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sunrpc: use seconds since boot in expiry cache

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This protects us from confusion when the wallclock time changes.

We convert to and from wallclock when  setting or reading expiry
times.

Also use seconds since boot for last_clost time.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
NeilBrown
2010-08-12 16:55:22 +10:00
committed by J. Bruce Fields
parent 17cebf658e
commit c5b29f885a
4 changed files with 48 additions and 24 deletions
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2
fs/nfsd/nfs4idmap.c
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@@ -550,7 +550,7 @@ do_idmap_lookup_nowait(struct ent *(*lookup_fn)(struct ent *),
goto out_err;
ret = -ETIMEDOUT;
if (!test_bit(CACHE_VALID, &(*item)->h.flags)
|| (*item)->h.expiry_time < get_seconds()
|| (*item)->h.expiry_time < seconds_since_boot()
|| detail->flush_time > (*item)->h.last_refresh)
goto out_put;
ret = -ENOENT;