diff options
| author | Mark Fasheh <mfasheh@suse.com> | 2009-01-29 18:17:46 -0800 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-04-03 11:39:16 -0700 |
| commit | e7c17e43090afe558c40bfb66637744c27bd2aeb (patch) | |
| tree | 4c164c4ec59eaa7599c91f865a261517454ba45f /fs/ocfs2/dir.h | |
| parent | 4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34 (diff) | |
ocfs2: Introduce dir free space list
The only operation which doesn't get faster with directory indexing is
insert, which still has to walk the entire unindexed directory portion to
find a free block. This patch provides an improvement in directory insert
performance by maintaining a singly linked list of directory leaf blocks
which have space for additional dirents.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/dir.h')
| -rw-r--r-- | fs/ocfs2/dir.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h index 07b0416cdd4..e683f3deb64 100644 --- a/fs/ocfs2/dir.h +++ b/fs/ocfs2/dir.h @@ -39,11 +39,19 @@ struct ocfs2_dir_lookup_result { struct buffer_head *dl_dx_root_bh; /* Root of indexed * tree */ + struct buffer_head *dl_dx_leaf_bh; /* Indexed leaf block */ struct ocfs2_dx_entry *dl_dx_entry; /* Target dx_entry in * indexed leaf */ struct ocfs2_dx_hinfo dl_hinfo; /* Name hash results */ + + struct buffer_head *dl_prev_leaf_bh;/* Previous entry in + * dir free space + * list. NULL if + * previous entry is + * dx root block. */ }; + void ocfs2_free_dir_lookup_result(struct ocfs2_dir_lookup_result *res); int ocfs2_find_entry(const char *name, int namelen, |