diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index fd389935ecd1629f402128518f63fd7d851e2a84..3ec0e46de95fc8dece943c4d753eb401e6343cad 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -4,6 +4,7 @@ * Copyright (C) 2001-2003 Andreas Gruenbacher, */ +#include #include "ext4_jbd2.h" #include "ext4.h" #include "xattr.h" @@ -232,6 +233,9 @@ ext4_set_acl(struct inode *inode, struct posix_acl *acl, int type) handle_t *handle; int error, retries = 0; + error = dquot_initialize(inode); + if (error) + return error; retry: handle = ext4_journal_start(inode, EXT4_HT_XATTR, ext4_jbd2_credits_xattr(inode)); diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 8e8046104f4d8a945f2eae5e3bca7cb214d3cbb8..32191548abed3b02eb107bfd5a23196f40200a70 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2523,7 +2523,6 @@ extern int ext4_search_dir(struct buffer_head *bh, int buf_size, struct inode *dir, struct ext4_filename *fname, - const struct qstr *d_name, unsigned int offset, struct ext4_dir_entry_2 **res_dir); extern int ext4_generic_delete_entry(handle_t *handle, @@ -3007,7 +3006,6 @@ extern int htree_inlinedir_to_tree(struct file *dir_file, int *has_inline_data); extern struct buffer_head *ext4_find_inline_entry(struct inode *dir, struct ext4_filename *fname, - const struct qstr *d_name, struct ext4_dir_entry_2 **res_dir, int *has_inline_data); extern int ext4_delete_inline_entry(handle_t *handle, diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 2a97dff87b961771383c33e97dc57997eb6586fb..3e36508610b796b6612cc1e670a0fc2c8c3c282a 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3413,13 +3413,13 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, struct ext4_sb_info *sbi; struct ext4_extent_header *eh; struct ext4_map_blocks split_map; - struct ext4_extent zero_ex; + struct ext4_extent zero_ex1, zero_ex2; struct ext4_extent *ex, *abut_ex; ext4_lblk_t ee_block, eof_block; unsigned int ee_len, depth, map_len = map->m_len; int allocated = 0, max_zeroout = 0; int err = 0; - int split_flag = 0; + int split_flag = EXT4_EXT_DATA_VALID2; ext_debug("ext4_ext_convert_to_initialized: inode %lu, logical" "block %llu, max_blocks %u\n", inode->i_ino, @@ -3436,7 +3436,8 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, ex = path[depth].p_ext; ee_block = le32_to_cpu(ex->ee_block); ee_len = ext4_ext_get_actual_len(ex); - zero_ex.ee_len = 0; + zero_ex1.ee_len = 0; + zero_ex2.ee_len = 0; trace_ext4_ext_convert_to_initialized_enter(inode, map, ex); @@ -3576,62 +3577,52 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, if (ext4_encrypted_inode(inode)) max_zeroout = 0; - /* If extent is less than s_max_zeroout_kb, zeroout directly */ - if (max_zeroout && (ee_len <= max_zeroout)) { - err = ext4_ext_zeroout(inode, ex); - if (err) - goto out; - zero_ex.ee_block = ex->ee_block; - zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex)); - ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex)); - - err = ext4_ext_get_access(handle, inode, path + depth); - if (err) - goto out; - ext4_ext_mark_initialized(ex); - ext4_ext_try_to_merge(handle, inode, path, ex); - err = ext4_ext_dirty(handle, inode, path + path->p_depth); - goto out; - } - /* - * four cases: + * five cases: * 1. split the extent into three extents. - * 2. split the extent into two extents, zeroout the first half. - * 3. split the extent into two extents, zeroout the second half. + * 2. split the extent into two extents, zeroout the head of the first + * extent. + * 3. split the extent into two extents, zeroout the tail of the second + * extent. * 4. split the extent into two extents with out zeroout. + * 5. no splitting needed, just