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path: root/fs/gfs2/lock_dlm.c
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Diffstat (limited to 'fs/gfs2/lock_dlm.c')
-rw-r--r--fs/gfs2/lock_dlm.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 0fb6539b0c8c..8dad6b093716 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -120,8 +120,8 @@ static void gdlm_ast(void *arg)
gfs2_update_reply_times(gl);
BUG_ON(gl->gl_lksb.sb_flags & DLM_SBF_DEMOTED);
- if (gl->gl_lksb.sb_flags & DLM_SBF_VALNOTVALID)
- memset(gl->gl_lvb, 0, GDLM_LVB_SIZE);
+ if ((gl->gl_lksb.sb_flags & DLM_SBF_VALNOTVALID) && gl->gl_lksb.sb_lvbptr)
+ memset(gl->gl_lksb.sb_lvbptr, 0, GDLM_LVB_SIZE);
switch (gl->gl_lksb.sb_status) {
case -DLM_EUNLOCK: /* Unlocked, so glock can be freed */
@@ -203,8 +203,10 @@ static int make_mode(const unsigned int lmstate)
static u32 make_flags(struct gfs2_glock *gl, const unsigned int gfs_flags,
const int req)
{
- u32 lkf = DLM_LKF_VALBLK;
- u32 lkid = gl->gl_lksb.sb_lkid;
+ u32 lkf = 0;
+
+ if (gl->gl_lksb.sb_lvbptr)
+ lkf |= DLM_LKF_VALBLK;
if (gfs_flags & LM_FLAG_TRY)
lkf |= DLM_LKF_NOQUEUE;
@@ -228,7 +230,7 @@ static u32 make_flags(struct gfs2_glock *gl, const unsigned int gfs_flags,
BUG();
}
- if (lkid != 0) {
+ if (gl->gl_lksb.sb_lkid != 0) {
lkf |= DLM_LKF_CONVERT;
if (test_bit(GLF_BLOCKING, &gl->gl_flags))
lkf |= DLM_LKF_QUECVT;
@@ -289,6 +291,14 @@ static void gdlm_put_lock(struct gfs2_glock *gl)
gfs2_glstats_inc(gl, GFS2_LKS_DCOUNT);
gfs2_sbstats_inc(gl, GFS2_LKS_DCOUNT);
gfs2_update_request_times(gl);
+
+ /* don't want to skip dlm_unlock writing the lvb when lock is ex */
+ if (test_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags) &&
+ gl->gl_lksb.sb_lvbptr && (gl->gl_state != LM_ST_EXCLUSIVE)) {
+ gfs2_glock_free(gl);
+ return;
+ }
+
error = dlm_unlock(ls->ls_dlm, gl->gl_lksb.sb_lkid, DLM_LKF_VALBLK,
NULL, gl);
if (error) {