From e5e8d2ac72eac71ef3e34b52337910dfa39ca4c6 Mon Sep 17 00:00:00 2001
From: Chaskiel M Grundman <cg2v@andrew.cmu.edu>
Date: Tue, 13 Jun 2006 17:00:38 +0000
Subject: [PATCH] STABLE14-linux-enroll-locks-20060403

FIXES 25037

enroll our locks in the linux kernels' lock management


(cherry picked from commit 62e28d9a0a6adc6e1f3c2938bfc530b54bea4158)
---
 src/afs/LINUX/osi_vnodeops.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/afs/LINUX/osi_vnodeops.c b/src/afs/LINUX/osi_vnodeops.c
index 468a7e5e80..8bbb81487b 100644
--- a/src/afs/LINUX/osi_vnodeops.c
+++ b/src/afs/LINUX/osi_vnodeops.c
@@ -463,6 +463,25 @@ afs_linux_lock(struct file *fp, int cmd, struct file_lock *flp)
     code = afs_lockctl(vcp, &flock, cmd, credp);
     AFS_GUNLOCK();
 
+#ifdef AFS_LINUX24_ENV
+    if (code == 0 && (cmd == F_SETLK || cmd == F_SETLKW)) {
+       struct file_lock flp2;
+       flp2 = *flp;
+#ifdef AFS_LINUX26_ENV
+       flp2.fl_flags &=~ FL_SLEEP;
+#endif
+       code = posix_lock_file(fp, &flp2);
+       osi_Assert(code != -EAGAIN); /* there should be no conflicts */
+       if (code) {
+           struct AFS_FLOCK flock2;
+           flock2 = flock;
+           flock2.l_type = F_UNLCK;
+           AFS_GLOCK();
+           afs_lockctl(vcp, &flock2, F_SETLK, credp);
+           AFS_GUNLOCK();
+       }
+    }
+#endif
     /* Convert flock back to Linux's file_lock */
     flp->fl_type = flock.l_type;
     flp->fl_pid = flock.l_pid;