possibly zeroout the head and / or the + * tail of the extent. */ split_map.m_lblk = map->m_lblk; split_map.m_len = map->m_len; - if (max_zeroout && (allocated > map->m_len)) { + if (max_zeroout && (allocated > split_map.m_len)) { if (allocated <= max_zeroout) { - /* case 3 */ - zero_ex.ee_block = - cpu_to_le32(map->m_lblk); - zero_ex.ee_len = cpu_to_le16(allocated); - ext4_ext_store_pblock(&zero_ex, - ext4_ext_pblock(ex) + map->m_lblk - ee_block); - err = ext4_ext_zeroout(inode, &zero_ex); + /* case 3 or 5 */ + zero_ex1.ee_block = + cpu_to_le32(split_map.m_lblk + + split_map.m_len); + zero_ex1.ee_len = + cpu_to_le16(allocated - split_map.m_len); + ext4_ext_store_pblock(&zero_ex1, + ext4_ext_pblock(ex) + split_map.m_lblk + + split_map.m_len - ee_block); + err = ext4_ext_zeroout(inode, &zero_ex1); if (err) goto out; - split_map.m_lblk = map->m_lblk; split_map.m_len = allocated; - } else if (map->m_lblk - ee_block + map->m_len < max_zeroout) { - /* case 2 */ - if (map->m_lblk != ee_block) { - zero_ex.ee_block = ex->ee_block; - zero_ex.ee_len = cpu_to_le16(map->m_lblk - + } + if (split_map.m_lblk - ee_block + split_map.m_len < + max_zeroout) { + /* case 2 or 5 */ + if (split_map.m_lblk != ee_block) { + zero_ex2.ee_block = ex->ee_block; + zero_ex2.ee_len = cpu_to_le16(split_map.m_lblk - ee_block); - ext4_ext_store_pblock(&zero_ex, + ext4_ext_store_pblock(&zero_ex2, ext4_ext_pblock(ex)); - err = ext4_ext_zeroout(inode, &zero_ex); + err = ext4_ext_zeroout(inode, &zero_ex2); if (err) goto out; } + split_map.m_len += split_map.m_lblk - ee_block; split_map.m_lblk = ee_block; - split_map.m_len = map->m_lblk - ee_block + map->m_len; allocated = map->m_len; } } @@ -3642,8 +3633,11 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, err = 0; out: /* If we have gotten a failure, don't zero out status tree */ - if (!err) - err = ext4_zeroout_es(inode, &zero_ex); + if (!err) { + err = ext4_zeroout_es(inode, &zero_ex1); + if (!err) + err = ext4_zeroout_es(inode, &zero_ex2); + } return err ? err : allocated; } @@ -4883,6 +4877,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, /* Zero out partial block at the edges of the range */ ret = ext4_zero_partial_blocks(handle, inode, offset, len); + if (ret >= 0) + ext4_update_inode_fsync_trans(handle, inode, 1); if (file->f_flags & O_SYNC) ext4_handle_sync(handle); @@ -5569,6 +5565,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) ext4_handle_sync(handle); inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); + ext4_update_inode_fsync_trans(handle, inode, 1); out_stop: ext4_journal_stop(handle); @@ -5742,6 +5739,8 @@ int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len) up_write(&EXT4_I(inode)->i_data_sem); if (IS_SYNC(inode)) ext4_handle_sync(handle); + if (ret >= 0) + ext4_update_inode_fsync_trans(handle, inode, 1); out_stop: ext4_journal_stop(handle); diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 831fd6beebf01bfa65c1c4a3ae505ed84bd35526..02ce7e7bbdf5ba4da0db50e50d8d4cab49cde4a3 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -474,57 +474,37 @@ static int ext4_find_unwritten_pgoff(struct inode *inode, endoff = (loff_t)end_blk << blkbits; index = startoff >> PAGE_SHIFT; - end = endoff >> PAGE_SHIFT; + end = (endoff - 1) >> PAGE_SHIFT; pagevec_init(&pvec, 0); do { int i, num; unsigned long nr_pages; - num = min_t(pgoff_t, end - index, PAGEVEC_SIZE); + num = min_t(pgoff_t, end - index, PAGEVEC_SIZE - 1) + 1; nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index, (pgoff_t)num); - if (nr_pages == 0) { - if (whence == SEEK_DATA) - break; - - BUG_ON(whence != SEEK_HOLE); - /* - * If this is the first time to go into the