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authorYan, Zheng <zyan@redhat.com>2014-10-14 10:33:35 +0800
committerIlya Dryomov <idryomov@redhat.com>2014-12-17 20:09:49 +0300
commit9280be24dc9c7aaee230de3ed33f8357386de9a2 (patch)
tree5ff0cf8f4326a05d72d8aef60b75ab631af07bc9 /include/linux/ceph/ceph_fs.h
parentb2776bf7149bddd1f4161f14f79520f17fc1d71d (diff)
ceph: fix file lock interruption
When a lock operation is interrupted, current code sends a unlock request to MDS to undo the lock operation. This method does not work as expected because the unlock request can drop locks that have already been acquired. The fix is use the newly introduced CEPH_LOCK_FCNTL_INTR/CEPH_LOCK_FLOCK_INTR requests to interrupt blocked file lock request. These requests do not drop locks that have alread been acquired, they only interrupt blocked file lock request. Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'include/linux/ceph/ceph_fs.h')
-rw-r--r--include/linux/ceph/ceph_fs.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 3c97d5e9b951..31d8b98b7f96 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -522,8 +522,11 @@ struct ceph_mds_reply_dirfrag {
__le32 dist[];
} __attribute__ ((packed));
-#define CEPH_LOCK_FCNTL 1
-#define CEPH_LOCK_FLOCK 2
+#define CEPH_LOCK_FCNTL 1
+#define CEPH_LOCK_FLOCK 2
+#define CEPH_LOCK_FCNTL_INTR 3
+#define CEPH_LOCK_FLOCK_INTR 4
+
#define CEPH_LOCK_SHARED 1
#define CEPH_LOCK_EXCL 2