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| author |   Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-08 16:37:28 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-28 15:41:44 -0700 |
| commit | 3589a9190b927f68339f6c4779196360dd453a70 (patch) | |
| tree | 917fc397a4dd0c8e2ba27e6e31ec97675df938f0 /fs/f2fs/debug.c | |
| parent | f2fs: support FALLOC_FL_ZERO_RANGE (diff) | |
| download | linux-dev-3589a9190b927f68339f6c4779196360dd453a70.tar.xz linux-dev-3589a9190b927f68339f6c4779196360dd453a70.zip | |
f2fs: avoid value overflow in showing current status
This patch fixes overflow when do cat /sys/kernel/debug/f2fs/status.
If a section is relatively large, dist value can be overflowed.
Reported-by: Yossi Goldfill <ygoldfill@radianmemory.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/debug.c')
| -rw-r--r-- | fs/f2fs/debug.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index f50acbc50998..efbc83f07305 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -94,7 +94,8 @@ static void update_general_status(struct f2fs_sb_info *sbi) static void update_sit_info(struct f2fs_sb_info *sbi) { struct f2fs_stat_info *si = F2FS_STAT(sbi); - unsigned int blks_per_sec, hblks_per_sec, total_vblocks, bimodal, dist; + unsigned long long blks_per_sec, hblks_per_sec, total_vblocks; + unsigned long long bimodal, dist; unsigned int segno, vblocks; int ndirty = 0; |