[XFS] rename various pagebuf symbols to xfsbuf
SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:192348a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Christoph Hellwig
Nathan Scott
parent
9ba91bd365
commit
23ea4032c8
@ -61,12 +61,13 @@
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* File wide globals
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*/
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STATIC kmem_cache_t *pagebuf_cache;
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STATIC kmem_cache_t *pagebuf_zone;
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STATIC kmem_shaker_t pagebuf_shake;
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STATIC int pagebuf_daemon_wakeup(int, unsigned int);
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STATIC int xfsbufd_wakeup(int, unsigned int);
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STATIC void pagebuf_delwri_queue(xfs_buf_t *, int);
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STATIC struct workqueue_struct *pagebuf_logio_workqueue;
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STATIC struct workqueue_struct *pagebuf_dataio_workqueue;
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STATIC struct workqueue_struct *xfslogd_workqueue;
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STATIC struct workqueue_struct *xfsdatad_workqueue;
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/*
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* Pagebuf debugging
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@ -123,9 +124,9 @@ ktrace_t *pagebuf_trace_buf;
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#define pagebuf_allocate(flags) \
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kmem_zone_alloc(pagebuf_cache, pb_to_km(flags))
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kmem_zone_alloc(pagebuf_zone, pb_to_km(flags))
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#define pagebuf_deallocate(pb) \
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kmem_zone_free(pagebuf_cache, (pb));
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kmem_zone_free(pagebuf_zone, (pb));
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/*
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* Page Region interfaces.
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@ -425,7 +426,7 @@ _pagebuf_lookup_pages(
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__FUNCTION__, gfp_mask);
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XFS_STATS_INC(pb_page_retries);
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pagebuf_daemon_wakeup(0, gfp_mask);
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xfsbufd_wakeup(0, gfp_mask);
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blk_congestion_wait(WRITE, HZ/50);
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goto retry;
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}
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@ -1136,8 +1137,8 @@ pagebuf_iodone(
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if ((pb->pb_iodone) || (pb->pb_flags & PBF_ASYNC)) {
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if (schedule) {
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INIT_WORK(&pb->pb_iodone_work, pagebuf_iodone_work, pb);
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queue_work(dataio ? pagebuf_dataio_workqueue :
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pagebuf_logio_workqueue, &pb->pb_iodone_work);
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queue_work(dataio ? xfsdatad_workqueue :
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xfslogd_workqueue, &pb->pb_iodone_work);
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} else {
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pagebuf_iodone_work(pb);
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}
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@ -1742,27 +1743,27 @@ pagebuf_runall_queues(
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}
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/* Defines for pagebuf daemon */
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STATIC DECLARE_COMPLETION(pagebuf_daemon_done);
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STATIC struct task_struct *pagebuf_daemon_task;
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STATIC int pagebuf_daemon_active;
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STATIC int force_flush;
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STATIC int force_sleep;
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STATIC DECLARE_COMPLETION(xfsbufd_done);
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STATIC struct task_struct *xfsbufd_task;
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STATIC int xfsbufd_active;
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STATIC int xfsbufd_force_flush;
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STATIC int xfsbufd_force_sleep;
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STATIC int
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pagebuf_daemon_wakeup(
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xfsbufd_wakeup(
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int priority,
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unsigned int mask)
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{
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if (force_sleep)
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if (xfsbufd_force_sleep)
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return 0;
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force_flush = 1;
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xfsbufd_force_flush = 1;
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barrier();
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wake_up_process(pagebuf_daemon_task);
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wake_up_process(xfsbufd_task);
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return 0;
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}
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STATIC int
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pagebuf_daemon(
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xfsbufd(
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void *data)
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{
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struct list_head tmp;
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@ -1774,17 +1775,17 @@ pagebuf_daemon(
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daemonize("xfsbufd");
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current->flags |= PF_MEMALLOC;
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pagebuf_daemon_task = current;
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pagebuf_daemon_active = 1;
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xfsbufd_task = current;
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xfsbufd_active = 1;
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barrier();
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INIT_LIST_HEAD(&tmp);
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do {
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if (unlikely(current->flags & PF_FREEZE)) {
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force_sleep = 1;
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xfsbufd_force_sleep = 1;
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refrigerator(PF_FREEZE);
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} else {
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force_sleep = 0;
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xfsbufd_force_sleep = 0;
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}
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set_current_state(TASK_INTERRUPTIBLE);
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@ -1797,7 +1798,7 @@ pagebuf_daemon(
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ASSERT(pb->pb_flags & PBF_DELWRI);
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if (!pagebuf_ispin(pb) && !pagebuf_cond_lock(pb)) {
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if (!force_flush &&
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if (!xfsbufd_force_flush &&
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time_before(jiffies,
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pb->pb_queuetime + age)) {
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pagebuf_unlock(pb);
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@ -1824,10 +1825,10 @@ pagebuf_daemon(
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if (as_list_len > 0)
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purge_addresses();
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force_flush = 0;
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} while (pagebuf_daemon_active);
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xfsbufd_force_flush = 0;
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} while (xfsbufd_active);
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complete_and_exit(&pagebuf_daemon_done, 0);
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complete_and_exit(&xfsbufd_done, 0);
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}
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/*
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@ -1844,8 +1845,8 @@ xfs_flush_buftarg(
