diff options
Diffstat (limited to 'fs/nilfs2/mdt.c')
| -rw-r--r-- | fs/nilfs2/mdt.c | 36 |
1 files changed, 14 insertions, 22 deletions
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 39a5b84e2c9f..a0babd2bff6a 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -237,8 +237,6 @@ static int nilfs_mdt_read_block(struct inode *inode, unsigned long block, * * %-ENOENT - the specified block does not exist (hole block) * - * %-EINVAL - bmap is broken. (the caller should call nilfs_error()) - * * %-EROFS - Read only filesystem (for create mode) */ int nilfs_mdt_get_block(struct inode *inode, unsigned long blkoff, int create, @@ -273,8 +271,6 @@ int nilfs_mdt_get_block(struct inode *inode, unsigned long blkoff, int create, * %-ENOMEM - Insufficient memory available. * * %-EIO - I/O error - * - * %-EINVAL - bmap is broken. (the caller should call nilfs_error()) */ int nilfs_mdt_delete_block(struct inode *inode, unsigned long block) { @@ -350,8 +346,6 @@ int nilfs_mdt_forget_block(struct inode *inode, unsigned long block) * %-EIO - I/O error * * %-ENOENT - the specified block does not exist (hole block) - * - * %-EINVAL - bmap is broken. (the caller should call nilfs_error()) */ int nilfs_mdt_mark_block_dirty(struct inode *inode, unsigned long block) { @@ -460,9 +454,9 @@ int nilfs_mdt_setup_shadow_map(struct inode *inode, struct backing_dev_info *bdi = inode->i_sb->s_bdi; INIT_LIST_HEAD(&shadow->frozen_buffers); - nilfs_mapping_init_once(&shadow->frozen_data); + address_space_init_once(&shadow->frozen_data); nilfs_mapping_init(&shadow->frozen_data, bdi, &shadow_map_aops); - nilfs_mapping_init_once(&shadow->frozen_btnodes); + address_space_init_once(&shadow->frozen_btnodes); nilfs_mapping_init(&shadow->frozen_btnodes, bdi, &shadow_map_aops); mi->mi_shadow = shadow; return 0; @@ -499,31 +493,29 @@ int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh) struct buffer_head *bh_frozen; struct page *page; int blkbits = inode->i_blkbits; - int ret = -ENOMEM; page = grab_cache_page(&shadow->frozen_data, bh->b_page->index); if (!page) - return ret; + return -ENOMEM; if (!page_has_buffers(page)) create_empty_buffers(page, 1 << blkbits, 0); bh_frozen = nilfs_page_get_nth_block(page, bh_offset(bh) >> blkbits); - if (bh_frozen) { - if (!buffer_uptodate(bh_frozen)) - nilfs_copy_buffer(bh_frozen, bh); - if (list_empty(&bh_frozen->b_assoc_buffers)) { - list_add_tail(&bh_frozen->b_assoc_buffers, - &shadow->frozen_buffers); - set_buffer_nilfs_redirected(bh); - } else { - brelse(bh_frozen); /* already frozen */ - } - ret = 0; + + if (!buffer_uptodate(bh_frozen)) + nilfs_copy_buffer(bh_frozen, bh); + if (list_empty(&bh_frozen->b_assoc_buffers)) { + list_add_tail(&bh_frozen->b_assoc_buffers, + &shadow->frozen_buffers); + set_buffer_nilfs_redirected(bh); + } else { + brelse(bh_frozen); /* already frozen */ } + unlock_page(page); page_cache_release(page); - return ret; + return 0; } struct buffer_head * |