ext4: create a new function search_dir
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>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 3cde36b..d50684b 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1005,6 +1005,16 @@
return (err);
}
+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);
+}
+
/*
* Directory block splitting, compacting
@@ -1098,11 +1108,13 @@
/*
* 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)
+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;
@@ -1110,8 +1122,8 @@
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' */