfs2_relink_block_group(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *fe_bh,
struct buffer_head *bg_bh,
......@@ -1025,7 +998,7 @@ static int ocfs2_block_group_search(struct inode *inode,
}
static int ocfs2_alloc_dinode_update_counts(struct inode *inode,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct buffer_head *di_bh,
u32 num_bits,
u16 chain)
......@@ -1055,6 +1028,7 @@ static int ocfs2_alloc_dinode_update_counts(struct inode *inode,
}
static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
......@@ -1067,7 +1041,6 @@ static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
struct buffer_head *group_bh = NULL;
struct ocfs2_group_desc *gd;
struct inode *alloc_inode = ac->ac_inode;
struct ocfs2_journal_handle *handle = ac->ac_handle;
ret = ocfs2_read_block(OCFS2_SB(alloc_inode->i_sb), gd_blkno,
&group_bh, OCFS2_BH_CACHED, alloc_inode);
......@@ -1115,6 +1088,7 @@ static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
}
static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
......@@ -1126,7 +1100,6 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
u16 chain, tmp_bits;
u32 tmp_used;
u64 next_group;
struct ocfs2_journal_handle *handle = ac->ac_handle;
struct inode *alloc_inode = ac->ac_inode;
struct buffer_head *group_bh = NULL;
struct buffer_head *prev_group_bh = NULL;
......@@ -1272,6 +1245,7 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
/* will give out up to bits_wanted contiguous bits. */
static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac,
handle_t *handle,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
......@@ -1313,8 +1287,8 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
* by jumping straight to the most recently used
* allocation group. This helps us mantain some
* contiguousness across allocations. */
status = ocfs2_search_one_group(ac, bits_wanted, min_bits,
bit_off, num_bits,
status = ocfs2_search_one_group(ac, handle, bits_wanted,
min_bits, bit_off, num_bits,
hint_blkno, &bits_left);
if (!status) {
/* Be careful to update *bg_blkno here as the
......@@ -1336,7 +1310,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
ac->ac_chain = victim;
ac->ac_allow_chain_relink = 1;
status = ocfs2_search_chain(ac, bits_wanted, min_bits, bit_off,
status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, bit_off,
num_bits, bg_blkno, &bits_left);
if (!status)
goto set_hint;
......@@ -1360,7 +1334,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
continue;
ac->ac_chain = i;
status = ocfs2_search_chain(ac, bits_wanted, min_bits,
status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits,
bit_off, num_bits, bg_blkno,
&bits_left);
if (!status)
......@@ -1388,7 +1362,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
}
int ocfs2_claim_metadata(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 bits_wanted,
u16 *suballoc_bit_start,
......@@ -1401,10 +1375,10 @@ int ocfs2_claim_metadata(struct ocfs2_super *osb,
BUG_ON(!ac);
BUG_ON(ac->ac_bits_wanted < (ac->ac_bits_given + bits_wanted));
BUG_ON(ac->ac_which != OCFS2_AC_USE_META);
BUG_ON(ac->ac_handle != handle);
status = ocfs2_claim_suballoc_bits(osb,
ac,
handle,
bits_wanted,
1,
suballoc_bit_start,
......@@ -1425,7 +1399,7 @@ int ocfs2_claim_metadata(struct ocfs2_super *osb,
}
int ocfs2_claim_new_inode(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u16 *suballoc_bit,
u64 *fe_blkno)
......@@ -1440,10 +1414,10 @@ int ocfs2_claim_new_inode(struct ocfs2_super *osb,
BUG_ON(ac->ac_bits_given != 0);
BUG_ON(ac->ac_bits_wanted != 1);
BUG_ON(ac->ac_which != OCFS2_AC_USE_INODE);
BUG_ON(ac->ac_handle != handle);
status = ocfs2_claim_suballoc_bits(osb,
ac,
handle,
1,
1,
suballoc_bit,
......@@ -1528,7 +1502,7 @@ static inline void ocfs2_block_to_cluster_group(struct inode *inode,
* of any size.
