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| author | Mark Fasheh <mfasheh@suse.com> | 2008-11-24 17:02:08 -0800 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-04-03 11:39:16 -0700 |
| commit | 4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34 (patch) | |
| tree | 89cc2629bed3949e980edcae3d807e71718a9028 /fs/ocfs2/dir.h | |
| parent | 9b7895efac906d66d19856194e1ba61f37e231a4 (diff) | |
| download | lwn-4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34.tar.gz lwn-4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34.zip | |
ocfs2: Store dir index records inline
Allow us to store a small number of directory index records in the
ocfs2_dx_root_block. This saves us a disk read on small to medium sized
directories (less than about 250 entries). The inline root is automatically
turned into a root block with extents if the directory size increases beyond
it's capacity.
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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h index d273aaef2ec2..07b0416cdd42 100644 --- a/fs/ocfs2/dir.h +++ b/fs/ocfs2/dir.h @@ -37,6 +37,8 @@ struct ocfs2_dir_lookup_result { struct ocfs2_dir_entry *dl_entry; /* Target dirent in * unindexed leaf */ + 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 */ |