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| author | Chao Yu <chao2.yu@samsung.com> | 2014-04-28 17:59:43 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-05-07 10:21:57 +0900 |
| commit | 817202d937e6cca7e60f42e6495aaa51d70d9d7e (patch) | |
| tree | 24ea4565ddf464250fa39a0e4735d01b14ebf6d6 /fs/f2fs/f2fs.h | |
| parent | 5c1f9927ec1a4753e845193bde99ac3b03b08818 (diff) | |
| download | linux-817202d937e6cca7e60f42e6495aaa51d70d9d7e.tar.gz linux-817202d937e6cca7e60f42e6495aaa51d70d9d7e.tar.bz2 linux-817202d937e6cca7e60f42e6495aaa51d70d9d7e.zip | |
f2fs: readahead multi pages of directory for performance
We have no so such readahead mechanism in ->iterate() path as the one in
->read() path, it cause low performance when we read large directory.
This patch add readahead in f2fs_readdir() for better performance.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e77be7cb1e60..2b67679f88b6 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -182,6 +182,8 @@ enum { #define F2FS_LINK_MAX 32000 /* maximum link count per file */ +#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ + /* for in-memory extent cache entry */ #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |