diff options
Diffstat (limited to 'fs/ocfs2/suballoc.h')
| -rw-r--r-- | fs/ocfs2/suballoc.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h index 4df159d..e3c13c7 100644 --- a/fs/ocfs2/suballoc.h +++ b/fs/ocfs2/suballoc.h @@ -164,10 +164,24 @@ void ocfs2_free_ac_resource(struct ocfs2_alloc_context *ac); * and return that block offset. */ u64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster); -/* somewhat more expensive than our other checks, so use sparingly. */ +/* + * By default, ocfs2_read_group_descriptor() calls ocfs2_error() when it + * finds a problem. A caller that wants to check a group descriptor + * without going readonly should read the block with ocfs2_read_block[s]() + * and then checking it with this function. This is only resize, really. + * Everyone else should be using ocfs2_read_group_descriptor(). + */ int ocfs2_check_group_descriptor(struct super_block *sb, struct ocfs2_dinode *di, - struct ocfs2_group_desc *gd); + struct buffer_head *bh); +/* + * Read a group descriptor block into *bh. If *bh is NULL, a bh will be + * allocated. This is a cached read. The descriptor will be validated with + * ocfs2_validate_group_descriptor(). + */ +int ocfs2_read_group_descriptor(struct inode *inode, struct ocfs2_dinode *di, + u64 gd_blkno, struct buffer_head **bh); + int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_extent_tree *et, u32 clusters_to_add, u32 extents_to_split, struct ocfs2_alloc_context **data_ac, |
