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| author | Tao Ma <boyu.mt@taobao.com> | 2012-12-10 14:05:59 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-12-10 14:05:59 -0500 |
| commit | 7335cd3b41b1e704608ca46159641ca9cb598121 (patch) | |
| tree | 33d9d6de3fa27be5701d09e3f75cd568c3021038 | |
| parent | 65d165d9366dbf783d0102177006d47c8859ba31 (diff) | |
| download | op-kernel-dev-7335cd3b41b1e704608ca46159641ca9cb598121.zip op-kernel-dev-7335cd3b41b1e704608ca46159641ca9cb598121.tar.gz | |
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>
| -rw-r--r-- | fs/ext4/ext4.h | 7 | ||||
| -rw-r--r-- | fs/ext4/namei.c | 26 |
2 files changed, 26 insertions, 7 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index e3a7465..a971b65 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2122,6 +2122,13 @@ extern int ext4_orphan_add(handle_t *, struct inode *); extern int ext4_orphan_del(handle_t *, struct inode *); extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash, __u32 start_minor_hash, __u32 *next_hash); +extern 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); /* resize.c */ extern int ext4_group_add(struct super_block *sb, 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 @@ errout: 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 @@ 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) +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 @@ 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' */ |
