nfsd: fix jiffies/time_t mixup in LRU list

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commit 9594497f2c upstream.

The nfsd4_blocked_lock->nbl_time timestamp is recorded in jiffies,
but then compared to a CLOCK_REALTIME timestamp later on, which makes
no sense.

For consistency with the other timestamps, change this to use a time_t.

This is a change in behavior, which may cause regressions, but the
current code is not sensible. On a system with CONFIG_HZ=1000,
the 'time_after((unsigned long)nbl->nbl_time, (unsigned long)cutoff))'
check is false for roughly the first 18 days of uptime and then true
for the next 49 days.

Fixes: 7919d0a27f ("nfsd: add a LRU list for blocked locks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Arnd Bergmann 2019-11-04 14:43:17 +01:00 • committed by Greg Kroah-Hartman

parent 9586c590ef

commit 42fdf8c909

2 changed files with 2 additions and 2 deletions

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fs/nfsd/nfs4state.c

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2

fs/nfsd/state.h

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