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Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes

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* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Processes waiting on inode glock that no processes are holding
This commit is contained in:
Linus Torvalds 2011-06-07 18:44:10 -07:00
commit d205df9955
1 changed files with 7 additions and 2 deletions
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9
fs/gfs2/glock.c
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@ -663,14 +663,19 @@ static void glock_work_func(struct work_struct *work)
drop_ref = 1;
}
spin_lock(&gl->gl_spin);
if (test_and_clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) &&
if (test_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) &&
gl->gl_state != LM_ST_UNLOCKED &&
gl->gl_demote_state != LM_ST_EXCLUSIVE) {
unsigned long holdtime, now = jiffies;
holdtime = gl->gl_tchange + gl->gl_ops->go_min_hold_time;
if (time_before(now, holdtime))
delay = holdtime - now;
set_bit(delay ? GLF_PENDING_DEMOTE : GLF_DEMOTE, &gl->gl_flags);
if (!delay) {
clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags);
set_bit(GLF_DEMOTE, &gl->gl_flags);
}
}
run_queue(gl, 0);
spin_unlock(&gl->gl_spin);