diff options
Diffstat (limited to 'fs/ocfs2/suballoc.c')
| -rw-r--r-- | fs/ocfs2/suballoc.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index c5ff18b46b5..95d432b694e 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -441,11 +441,11 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb, ac->ac_alloc_slot = slot; fe = (struct ocfs2_dinode *) bh->b_data; - if (!OCFS2_IS_VALID_DINODE(fe)) { - OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe); - status = -EIO; - goto bail; - } + + /* The bh was validated by the inode read inside + * ocfs2_inode_lock(). Any corruption is a code bug. */ + BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); + if (!(fe->i_flags & cpu_to_le32(OCFS2_CHAIN_FL))) { ocfs2_error(alloc_inode->i_sb, "Invalid chain allocator %llu", (unsigned long long)le64_to_cpu(fe->i_blkno)); @@ -931,11 +931,6 @@ static int ocfs2_relink_block_group(handle_t *handle, struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; struct ocfs2_group_desc *prev_bg = (struct ocfs2_group_desc *) prev_bg_bh->b_data; - if (!OCFS2_IS_VALID_DINODE(fe)) { - OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe); - status = -EIO; - goto out; - } if (!OCFS2_IS_VALID_GROUP_DESC(bg)) { OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, bg); status = -EIO; @@ -1392,11 +1387,11 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb, BUG_ON(!ac->ac_bh); fe = (struct ocfs2_dinode *) ac->ac_bh->b_data; - if (!OCFS2_IS_VALID_DINODE(fe)) { - OCFS2_RO_ON_INVALID_DINODE(osb->sb, fe); - status = -EIO; - goto bail; - } + + /* The bh was validated by the inode read during + * ocfs2_reserve_suballoc_bits(). Any corruption is a code bug. */ + BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); + if (le32_to_cpu(fe->id1.bitmap1.i_used) >= le32_to_cpu(fe->id1.bitmap1.i_total)) { ocfs2_error(osb->sb, "Chain allocator dinode %llu has %u used " @@ -1782,11 +1777,12 @@ int ocfs2_free_suballoc_bits(handle_t *handle, mlog_entry_void(); - if (!OCFS2_IS_VALID_DINODE(fe)) { - OCFS2_RO_ON_INVALID_DINODE(alloc_inode->i_sb, fe); - status = -EIO; - goto bail; - } + /* The alloc_bh comes from ocfs2_free_dinode() or + * ocfs2_free_clusters(). The callers have all locked the + * allocator and gotten alloc_bh from the lock call. This + * validates the dinode buffer. Any corruption that has happended + * is a code bug. */ + BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); BUG_ON((count + start_bit) > ocfs2_bits_per_group(cl)); mlog(0, "%llu: freeing %u bits from group %llu, starting at %u\n", |