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authorLinus Torvalds <torvalds@linux-foundation.org>2012-04-23 18:22:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-23 18:22:42 -0700
commit721b024bd47c1e4b995e7eeb6455b714b817ad60 (patch)
tree15e3374ad054cc9ecbea56a86c1ff0b3f94a3b1c /fs
parentaca50bd3b4c4bb5528a1878158ba7abce41de534 (diff)
parent53ad1c980d4fb450722a575ca17c188808939340 (diff)
downloadlinux-linaro-stable-721b024bd47c1e4b995e7eeb6455b714b817ad60.tar.gz
Merge tag 'dlm-fixes-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm fixes from David Teigland: "This includes one short patch fixing the behavior of the QUECVT flag, which the gfs2 folks are waiting on." * tag 'dlm-fixes-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: dlm: fix QUECVT when convert queue is empty
Diffstat (limited to 'fs')
-rw-r--r--fs/dlm/lock.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index fa5c07d51dcc..4c58d4a3adc4 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1737,6 +1737,18 @@ static int _can_be_granted(struct dlm_rsb *r, struct dlm_lkb *lkb, int now)
return 1;
/*
+ * Even if the convert is compat with all granted locks,
+ * QUECVT forces it behind other locks on the convert queue.
+ */
+
+ if (now && conv && (lkb->lkb_exflags & DLM_LKF_QUECVT)) {
+ if (list_empty(&r->res_convertqueue))
+ return 1;
+ else
+ goto out;
+ }
+
+ /*
* The NOORDER flag is set to avoid the standard vms rules on grant
* order.
*/