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| author | Shuoran Liu <liushuoran@huawei.com> | 2016-08-25 20:42:09 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-08-29 18:31:16 -0700 |
| commit | 5d2b42ede71c9da0bf4248fd2d409918fb065b5f (patch) | |
| tree | 49b53989cc6dbf8f284df35dc07d0587ce643511 /fs/f2fs/dir.c | |
| parent | dfd02e4de1c5f40c268984254045d388ab0c3e74 (diff) | |
| download | linux-0-day-5d2b42ede71c9da0bf4248fd2d409918fb065b5f.tar.gz linux-0-day-5d2b42ede71c9da0bf4248fd2d409918fb065b5f.tar.xz | |
f2fs: fix a bug when using namehash to locate dentry bucket
In the following scenario,
1) we don't have the key and doing a lookup for encrypted file,
2) and the encrypted filename is big name
we should use fname->hash as name hash value instead of what is
calculated by fname->disk_name. Because in such case,
fname->disk_name is empty.
Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/dir.c')
| -rw-r--r-- | fs/f2fs/dir.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 9054aeac80152..b3e6f7feadc9f 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -172,7 +172,10 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir, int max_slots; f2fs_hash_t namehash; - namehash = f2fs_dentry_hash(&name); + if(fname->hash) + namehash = cpu_to_le32(fname->hash); + else + namehash = f2fs_dentry_hash(&name); nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); nblock = bucket_blocks(level); |