loop and - * offset is not beyond the end offset, it will be a - * hole at this offset - */ - if (lastoff == startoff || lastoff < endoff) - found = 1; - break; - } - - /* - * If this is the first time to go into the loop and - * offset is smaller than the first page offset, it will be a - * hole at this offset. - */ - if (lastoff == startoff && whence == SEEK_HOLE && - lastoff < page_offset(pvec.pages[0])) { - found = 1; + if (nr_pages == 0) break; - } for (i = 0; i < nr_pages; i++) { struct page *page = pvec.pages[i]; struct buffer_head *bh, *head; /* - * If the current offset is not beyond the end of given - * range, it will be a hole. + * If current offset is smaller than the page offset, + * there is a hole at this offset. */ - if (lastoff < endoff && whence == SEEK_HOLE && - page->index > end) { + if (whence == SEEK_HOLE && lastoff < endoff && + lastoff < page_offset(pvec.pages[i])) { found = 1; *offset = lastoff; goto out; } + if (page->index > end) + goto out; + lock_page(page); if (unlikely(page->mapping != inode->i_mapping)) { @@ -564,20 +544,18 @@ static int ext4_find_unwritten_pgoff(struct inode *inode, unlock_page(page); } - /* - * The no. of pages is less than our desired, that would be a - * hole in there. - */ - if (nr_pages < num && whence == SEEK_HOLE) { - found = 1; - *offset = lastoff; + /* The no. of pages is less than our desired, we are done. */ + if (nr_pages < num) break; - } index = pvec.pages[i - 1]->index + 1; pagevec_release(&pvec); } while (index <= end); + if (whence == SEEK_HOLE && lastoff < endoff) { + found = 1; + *offset = lastoff; + } out: pagevec_release(&pvec); return found; diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index d5dea4c293ef46be022c538d0465e60284b20fe4..8d141c0c8ff9de32a5be08a48f573de7fa618dc5 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1627,7 +1627,6 @@ int ext4_try_create_inline_dir(handle_t *handle, struct inode *parent, struct buffer_head *ext4_find_inline_entry(struct inode *dir, struct ext4_filename *fname, - const struct qstr *d_name, struct ext4_dir_entry_2 **res_dir, int *has_inline_data) { @@ -1649,7 +1648,7 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir, EXT4_INLINE_DOTDOT_SIZE; inline_size = EXT4_MIN_INLINE_DATA_SIZE - EXT4_INLINE_DOTDOT_SIZE; ret = ext4_search_dir(iloc.bh, inline_start, inline_size, - dir, fname, d_name, 0, res_dir); + dir, fname, 0, res_dir); if (ret == 1) goto out_find; if (ret < 0) @@ -1662,7 +1661,7 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir, inline_size = ext4_get_inline_size(dir) - EXT4_MIN_INLINE_DATA_SIZE; ret = ext4_search_dir(iloc.bh, inline_start, inline_size, - dir, fname, d_name, 0, res_dir); + dir, fname, 0, res_dir); if (ret == 1) goto out_find; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 1bd0bfa547f6deee46d8dfe039625ed1736d14ed..5cf82d03968ca2c0eb240461fa696e784694c1ea 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2124,15 +2124,29 @@ static int ext4_writepage(struct page *page, static int mpage_submit_page(struct mpage_da_data *mpd, struct page *page) { int len; - loff_t size = i_size_read(mpd->inode); + loff_t size; int err; BUG_ON(page->index != mpd->first_page); + clear_page_dirty_for_io(page); + /* + * We have to be very careful here! Nothing protects writeback path + * against i_size changes and the page can be writeably mapped into + * page tables. So an application can be growing i_size and writing + * data through mmap while writeback runs. clear_page_dirty_for_io() + * write-protects our page in page tables and the page cannot get + * written to again until we release page lock. So only after + * clear_page_dirty_for_io() we