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Subject[PATCH V1 12/17] ext4: Create a new function search_dir.
Date
From: Tao Ma <boyu.mt@taobao.com>

search_dirblock is used to search a dir block, but the code is
almost the same for searching an inline dir.

So create a new fuction search_dir and let search_dirblock
call it.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
---
fs/ext4/namei.c | 26 +++++++++++++++++++-------
1 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 4f36137..2c388ad 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -802,11 +802,13 @@ static inline int ext4_match (int len, const char * const name,
/*
* Returns 0 if not found, -1 on failure, and 1 on success
*/
-static inline int search_dirblock(struct buffer_head *bh,
- struct inode *dir,
- const struct qstr *d_name,
- unsigned int offset,
- struct ext4_dir_entry_2 ** res_dir)
+static inline int search_dir(struct buffer_head *bh,
+ char *search_buf,
+ int buf_size,
+ struct inode *dir,
+ const struct qstr *d_name,
+ unsigned int offset,
+ struct ext4_dir_entry_2 **res_dir)
{
struct ext4_dir_entry_2 * de;
char * dlimit;
@@ -814,8 +816,8 @@ static inline int search_dirblock(struct buffer_head *bh,
const char *name = d_name->name;
int namelen = d_name->len;

- de = (struct ext4_dir_entry_2 *) bh->b_data;
- dlimit = bh->b_data + dir->i_sb->s_blocksize;
+ de = (struct ext4_dir_entry_2 *)search_buf;
+ dlimit = search_buf + buf_size;
while ((char *) de < dlimit) {
/* this code is executed quadratically often */
/* do minimal checking `by hand' */
@@ -840,6 +842,16 @@ static inline int search_dirblock(struct buffer_head *bh,
return 0;
}

+static inline int search_dirblock(struct buffer_head *bh,
+ struct inode *dir,
+ const struct qstr *d_name,
+ unsigned int offset,
+ struct ext4_dir_entry_2 **res_dir)
+{
+ return search_dir(bh, bh->b_data, dir->i_sb->s_blocksize, dir,
+ d_name, offset, res_dir);
+}
+

/*
* ext4_find_entry()
--
1.7.0.4


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