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| author | Theodore Ts'o <tytso@mit.edu> | 2010-12-19 22:07:02 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-12-19 22:07:02 -0500 |
| commit | cad3f00763dcf9dfc62cbddf4bd714ab5a71a0eb (patch) | |
| tree | 02ec7c4959f5506f0b2fe128b1318e257ee6f0e4 /fs/ext4/ext4.h | |
| parent | b17b35ec13adfeb0346d4b329110b14adc509327 (diff) | |
| download | kernel_samsung_smdk4412-cad3f00763dcf9dfc62cbddf4bd714ab5a71a0eb.tar.gz kernel_samsung_smdk4412-cad3f00763dcf9dfc62cbddf4bd714ab5a71a0eb.tar.bz2 kernel_samsung_smdk4412-cad3f00763dcf9dfc62cbddf4bd714ab5a71a0eb.zip | |
ext4: optimize ext4_check_dir_entry() with unlikely() annotations
This function gets called a lot for large directories, and the answer
is almost always "no, no, there's no problem". This means using
unlikely() is a good thing.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 17baecbf8cd..49f1ceaac57 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1639,7 +1639,8 @@ extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *, struct ext4_dir_entry_2 *, struct buffer_head *, unsigned int); #define ext4_check_dir_entry(dir, de, bh, offset) \ - __ext4_check_dir_entry(__func__, __LINE__, (dir), (de), (bh), (offset)) + unlikely(__ext4_check_dir_entry(__func__, __LINE__, (dir), (de), \ + (bh), (offset))) extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash, __u32 minor_hash, struct ext4_dir_entry_2 *dirent); |