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xfs_buf_t *pb, *n;
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int pincount = 0;
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pagebuf_runall_queues(pagebuf_dataio_workqueue);
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pagebuf_runall_queues(pagebuf_logio_workqueue);
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pagebuf_runall_queues(xfsdatad_workqueue);
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pagebuf_runall_queues(xfslogd_workqueue);
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INIT_LIST_HEAD(&tmp);
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spin_lock(&pbd_delwrite_lock);
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@ -1898,43 +1899,43 @@ xfs_flush_buftarg(
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}
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STATIC int
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pagebuf_daemon_start(void)
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xfs_buf_daemons_start(void)
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{
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int rval;
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int error = -ENOMEM;
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pagebuf_logio_workqueue = create_workqueue("xfslogd");
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if (!pagebuf_logio_workqueue)
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return -ENOMEM;
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xfslogd_workqueue = create_workqueue("xfslogd");
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if (!xfslogd_workqueue)
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goto out;
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pagebuf_dataio_workqueue = create_workqueue("xfsdatad");
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if (!pagebuf_dataio_workqueue) {
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destroy_workqueue(pagebuf_logio_workqueue);
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return -ENOMEM;
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}
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xfsdatad_workqueue = create_workqueue("xfsdatad");
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if (!xfsdatad_workqueue)
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goto out_destroy_xfslogd_workqueue;
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rval = kernel_thread(pagebuf_daemon, NULL, CLONE_FS|CLONE_FILES);
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if (rval < 0) {
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destroy_workqueue(pagebuf_logio_workqueue);
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destroy_workqueue(pagebuf_dataio_workqueue);
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}
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error = kernel_thread(xfsbufd, NULL, CLONE_FS|CLONE_FILES);
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if (error < 0)
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goto out_destroy_xfsdatad_workqueue;
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return 0;
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return rval;
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out_destroy_xfsdatad_workqueue:
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destroy_workqueue(xfsdatad_workqueue);
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out_destroy_xfslogd_workqueue:
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destroy_workqueue(xfslogd_workqueue);
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out:
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return error;
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}
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/*
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* pagebuf_daemon_stop
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*
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* Note: do not mark as __exit, it is called from pagebuf_terminate.
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*/
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STATIC void
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pagebuf_daemon_stop(void)
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xfs_buf_daemons_stop(void)
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{
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pagebuf_daemon_active = 0;
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xfsbufd_active = 0;
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barrier();
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wait_for_completion(&pagebuf_daemon_done);
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wait_for_completion(&xfsbufd_done);
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destroy_workqueue(pagebuf_logio_workqueue);
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destroy_workqueue(pagebuf_dataio_workqueue);
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destroy_workqueue(xfslogd_workqueue);
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destroy_workqueue(xfsdatad_workqueue);
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}
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/*
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@ -1944,27 +1945,37 @@ pagebuf_daemon_stop(void)
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int __init
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pagebuf_init(void)
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{
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pagebuf_cache = kmem_cache_create("xfs_buf_t", sizeof(xfs_buf_t), 0,
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SLAB_HWCACHE_ALIGN, NULL, NULL);
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if (pagebuf_cache == NULL) {
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printk("XFS: couldn't init xfs_buf_t cache\n");
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pagebuf_terminate();
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return -ENOMEM;
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}
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int error = -ENOMEM;
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pagebuf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buf");
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if (!pagebuf_zone)
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goto out;
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#ifdef PAGEBUF_TRACE
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pagebuf_trace_buf = ktrace_alloc(PAGEBUF_TRACE_SIZE, KM_SLEEP);
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#endif
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pagebuf_daemon_start();
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error = xfs_buf_daemons_start();
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if (!error)
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goto out_free_buf_zone;
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pagebuf_shake = kmem_shake_register(pagebuf_daemon_wakeup);
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if (pagebuf_shake == NULL) {
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pagebuf_terminate();
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return -ENOMEM;
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pagebuf_shake = kmem_shake_register(xfsbufd_wakeup);
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if (!pagebuf_shake) {
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error = -ENOMEM;
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goto out_stop_daemons;
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}
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return 0;
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out_stop_daemons:
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xfs_buf_daemons_stop();
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out_free_buf_zone:
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#ifdef PAGEBUF_TRACE
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ktrace_free(pagebuf_trace_buf);
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#endif
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kmem_zone_destroy(pagebuf_zone);
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out:
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return error;
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}
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@ -1976,12 +1987,12 @@ pagebuf_init(void)
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void
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pagebuf_terminate(void)
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{
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pagebuf_daemon_stop();
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xfs_buf_daemons_stop();
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#ifdef PAGEBUF_TRACE
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ktrace_free(pagebuf_trace_buf);
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#endif
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kmem_zone_destroy(pagebuf_cache);
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kmem_zone_destroy(pagebuf_zone);
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kmem_shake_deregister(pagebuf_shake);
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}
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