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authorPatrick McHardy <kaber@trash.net>2013-03-31 18:10:34 +0200
committerPatrick McHardy <kaber@trash.net>2013-03-31 18:10:34 +0200
commit70711d223510ba1773cfe1d7770a56141c815ff8 (patch)
tree4a71f38a3a554ddecaa31b7d8c6bc49b7d1705b4 /fs/gfs2/lock_dlm.c
parentd53b4ed072d9779cdf53582c46436dec06d0961f (diff)
parent19f949f52599ba7c3f67a5897ac6be14bfcb1200 (diff)
Merge tag 'v3.8' of /home/kaber/src/repos/linux
Linux 3.8 Signed-off-by: Patrick McHardy <kaber@trash.net> Conflicts: include/linux/Kbuild include/linux/netlink.h
Diffstat (limited to 'fs/gfs2/lock_dlm.c')
-rw-r--r--fs/gfs2/lock_dlm.c28
1 files changed, 22 insertions, 6 deletions
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 4a38db739ca..9802de0f85e 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;
@@ -239,6 +241,7 @@ static u32 make_flags(struct gfs2_glock *gl, const unsigned int gfs_flags,
static void gfs2_reverse_hex(char *c, u64 value)
{
+ *c = '0';
while (value) {
*c-- = hex_asc[value & 0x0f];
value >>= 4;
@@ -278,6 +281,7 @@ static void gdlm_put_lock(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
+ int lvb_needs_unlock = 0;
int error;
if (gl->gl_lksb.sb_lkid == 0) {
@@ -289,6 +293,18 @@ 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 (gl->gl_lksb.sb_lvbptr && (gl->gl_state == LM_ST_EXCLUSIVE))
+ lvb_needs_unlock = 1;
+
+ if (test_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags) &&
+ !lvb_needs_unlock) {
+ gfs2_glock_free(gl);
+ return;
+ }
+
error = dlm_unlock(ls->ls_dlm, gl->gl_lksb.sb_lkid, DLM_LKF_VALBLK,
NULL, gl);
if (error) {
@@ -1289,7 +1305,7 @@ static void gdlm_unmount(struct gfs2_sbd *sdp)
spin_lock(&ls->ls_recover_spin);
set_bit(DFL_UNMOUNT, &ls->ls_recover_flags);
spin_unlock(&ls->ls_recover_spin);
- flush_delayed_work_sync(&sdp->sd_control_work);
+ flush_delayed_work(&sdp->sd_control_work);
/* mounted_lock and control_lock will be purged in dlm recovery */
release: