From e3a93c2db6410822aa24295c3874b44ba21730a8 Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Tue, 17 Feb 2009 15:29:35 -0800 Subject: 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 --- fs/ocfs2/ocfs2_fs.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'fs/ocfs2/ocfs2_fs.h') 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]; -- cgit v1.2.3