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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>
hifive-unleashed-5.1
Jaegeuk Kim 2015-05-08 16:37:28 -07:00
parent 75cd4e098d
commit 3589a9190b
1 changed files with 2 additions and 1 deletions
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3
fs/f2fs/debug.c
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@ -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;