*/
int ocfs2_claim_clusters(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 min_clusters,
u32 *cluster_start,
......@@ -1546,7 +1520,6 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL
&& ac->ac_which != OCFS2_AC_USE_MAIN);
BUG_ON(ac->ac_handle != handle);
if (ac->ac_which == OCFS2_AC_USE_LOCAL) {
status = ocfs2_claim_local_alloc_bits(osb,
......@@ -1572,6 +1545,7 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
status = ocfs2_claim_suballoc_bits(osb,
ac,
handle,
bits_wanted,
min_clusters,
&bg_bit_off,
......@@ -1598,7 +1572,7 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
return status;
}
static inline int ocfs2_block_group_clear_bits(struct ocfs2_journal_handle *handle,
static inline int ocfs2_block_group_clear_bits(handle_t *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
struct buffer_head *group_bh,
......@@ -1653,7 +1627,7 @@ static inline int ocfs2_block_group_clear_bits(struct ocfs2_journal_handle *hand
/*
* expects the suballoc inode to already be locked.
*/
static int ocfs2_free_suballoc_bits(struct ocfs2_journal_handle *handle,
static int ocfs2_free_suballoc_bits(handle_t *handle,
struct inode *alloc_inode,
struct buffer_head *alloc_bh,
unsigned int start_bit,
......@@ -1737,7 +1711,7 @@ static inline u64 ocfs2_which_suballoc_group(u64 block, unsigned int bit)
return group;
}
int ocfs2_free_dinode(struct ocfs2_journal_handle *handle,
int ocfs2_free_dinode(handle_t *handle,
struct inode *inode_alloc_inode,
struct buffer_head *inode_alloc_bh,
struct ocfs2_dinode *di)
......@@ -1750,7 +1724,7 @@ int ocfs2_free_dinode(struct ocfs2_journal_handle *handle,
inode_alloc_bh, bit, bg_blkno, 1);
}
int ocfs2_free_extent_block(struct ocfs2_journal_handle *handle,
int ocfs2_free_extent_block(handle_t *handle,
struct inode *eb_alloc_inode,
struct buffer_head *eb_alloc_bh,
struct ocfs2_extent_block *eb)
......@@ -1763,7 +1737,7 @@ int ocfs2_free_extent_block(struct ocfs2_journal_handle *handle,
bit, bg_blkno, 1);
}
int ocfs2_free_clusters(struct ocfs2_journal_handle *handle,
int ocfs2_free_clusters(handle_t *handle,
struct inode *bitmap_inode,
struct buffer_head *bitmap_bh,
u64 start_blk,
......
fs/ocfs2/suballoc.h
浏览文件 @ 651857a1
......@@ -43,7 +43,6 @@ struct ocfs2_alloc_context {
#define OCFS2_AC_USE_INODE 3
#define OCFS2_AC_USE_META 4
u32 ac_which;
struct ocfs2_journal_handle *ac_handle;
/* these are used by the chain search */
u16 ac_chain;
......@@ -60,45 +59,42 @@ static inline int ocfs2_alloc_context_bits_left(struct ocfs2_alloc_context *ac)
}
int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
struct ocfs2_dinode *fe,
struct ocfs2_alloc_context **ac);
int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
struct ocfs2_alloc_context **ac);
int ocfs2_reserve_clusters(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
u32 bits_wanted,
struct ocfs2_alloc_context **ac);
int ocfs2_claim_metadata(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 bits_wanted,
u16 *suballoc_bit_start,
u32 *num_bits,
u64 *blkno_start);
int ocfs2_claim_new_inode(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u16 *suballoc_bit,
u64 *fe_blkno);
int ocfs2_claim_clusters(struct ocfs2_super *osb,
struct ocfs2_journal_handle *handle,
handle_t *handle,
struct ocfs2_alloc_context *ac,
u32 min_clusters,
u32 *cluster_start,
u32 *num_clusters);
int ocfs2_free_dinode(struct ocfs2_journal_handle *handle,
int ocfs2_free_dinode(handle_t *handle,
struct inode *inode_alloc_inode,
struct buffer_head *inode_alloc_bh,
struct ocfs2_dinode *di);
int ocfs2_free_extent_block(struct ocfs2_journal_handle *handle,
int ocfs2_free_extent_block(handle_t *handle,
struct inode *eb_alloc_inode,
struct buffer_head *eb_alloc_bh,
struct ocfs2_extent_block *eb);
int ocfs2_free_clusters(struct ocfs2_journal_handle *handle,
int ocfs2_free_clusters(handle_t *handle,
struct inode *bitmap_inode,
struct buffer_head *bitmap_bh,
u64 start_blk,
......
fs/ocfs2/super.c
浏览文件 @ 651857a1
......@@ -70,8 +70,6 @@
static kmem_cache_t *ocfs2_inode_cachep = NULL;
kmem_cache_t *ocfs2_lock_cache = NULL;
/* OCFS2 needs to schedule several differnt types of work which
* require cluster locking, disk I/O, recovery waits, etc. Since these
* types of work tend to be heavy we avoid using the kernel events
......@@ -141,6 +139,7 @@ enum {
Opt_hb_local,
Opt_data_ordered,
Opt_data_writeback,
Opt_atime_quantum,
Opt_err,
};
......@@ -154,6 +153,7 @@ static match_table_t tokens = {
{Opt_hb_local, OCFS2_HB_LOCAL},
{Opt_data_ordered, "data=ordered"},
{Opt_data_writeback, "data=writeback"},
{Opt_atime_quantum, "atime_quantum=%u"},
{Opt_err, NULL}
};
......@@ -707,6 +707,7 @@ static int ocfs2_parse_options(struct super_block *sb,
while ((p = strsep(&options, ",")) != NULL) {
int token, option;
substring_t args[MAX_OPT_ARGS];
struct ocfs2_super * osb = OCFS2_SB(sb);
if (!*p)
continue;
......@@ -747,6 +748,16 @@ static int ocfs2_parse_options(struct super_block *sb,
case Opt_data_writeback:
*mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
break;
case Opt_atime_quantum:
if (match_int(&args[0], &option)) {
status = 0;
goto bail;
}
if (option >= 0)
osb->s_atime_quantum = option;
else
osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
break;
default:
mlog(ML_ERROR,
"Unrecognized mount option \"%s\" "
......@@ -867,7 +878,7 @@ static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
goto bail;
}
status = ocfs2_meta_lock(inode, NULL, &bh, 0);
status = ocfs2_meta_lock(inode, &bh, 0);
if (status < 0) {
mlog_errno(status);
goto bail;
......@@ -914,9 +925,7 @@ static void ocfs2_inode_init_once(void *data,
oi->ip_open_count = 0;
spin_lock_init(&oi->ip_lock);
ocfs2_extent_map_init(&oi->vfs_inode);
INIT_LIST_HEAD(&oi->ip_handle_list);
INIT_LIST_HEAD(&oi->ip_io_markers);
oi->ip_handle = NULL;
oi->ip_created_trans = 0;
oi->ip_last_trans = 0;
oi->ip_dir_start_lookup = 0;
......@@ -948,14 +957,6 @@ static int ocfs2_initialize_mem_caches(void)
if (!ocfs2_inode_cachep)
return -ENOMEM;
ocfs2_lock_cache = kmem_cache_create("ocfs2_lock",
sizeof(struct ocfs2_journal_lock),
0,
SLAB_HWCACHE_ALIGN,
NULL, NULL);
if (!ocfs2_lock_cache)
return -ENOMEM;
return 0;
}
......@@ -963,11 +964,8 @@ static void ocfs2_free_mem_caches(void)
{
if (ocfs2_inode_cachep)
kmem_cache_destroy(ocfs2_inode_cachep);
if (ocfs2_lock_cache)
kmem_cache_destroy(ocfs2_lock_cache);
ocfs2_inode_cachep = NULL;
ocfs2_lock_cache = NULL;
}
static int ocfs2_get_sector(struct super_block *sb,
......@@ -1280,6 +1278,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
init_waitqueue_head(&osb->checkpoint_event);
atomic_set(&osb->needs_checkpoint, 0);
osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
osb->node_num = O2NM_INVALID_NODE_NUM;
osb->slot_num = OCFS2_INVALID_SLOT;
......
fs/ocfs2/symlink.c
浏览文件 @ 651857a1
......@@ -126,6 +126,10 @@ static int ocfs2_readlink(struct dentry *dentry,
goto out;
}
/*
* Without vfsmount we can't update atime now,
* but we will update atime here ultimately.
*/
ret = vfs_readlink(dentry, buffer, buflen, link);
brelse(bh);
......
mm/filemap.c
浏览文件 @ 651857a1
......@@ -1893,6 +1893,7 @@ int should_remove_suid(struct dentry *dentry)
return 0;
}
EXPORT_SYMBOL(should_remove_suid);
int __remove_suid(struct dentry *dentry, int kill)
{
......
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