diff options
| -rw-r--r-- | fs/ocfs2/inode.c | 2 | ||||
| -rw-r--r-- | fs/ocfs2/inode.h | 4 | ||||
| -rw-r--r-- | fs/ocfs2/namei.c | 4 | ||||
| -rw-r--r-- | fs/ocfs2/suballoc.c | 36 | ||||
| -rw-r--r-- | fs/ocfs2/suballoc.h | 2 |
5 files changed, 46 insertions, 2 deletions
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index f1f77b2..4a88bce 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -352,6 +352,8 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, ocfs2_set_inode_flags(inode); + OCFS2_I(inode)->ip_last_used_slot = 0; + OCFS2_I(inode)->ip_last_used_group = 0; mlog_exit_void(); } diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h index eb3c302..e1978ac 100644 --- a/fs/ocfs2/inode.h +++ b/fs/ocfs2/inode.h @@ -72,6 +72,10 @@ struct ocfs2_inode_info struct inode vfs_inode; struct jbd2_inode ip_jinode; + + /* Only valid if the inode is the dir. */ + u32 ip_last_used_slot; + u64 ip_last_used_group; }; /* diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 58c318d..2220f93 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -485,8 +485,8 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb, *new_fe_bh = NULL; - status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit, - &fe_blkno); + status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh, + inode_ac, &suballoc_bit, &fe_blkno); if (status < 0) { mlog_errno(status); goto leave; diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index a696286..487f00c 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -1618,8 +1618,41 @@ bail: return status; } +static void ocfs2_init_inode_ac_group(struct inode *dir, + struct buffer_head *parent_fe_bh, + struct ocfs2_alloc_context *ac) +{ + struct ocfs2_dinode *fe = (struct ocfs2_dinode *)parent_fe_bh->b_data; + /* + * Try to allocate inodes from some specific group. + * + * If the parent dir has recorded the last group used in allocation, + * cool, use it. Otherwise if we try to allocate new inode from the + * same slot the parent dir belongs to, use the same chunk. + * + * We are very careful here to avoid the mistake of setting + * ac_last_group to a group descriptor from a different (unlocked) slot. + */ + if (OCFS2_I(dir)->ip_last_used_group && + OCFS2_I(dir)->ip_last_used_slot == ac->ac_alloc_slot) + ac->ac_last_group = OCFS2_I(dir)->ip_last_used_group; + else if (le16_to_cpu(fe->i_suballoc_slot) == ac->ac_alloc_slot) + ac->ac_last_group = ocfs2_which_suballoc_group( + le64_to_cpu(fe->i_blkno), + le16_to_cpu(fe->i_suballoc_bit)); +} + +static inline void ocfs2_save_inode_ac_group(struct inode *dir, + struct ocfs2_alloc_context *ac) +{ + OCFS2_I(dir)->ip_last_used_group = ac->ac_last_group; + OCFS2_I(dir)->ip_last_used_slot = ac->ac_alloc_slot; +} + int ocfs2_claim_new_inode(struct ocfs2_super *osb, handle_t *handle, + struct inode *dir, + struct buffer_head *parent_fe_bh, struct ocfs2_alloc_context *ac, u16 *suballoc_bit, u64 *fe_blkno) @@ -1635,6 +1668,8 @@ int ocfs2_claim_new_inode(struct ocfs2_super *osb, BUG_ON(ac->ac_bits_wanted != 1); BUG_ON(ac->ac_which != OCFS2_AC_USE_INODE); + ocfs2_init_inode_ac_group(dir, parent_fe_bh, ac); + status = ocfs2_claim_suballoc_bits(osb, ac, handle, @@ -1653,6 +1688,7 @@ int ocfs2_claim_new_inode(struct ocfs2_super *osb, *fe_blkno = bg_blkno + (u64) (*suballoc_bit); ac->ac_bits_given++; + ocfs2_save_inode_ac_group(dir, ac); status = 0; bail: mlog_exit(status); diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h index e3c13c7..ea85a4c 100644 --- a/fs/ocfs2/suballoc.h +++ b/fs/ocfs2/suballoc.h @@ -88,6 +88,8 @@ int ocfs2_claim_metadata(struct ocfs2_super *osb, u64 *blkno_start); int ocfs2_claim_new_inode(struct ocfs2_super *osb, handle_t *handle, + struct inode *dir, + struct buffer_head *parent_fe_bh, struct ocfs2_alloc_context *ac, u16 *suballoc_bit, u64 *fe_blkno); |
