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authorDavid Teigland <teigland@redhat.com>2008-05-20 12:18:10 -0500
committerDavid Teigland <teigland@redhat.com>2008-07-14 13:56:59 -0500
commit329fc4c37212588091b64bdf09afaeb18642aae2 (patch)
tree1df9d0ed055afb2f46669142472f7c88554a93bc /fs/dlm/lock.c
parent254ae43ab8d7877c980fca3636624e0777a70fa4 (diff)
downloadlinux-linaro-stable-329fc4c37212588091b64bdf09afaeb18642aae2.tar.gz
dlm: fix basts for granted CW waiting PR/CW
The fix in commit 3650925893469ccb03dbcc6a440c5d363350f591 was addressing the case of a granted PR lock with waiting PR and CW locks. It's a special case that requires forcing a CW bast. However, that forced CW bast was incorrectly applying to a second condition where the granted lock was CW. So, the holder of a CW lock could receive an extraneous CW bast instead of a PR bast. This fix narrows the original special case to what was intended. Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm/lock.c')
-rw-r--r--fs/dlm/lock.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 2d3d1027ce2b..7ba9586a0943 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1782,7 +1782,8 @@ static void grant_pending_locks(struct dlm_rsb *r)
list_for_each_entry_safe(lkb, s, &r->res_grantqueue, lkb_statequeue) {
if (lkb->lkb_bastfn && lock_requires_bast(lkb, high, cw)) {
- if (cw && high == DLM_LOCK_PR)
+ if (cw && high == DLM_LOCK_PR &&
+ lkb->lkb_grmode == DLM_LOCK_PR)
queue_bast(r, lkb, DLM_LOCK_CW);
else
queue_bast(r, lkb, high);