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| author | Mark Fasheh <mfasheh@suse.com> | 2009-02-18 02:29:35 +0300 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-04-03 22:39:16 +0400 |
| commit | e3a93c2db6410822aa24295c3874b44ba21730a8 (patch) | |
| tree | 8de41a37abc6497745d07506a0fb5174da61d7c1 /fs/ocfs2/ocfs2_fs.h | |
| parent | 198a1ca3b735986542c538e38b9499ffcaed7005 (diff) | |
| download | linux-e3a93c2db6410822aa24295c3874b44ba21730a8.tar.xz | |
ocfs2: Add total entry count to dx_root_block
This little bit of extra accounting speeds up ocfs2_empty_dir()
dramatically by allowing us to short-circuit the full directory scan.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/ocfs2_fs.h')
| -rw-r--r-- | fs/ocfs2/ocfs2_fs.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index 43da76eff9ae..f7a5201410c8 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -421,6 +421,7 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = { #define OCFS2_LINK_MAX 32000 #define OCFS2_DX_LINK_MAX ((1U << 31) - 1U) #define OCFS2_LINKS_HI_SHIFT 16 +#define OCFS2_DX_ENTRIES_MAX (0xffffffffU) #define S_SHIFT 12 static unsigned char ocfs2_type_by_mode[S_IFMT >> S_SHIFT] = { @@ -844,7 +845,10 @@ struct ocfs2_dx_root_block { __u8 dr_reserved0; __le16 dr_reserved1; __le64 dr_dir_blkno; /* Pointer to parent inode */ - __le64 dr_reserved2; + __le32 dr_num_entries; /* Total number of + * names stored in + * this directory.*/ + __le32 dr_reserved2; __le64 dr_free_blk; /* Pointer to head of free * unindexed block list. */ __le64 dr_reserved3[15]; |