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authorMark Fasheh <mfasheh@suse.com>2008-11-24 17:02:08 -0800
committerMark Fasheh <mfasheh@suse.com>2009-04-03 11:39:16 -0700
commit4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34 (patch)
tree89cc2629bed3949e980edcae3d807e71718a9028 /fs/ocfs2/dir.h
parent9b7895efac906d66d19856194e1ba61f37e231a4 (diff)
downloadop-kernel-dev-4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34.zip
op-kernel-dev-4ed8a6bb083bfcc21f1ed66a474b03c0386e4b34.tar.gz
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.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h
index d273aae..07b0416 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 */
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