are safe to sample i_size for + * ext4_bio_write_page() to zero-out tail of the written page. We rely + * on the barrier provided by TestClearPageDirty in + * clear_page_dirty_for_io() to make sure i_size is really sampled only + * after page tables are updated. + */ + size = i_size_read(mpd->inode); if (page->index == size >> PAGE_SHIFT) len = size & ~PAGE_MASK; else len = PAGE_SIZE; - clear_page_dirty_for_io(page); err = ext4_bio_write_page(&mpd->io_submit, page, len, mpd->wbc, false); if (!err) mpd->wbc->nr_to_write--; @@ -3629,9 +3643,6 @@ static ssize_t ext4_direct_IO_write(struct kiocb *iocb, struct iov_iter *iter) get_block_func = ext4_dio_get_block_unwritten_async; dio_flags = DIO_LOCKING; } -#ifdef CONFIG_EXT4_FS_ENCRYPTION - BUG_ON(ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)); -#endif ret = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, get_block_func, ext4_end_io_dio, NULL, dio_flags); @@ -3713,7 +3724,7 @@ static ssize_t ext4_direct_IO_read(struct kiocb *iocb, struct iov_iter *iter) */ inode_lock_shared(inode); ret = filemap_write_and_wait_range(mapping, iocb->ki_pos, - iocb->ki_pos + count); + iocb->ki_pos + count - 1); if (ret) goto out_unlock; ret = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, @@ -4207,6 +4218,8 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); + if (ret >= 0) + ext4_update_inode_fsync_trans(handle, inode, 1); out_stop: ext4_journal_stop(handle); out_dio: @@ -5637,8 +5650,9 @@ static int ext4_expand_extra_isize(struct inode *inode, /* No extended attributes present */ if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR) || header->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC)) { - memset((void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE, 0, - new_extra_isize); + memset((void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE + + EXT4_I(inode)->i_extra_isize, 0, + new_extra_isize - EXT4_I(inode)->i_extra_isize); EXT4_I(inode)->i_extra_isize = new_extra_isize; return 0; } diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 5083bce20ac4dc2243ace1bba19ef506b90d9c29..b7928cddd539ee223584db33ab8cb3341faa2e86 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -3887,7 +3887,8 @@ ext4_mb_discard_group_preallocations(struct super_block *sb, err = ext4_mb_load_buddy(sb, group, &e4b); if (err) { - ext4_error(sb, "Error loading buddy information for %u", group); + ext4_warning(sb, "Error %d loading buddy information for %u", + err, group); put_bh(bitmap_bh); return 0; } @@ -4044,10 +4045,11 @@ void ext4_discard_preallocations(struct inode *inode) BUG_ON(pa->pa_type != MB_INODE_PA); group = ext4_get_group_number(sb, pa->pa_pstart); - err = ext4_mb_load_buddy(sb, group, &e4b); + err = ext4_mb_load_buddy_gfp(sb, group, &e4b, + GFP_NOFS|__GFP_NOFAIL); if (err) { - ext4_error(sb, "Error loading buddy information for %u", - group); + ext4_error(sb, "Error %d loading buddy information for %u", + err, group); continue; } @@ -4303,11 +4305,14 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb, spin_unlock(&lg->lg_prealloc_lock); list_for_each_entry_safe(pa, tmp, &discard_list, u.pa_tmp_list) { + int err; group = ext4_get_group_number(sb, pa->pa_pstart); - if (ext4_mb_load_buddy(sb, group, &e4b)) { - ext4_error(sb, "Error loading buddy information for %u", - group); + err = ext4_mb_load_buddy_gfp(sb, group, &e4b, + GFP_NOFS|__GFP_NOFAIL); + if (err) { + ext4_error(sb, "Error %d loading buddy information for %u", + err, group); continue; } ext4_lock_group(sb, group); @@ -5127,8 +5132,8 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group, ret = ext4_mb_load_buddy(sb, group, &e4b); if (ret) { - ext4_error(sb, "Error