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author | Chao Yu <chao@kernel.org> | 2024-02-12 19:08:18 +0300 |
---|---|---|
committer | Sasha Levin <sashal@kernel.org> | 2024-03-27 01:17:24 +0300 |
commit | bdb95f87a7f880eeda7e5380ce6af86dff93ad03 (patch) | |
tree | 69ca115f58f94e8866240ac6152fef68ae413856 /fs/f2fs | |
parent | 64582cc5357cd984724cfb0835b4a34d9c279d31 (diff) | |
download | linux-bdb95f87a7f880eeda7e5380ce6af86dff93ad03.tar.xz |
f2fs: compress: fix to check zstd compress level correctly in mount option
[ Upstream commit e39602da752cd1d0462e3fa04074146f6f2803f6 ]
f2fs only support to config zstd compress level w/ a positive number due
to layout design, but since commit e0c1b49f5b67 ("lib: zstd: Upgrade to
latest upstream zstd version 1.4.10"), zstd supports negative compress
level, so that zstd_min_clevel() may return a negative number, then w/
below mount option, .compress_level can be configed w/ a negative number,
which is not allowed to f2fs, let's add check condition to avoid it.
mount -o compress_algorithm=zstd:4294967295 /dev/sdx /mnt/f2fs
Fixes: 00e120b5e4b5 ("f2fs: assign default compression level")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r-- | fs/f2fs/super.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 18cc4829f7e8..e64ce5abcdf4 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -663,7 +663,7 @@ static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) #ifdef CONFIG_F2FS_FS_ZSTD static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) { - unsigned int level; + int level; int len = 4; if (strlen(str) == len) { @@ -677,9 +677,15 @@ static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); return -EINVAL; } - if (kstrtouint(str + 1, 10, &level)) + if (kstrtoint(str + 1, 10, &level)) return -EINVAL; + /* f2fs does not support negative compress level now */ + if (level < 0) { + f2fs_info(sbi, "do not support negative compress level: %d", level); + return -ERANGE; + } + if (!f2fs_is_compress_level_valid(COMPRESS_ZSTD, level)) { f2fs_info(sbi, "invalid zstd compress level: %d", level); return -EINVAL; |