[lustre-devel] [PATCH 12/28] lustre: mdc: remote object support getattr from cache

James Simmons jsimmons at infradead.org
Sun Nov 15 16:59:45 PST 2020

From: Lai Siyao <lai.siyao at whamcloud.com>

For historical reason, IT_GETATTR lock revalidate matches
LOOKUP|UPDATE|PERM lock bits because for MDS < 2.4, permission is
protected by LOOKUP lock, but this will cause remote object not
able to match the cached lock because LOOKUP and UPDATE lock are
fetched separately.

Add sanity 803b, and rename 803 to 803a.

WC-bug-id: https://jira.whamcloud.com/browse/LU-13437
Lustre-commit: 72a1ca996e3a35 ("LU-13437 mdc: remote object support getattr from cache")
Signed-off-by: Lai Siyao <lai.siyao at whamcloud.com>
Reviewed-on: https://review.whamcloud.com/40218
Reviewed-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-by: Mike Pershin <mpershin at whamcloud.com>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
 fs/lustre/mdc/mdc_locks.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/lustre/mdc/mdc_locks.c b/fs/lustre/mdc/mdc_locks.c
index 72ee070..a82e8ca 100644
--- a/fs/lustre/mdc/mdc_locks.c
+++ b/fs/lustre/mdc/mdc_locks.c
@@ -1235,7 +1235,6 @@ int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
 			 * by LOOKUP lock, so it needs to match all bits here.
 			policy.l_inodebits.bits = MDS_INODELOCK_UPDATE |
 		case IT_READDIR:

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