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authorMarc Eshel <eshel@almaden.ibm.com>2007-07-17 04:04:35 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:07 -0700
commit9a8db97e7756119689c93c431e8b8324080f5625 (patch)
tree2e0ac28664b02c7e1c7a111c6e60ac059fd92ad8 /fs/nfsd/lockd.c
parent12127498c8f5e479df15ee374a0932f5659df49e (diff)
downloadlinux-9a8db97e7756119689c93c431e8b8324080f5625.tar.bz2
knfsd: lockd: nfsd4: use same grace period for lockd and nfsd4
Both lockd and (in the nfsv4 case) nfsd enforce a "grace period" after reboot, during which clients may reclaim locks from the previous server instance, but may not acquire new locks. Currently the lockd and nfsd enforce grace periods of different lengths. This may cause problems when we reboot a server with both v2/v3 and v4 clients. For example, if the lockd grace period is shorter (as is likely the case), then a v3 client might acquire a new lock that conflicts with a lock already held (but not yet reclaimed) by a v4 client. This patch calculates a lease time that lockd and nfsd can both use. Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nfsd/lockd.c')
-rw-r--r--fs/nfsd/lockd.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfsd/lockd.c b/fs/nfsd/lockd.c
index 221acd1f11f6..9e4a568a5013 100644
--- a/fs/nfsd/lockd.c
+++ b/fs/nfsd/lockd.c
@@ -65,6 +65,7 @@ nlm_fclose(struct file *filp)
static struct nlmsvc_binding nfsd_nlm_ops = {
.fopen = nlm_fopen, /* open file for locking */
.fclose = nlm_fclose, /* close file */
+ .get_grace_period = get_nfs4_grace_period,
};
void