diff options
Diffstat (limited to 'fs/gfs2/glock.c')
| -rw-r--r-- | fs/gfs2/glock.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 82471c82f024..7175a4d06435 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -334,7 +334,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, gl->gl_state = LM_ST_UNLOCKED; gl->gl_demote_state = LM_ST_EXCLUSIVE; gl->gl_hash = hash; - gl->gl_owner_pid = 0; + gl->gl_owner_pid = NULL; gl->gl_ip = 0; gl->gl_ops = glops; gl->gl_req_gh = NULL; @@ -632,7 +632,7 @@ static void gfs2_glmutex_lock(struct gfs2_glock *gl) wait_on_holder(&gh); gfs2_holder_uninit(&gh); } else { - gl->gl_owner_pid = current->pid; + gl->gl_owner_pid = get_pid(task_pid(current)); gl->gl_ip = (unsigned long)__builtin_return_address(0); spin_unlock(&gl->gl_spin); } @@ -653,7 +653,7 @@ static int gfs2_glmutex_trylock(struct gfs2_glock *gl) if (test_and_set_bit(GLF_LOCK, &gl->gl_flags)) { acquired = 0; } else { - gl->gl_owner_pid = current->pid; + gl->gl_owner_pid = get_pid(task_pid(current)); gl->gl_ip = (unsigned long)__builtin_return_address(0); } spin_unlock(&gl->gl_spin); @@ -669,12 +669,17 @@ static int gfs2_glmutex_trylock(struct gfs2_glock *gl) static void gfs2_glmutex_unlock(struct gfs2_glock *gl) { + struct pid *pid; + spin_lock(&gl->gl_spin); clear_bit(GLF_LOCK, &gl->gl_flags); - gl->gl_owner_pid = 0; + pid = gl->gl_owner_pid; + gl->gl_owner_pid = NULL; gl->gl_ip = 0; run_queue(gl); spin_unlock(&gl->gl_spin); + + put_pid(pid); } /** @@ -1881,13 +1886,13 @@ static int dump_glock(struct glock_iter *gi, struct gfs2_glock *gl) print_dbg(gi, " gl_ref = %d\n", atomic_read(&gl->gl_ref)); print_dbg(gi, " gl_state = %u\n", gl->gl_state); if (gl->gl_owner_pid) { - gl_owner = find_task_by_pid(gl->gl_owner_pid); + gl_owner = pid_task(gl->gl_owner_pid, PIDTYPE_PID); if (gl_owner) print_dbg(gi, " gl_owner = pid %d (%s)\n", - gl->gl_owner_pid, gl_owner->comm); + pid_nr(gl->gl_owner_pid), gl_owner->comm); else print_dbg(gi, " gl_owner = %d (ended)\n", - gl->gl_owner_pid); + pid_nr(gl->gl_owner_pid)); } else print_dbg(gi, " gl_owner = -1\n"); print_dbg(gi, " gl_ip = %lu\n", gl->gl_ip); |