aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--fs/gfs2/glock.c26
-rw-r--r--fs/gfs2/glops.c19
-rw-r--r--fs/gfs2/trans.c16
3 files changed, 34 insertions, 27 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 173e59ce9ad3..ad8e121427c0 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -167,6 +167,7 @@ static void glock_free(struct gfs2_glock *gl)
static void gfs2_glock_hold(struct gfs2_glock *gl)
{
+ GLOCK_BUG_ON(gl, atomic_read(&gl->gl_ref) == 0);
atomic_inc(&gl->gl_ref);
}
@@ -206,16 +207,15 @@ int gfs2_glock_put(struct gfs2_glock *gl)
atomic_dec(&lru_count);
}
spin_unlock(&lru_lock);
- GLOCK_BUG_ON(gl, !list_empty(&gl->gl_lru));
GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders));
glock_free(gl);
rv = 1;
goto out;
}
- write_unlock(gl_lock_addr(gl->gl_hash));
/* 1 for being hashed, 1 for having state != LM_ST_UNLOCKED */
if (atomic_read(&gl->gl_ref) == 2)
gfs2_glock_schedule_for_reclaim(gl);
+ write_unlock(gl_lock_addr(gl->gl_hash));
out:
return rv;
}
@@ -597,10 +597,11 @@ __acquires(&gl->gl_spin)
GLOCK_BUG_ON(gl, test_bit(GLF_DEMOTE_IN_PROGRESS, &gl->gl_flags));
+ down_read(&gfs2_umount_flush_sem);
if (test_bit(GLF_DEMOTE, &gl->gl_flags) &&
gl->gl_demote_state != gl->gl_state) {
if (find_first_holder(gl))
- goto out;
+ goto out_unlock;
if (nonblock)
goto out_sched;
set_bit(GLF_DEMOTE_IN_PROGRESS, &gl->gl_flags);
@@ -611,23 +612,26 @@ __acquires(&gl->gl_spin)
gfs2_demote_wake(gl);
ret = do_promote(gl);
if (ret == 0)
- goto out;
+ goto out_unlock;
if (ret == 2)
- return;
+ goto out_sem;
gh = find_first_waiter(gl);
gl->gl_target = gh->gh_state;
if (!(gh->gh_flags & (LM_FLAG_TRY | LM_FLAG_TRY_1CB)))
do_error(gl, 0); /* Fail queued try locks */
}
do_xmote(gl, gh, gl->gl_target);
+out_sem:
+ up_read(&gfs2_umount_flush_sem);
return;
out_sched:
gfs2_glock_hold(gl);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
gfs2_glock_put(gl);
-out:
+out_unlock:
clear_bit(GLF_LOCK, &gl->gl_flags);
+ goto out_sem;
}
static void glock_work_func(struct work_struct *work)
@@ -1225,7 +1229,6 @@ void gfs2_glock_cb(struct gfs2_glock *gl, unsigned int state)
void gfs2_glock_complete(struct gfs2_glock *gl, int ret)
{
struct lm_lockstruct *ls = &gl->gl_sbd->sd_lockstruct;
- down_read(&gfs2_umount_flush_sem);
gl->gl_reply = ret;
if (unlikely(test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags))) {
struct gfs2_holder *gh;
@@ -1236,16 +1239,13 @@ void gfs2_glock_complete(struct gfs2_glock *gl, int ret)
((ret & ~LM_OUT_ST_MASK) != 0))
set_bit(GLF_FROZEN, &gl->gl_flags);
spin_unlock(&gl->gl_spin);
- if (test_bit(GLF_FROZEN, &gl->gl_flags)) {
- up_read(&gfs2_umount_flush_sem);
+ if (test_bit(GLF_FROZEN, &gl->gl_flags))
return;
- }
}
set_bit(GLF_REPLY_PENDING, &gl->gl_flags);
gfs2_glock_hold(gl);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
gfs2_glock_put(gl);
- up_read(&gfs2_umount_flush_sem);
}
/**
@@ -1389,12 +1389,10 @@ static void thaw_glock(struct gfs2_glock *gl)
{
if (!test_and_clear_bit(GLF_FROZEN, &gl->gl_flags))
return;
- down_read(&gfs2_umount_flush_sem);
set_bit(GLF_REPLY_PENDING, &gl->gl_flags);
gfs2_glock_hold(gl);
if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
gfs2_glock_put(gl);
- up_read(&gfs2_umount_flush_sem);
}
/**
@@ -1580,7 +1578,7 @@ static const char *gflags2str(char *buf, const unsigned long *gflags)
if (test_bit(GLF_REPLY_PENDING, gflags))
*p++ = 'r';
if (test_bit(GLF_INITIAL, gflags))
- *p++ = 'i';
+ *p++ = 'I';
if (test_bit(GLF_FROZEN, gflags))
*p++ = 'F';
*p = 0;
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index f07ede8cb9ba..a9b7d3a60081 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -37,20 +37,25 @@
static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
- unsigned int blocks;
struct list_head *head = &gl->gl_ail_list;
struct gfs2_bufdata *bd;
struct buffer_head *bh;
- int error;
+ struct gfs2_trans tr;
- blocks = atomic_read(&gl->gl_ail_count);
- if (!blocks)
- return;
+ memset(&tr, 0, sizeof(tr));
+ tr.tr_revokes = atomic_read(&gl->gl_ail_count);
- error = gfs2_trans_begin(sdp, 0, blocks);
- if (gfs2_assert_withdraw(sdp, !error))
+ if (!tr.tr_revokes)
return;
+ /* A shortened, inline version of gfs2_trans_begin() */
+ tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
+ tr.tr_ip = (unsigned long)__builtin_return_address(0);
+ INIT_LIST_HEAD(&tr.tr_list_buf);
+ gfs2_log_reserve(sdp, tr.tr_reserved);
+ BUG_ON(current->journal_info);
+ current->journal_info = &tr;
+
gfs2_log_lock(sdp);
while (!list_empty(head)) {
bd = list_entry(head->next, struct gfs2_bufdata,
diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index 33cd523ec97e..053752d4b27f 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -87,9 +87,11 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
if (!tr->tr_touched) {
gfs2_log_release(sdp, tr->tr_reserved);
- gfs2_glock_dq(&tr->tr_t_gh);
- gfs2_holder_uninit(&tr->tr_t_gh);
- kfree(tr);
+ if (tr->tr_t_gh.gh_gl) {
+ gfs2_glock_dq(&tr->tr_t_gh);
+ gfs2_holder_uninit(&tr->tr_t_gh);
+ kfree(tr);
+ }
return;
}
@@ -105,9 +107,11 @@ void gfs2_trans_end(struct gfs2_sbd *sdp)
}
gfs2_log_commit(sdp, tr);
- gfs2_glock_dq(&tr->tr_t_gh);
- gfs2_holder_uninit(&tr->tr_t_gh);
- kfree(tr);
+ if (tr->tr_t_gh.gh_gl) {
+ gfs2_glock_dq(&tr->tr_t_gh);
+ gfs2_holder_uninit(&tr->tr_t_gh);
+ kfree(tr);
+ }
if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS)
gfs2_log_flush(sdp, NULL);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.