in loading buddy " - "information for %u", group); + ext4_warning(sb, "Error %d loading buddy information for %u", + ret, group); return ret; } bitmap = e4b.bd_bitmap; diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index b81f7d46f344d482d4a7ab15a5cc1ad3654b3259..404256caf9cff0df28517350113dff0d8b239cc9 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1155,12 +1155,11 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash, static inline int search_dirblock(struct buffer_head *bh, struct inode *dir, struct ext4_filename *fname, - const struct qstr *d_name, unsigned int offset, struct ext4_dir_entry_2 **res_dir) { return ext4_search_dir(bh, bh->b_data, dir->i_sb->s_blocksize, dir, - fname, d_name, offset, res_dir); + fname, offset, res_dir); } /* @@ -1262,7 +1261,6 @@ static inline bool ext4_match(const struct ext4_filename *fname, */ int ext4_search_dir(struct buffer_head *bh, char *search_buf, int buf_size, struct inode *dir, struct ext4_filename *fname, - const struct qstr *d_name, unsigned int offset, struct ext4_dir_entry_2 **res_dir) { struct ext4_dir_entry_2 * de; @@ -1355,7 +1353,7 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, if (ext4_has_inline_data(dir)) { int has_inline_data = 1; - ret = ext4_find_inline_entry(dir, &fname, d_name, res_dir, + ret = ext4_find_inline_entry(dir, &fname, res_dir, &has_inline_data); if (has_inline_data) { if (inlined) @@ -1447,7 +1445,7 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, goto next; } set_buffer_verified(bh); - i = search_dirblock(bh, dir, &fname, d_name, + i = search_dirblock(bh, dir, &fname, block << EXT4_BLOCK_SIZE_BITS(sb), res_dir); if (i == 1) { EXT4_I(dir)->i_dir_start_lookup = block; @@ -1488,7 +1486,6 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, { struct super_block * sb = dir->i_sb; struct dx_frame frames[2], *frame; - const struct qstr *d_name = fname->usr_fname; struct buffer_head *bh; ext4_lblk_t block; int retval; @@ -1505,7 +1502,7 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, if (IS_ERR(bh)) goto errout; - retval = search_dirblock(bh, dir, fname, d_name, + retval = search_dirblock(bh, dir, fname, block << EXT4_BLOCK_SIZE_BITS(sb), res_dir); if (retval == 1) @@ -1530,7 +1527,7 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, bh = NULL; errout: - dxtrace(printk(KERN_DEBUG "%s not found\n", d_name->name)); + dxtrace(printk(KERN_DEBUG "%s not found\n", fname->usr_fname->name)); success: dx_release(frames); return bh; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0b177da9ea8271f4a46208937d3c43fd20c0e9b7..d37c81f327e790cc4a309fd0a12baef0dc2ff4ac 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -848,14 +848,9 @@ static inline void ext4_quota_off_umount(struct super_block *sb) { int type; - if (ext4_has_feature_quota(sb)) { - dquot_disable(sb, -1, - DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED); - } else { - /* Use our quota_off function to clear inode flags etc. */ - for (type = 0; type < EXT4_MAXQUOTAS; type++) - ext4_quota_off(sb, type); - } + /* Use our quota_off function to clear inode flags etc. */ + for (type = 0; type < EXT4_MAXQUOTAS; type++) + ext4_quota_off(sb, type); } #else static inline void ext4_quota_off_umount(struct super_block *sb) @@ -1179,6 +1174,9 @@ static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, return res; } + res = dquot_initialize(inode); + if (res) + return res; retry: handle = ext4_journal_start(inode, EXT4_HT_MISC, ext4_jbd2_credits_xattr(inode)); @@ -5485,7 +5483,7 @@ static int ext4_quota_off(struct super_block *sb, int type) goto out; err = dquot_quota_off(sb, type); - if (err) + if (err || ext4_has_feature_quota(sb)) goto out_put; inode_lock(inode); @@ -5505,6 +5503,7 @@ static int ext4_quota_off(struct super_block *sb, int type) out_unlock: inode_unlock(inode); out_put: + lockdep_set_quota_inode(inode, I_DATA_SEM_NORMAL); iput(inode); return err; out: diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 8fb7ce14e6ebe3a4ba1f2bd2da36b314819d24a5..5d3c2536641c7db6c1fa5b19b4ad10e630e09986 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -888,6 +888,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, else { u32 ref; + WARN_ON_ONCE(dquot_initialize_needed(inode)); + /* The old block is released after updating the inode. */ error = dquot_alloc_block(inode, @@ -954,6 +956,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, /* We need to allocate a new block */ ext4_fsblk_t goal, block; + WARN_ON_ONCE(dquot_initialize_needed(inode)); + goal = ext4_group_first_block_no(sb, EXT4_I(inode)->i_block_group); @@ -1166,6 +1170,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, return -EINVAL; if (strlen(name) > 255) return -ERANGE; + ext4_write_lock_xattr(inode, &no_expand); error = ext4_reserve_inode_write(handle, inode, &is.iloc); @@ -1267,6 +1272,9 @@ ext4_xattr_set(struct inode *inode, int name_index, const char *name, int error, retries = 0; int credits = ext4_jbd2_credits_xattr(inode); + error = dquot_initialize(inode); + if (error) + return error; retry: handle = ext4_journal_start(inode, EXT4_HT_XATTR, credits); if (IS_ERR(handle)) { diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 9ee4832b6f8b3664430e31bcf3775b412e1b81d8..2d30a6da7013112adafd08545b32cb00d179311c 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -680,6 +680,12 @@ int jbd2__journal_restart(handle_t *handle, int nblocks, gfp_t gfp_mask) rwsem_release(&journal->j_trans_commit_map, 1, _THIS_IP_); handle->h_buffer_credits = nblocks; + /* + * Restore the original nofs context because the journal restart + * is basically the same thing as journal stop and start. + * start_this_handle will start a new nofs context. + */ + memalloc_nofs_restore(handle->saved_alloc_context); ret = start_this_handle(journal, handle, gfp_mask); return ret; } diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index ebf80c7739e15ebdd2bc55896d66943f3aecef9a..48813aeaab8067e921d67b110e28e2a8dd94a3c0 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1512,6 +1512,22 @@ int dquot_initialize(struct inode *inode) } EXPORT_SYMBOL(dquot_initialize); +bool dquot_initialize_needed(struct inode *inode) +{ + struct dquot **dquots; + int i; + + if (!dquot_active(inode)) + return false; + + dquots = i_dquot(inode); + for (i = 0; i < MAXQUOTAS; i++) + if (!dquots[i] && sb_has_quota_active(inode->i_sb, i)) + return true; + return false; +} +EXPORT_SYMBOL(dquot_initialize_needed); + /* * Release all quotas referenced by inode. * diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index 9c6f768b7d32f66db0b05e0b5500f4b71ecebde7..dda22f45fc1b2361b9b7c79d5fa39a98f09952be 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -44,6 +44,7 @@ void inode_sub_rsv_space(struct inode *inode, qsize_t number); void inode_reclaim_rsv_space(struct inode *inode, qsize_t number); int dquot_initialize(struct inode *inode); +bool dquot_initialize_needed(struct inode *inode); void dquot_drop(struct inode *inode); struct dquot *dqget(struct super_block *sb, struct kqid qid); static inline struct dquot *dqgrab(struct dquot *dquot) @@ -207,6 +208,11 @@ static inline int dquot_initialize(struct inode *inode) return 0; } +static inline bool dquot_initialize_needed(struct inode *inode) +{ + return false; +} + static inline void dquot_drop(struct inode *inode) { }