diff options
Diffstat (limited to 'fs/gfs2/glock.c')
| -rw-r--r-- | fs/gfs2/glock.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 6b23399eaee0..630c6550eacf 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -542,7 +542,7 @@ restart: * some reason. If this holder is the head of the list, it * means we have a blocked holder at the head, so return 1. */ - if (gh->gh_list.prev == &gl->gl_holders) + if (list_is_first(&gh->gh_list, &gl->gl_holders)) return 1; do_error(gl, 0); break; @@ -669,6 +669,8 @@ static void finish_xmote(struct gfs2_glock *gl, unsigned int ret) /* Check for state != intended state */ if (unlikely(state != gl->gl_target)) { + if (gh && (ret & LM_OUT_CANCELED)) + gfs2_holder_wake(gh); if (gh && !test_bit(GLF_DEMOTE_IN_PROGRESS, &gl->gl_flags)) { /* move to back of queue and try next entry */ if (ret & LM_OUT_CANCELED) { @@ -1259,7 +1261,6 @@ void __gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, u16 flags, gh->gh_owner_pid = get_pid(task_pid(current)); gh->gh_state = state; gh->gh_flags = flags; - gh->gh_error = 0; gh->gh_iflags = 0; gfs2_glock_hold(gl); } @@ -1565,6 +1566,7 @@ int gfs2_glock_nq(struct gfs2_holder *gh) if (test_bit(GLF_LRU, &gl->gl_flags)) gfs2_glock_remove_from_lru(gl); + gh->gh_error = 0; spin_lock(&gl->gl_lockref.lock); add_to_queue(gh); if (unlikely((LM_FLAG_NOEXP & gh->gh_flags) && @@ -1691,6 +1693,14 @@ void gfs2_glock_dq(struct gfs2_holder *gh) struct gfs2_glock *gl = gh->gh_gl; spin_lock(&gl->gl_lockref.lock); + if (list_is_first(&gh->gh_list, &gl->gl_holders) && + !test_bit(HIF_HOLDER, &gh->gh_iflags)) { + spin_unlock(&gl->gl_lockref.lock); + gl->gl_name.ln_sbd->sd_lockstruct.ls_ops->lm_cancel(gl); + wait_on_bit(&gh->gh_iflags, HIF_WAIT, TASK_UNINTERRUPTIBLE); + spin_lock(&gl->gl_lockref.lock); + } + __gfs2_glock_dq(gh); spin_unlock(&gl->gl_lockref.lock); } |