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fuse: fix time_to_jiffies nsec sanity check 

Commit bcb6f6d2b9 ("fuse: use timespec64") introduced clamped nsec values
in time_to_jiffies but used the max of nsec and NSEC_PER_SEC - 1 instead of
the min. Because of this, dentries would stay in the cache longer than
requested and go stale in scenarios that relied on their timely eviction.

Fixes: bcb6f6d2b9 ("fuse: use timespec64")
Signed-off-by: David Sheets <dsheets@docker.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org> # 4.9
This commit is contained in:
David Sheets 2017-01-13 15:58:30 +00:00 committed by Miklos Szeredi
parent a8a86d78d6
commit 210675270c
1 changed files with 1 additions and 1 deletions
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fs/fuse/dir.c
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@ -68,7 +68,7 @@ static u64 time_to_jiffies(u64 sec, u32 nsec)
if (sec || nsec) {
struct timespec64 ts = {
sec,
max_t(u32, nsec, NSEC_PER_SEC - 1)
min_t(u32, nsec, NSEC_PER_SEC - 1)
};
return get_jiffies_64() + timespec64_to_jiffies(&ts);