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-rw-r--r--fs/xfs/linux-2.6/xfs_buf.c143
1 files changed, 77 insertions, 66 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 997963e5362..f5676ed5136 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -61,12 +61,13 @@
* File wide globals
*/
-STATIC kmem_cache_t *pagebuf_cache;
+STATIC kmem_cache_t *pagebuf_zone;
STATIC kmem_shaker_t pagebuf_shake;
-STATIC int pagebuf_daemon_wakeup(int, unsigned int);
+STATIC int xfsbufd_wakeup(int, unsigned int);
STATIC void pagebuf_delwri_queue(xfs_buf_t *, int);
-STATIC struct workqueue_struct *pagebuf_logio_workqueue;
-STATIC struct workqueue_struct *pagebuf_dataio_workqueue;
+
+STATIC struct workqueue_struct *xfslogd_workqueue;
+STATIC struct workqueue_struct *xfsdatad_workqueue;
/*
* Pagebuf debugging
@@ -123,9 +124,9 @@ ktrace_t *pagebuf_trace_buf;
#define pagebuf_allocate(flags) \
- kmem_zone_alloc(pagebuf_cache, pb_to_km(flags))
+ kmem_zone_alloc(pagebuf_zone, pb_to_km(flags))
#define pagebuf_deallocate(pb) \
- kmem_zone_free(pagebuf_cache, (pb));
+ kmem_zone_free(pagebuf_zone, (pb));
/*
* Page Region interfaces.
@@ -425,7 +426,7 @@ _pagebuf_lookup_pages(
__FUNCTION__, gfp_mask);
XFS_STATS_INC(pb_page_retries);
- pagebuf_daemon_wakeup(0, gfp_mask);
+ xfsbufd_wakeup(0, gfp_mask);
blk_congestion_wait(WRITE, HZ/50);
goto retry;
}
@@ -1136,8 +1137,8 @@ pagebuf_iodone(
if ((pb->pb_iodone) || (pb->pb_flags & PBF_ASYNC)) {
if (schedule) {
INIT_WORK(&pb->pb_iodone_work, pagebuf_iodone_work, pb);
- queue_work(dataio ? pagebuf_dataio_workqueue :
- pagebuf_logio_workqueue, &pb->pb_iodone_work);
+ queue_work(dataio ? xfsdatad_workqueue :
+ xfslogd_workqueue, &pb->pb_iodone_work);
} else {
pagebuf_iodone_work(pb);
}
@@ -1742,27 +1743,27 @@ pagebuf_runall_queues(
}
/* Defines for pagebuf daemon */
-STATIC DECLARE_COMPLETION(pagebuf_daemon_done);
-STATIC struct task_struct *pagebuf_daemon_task;
-STATIC int pagebuf_daemon_active;
-STATIC int force_flush;
-STATIC int force_sleep;
+STATIC DECLARE_COMPLETION(xfsbufd_done);
+STATIC struct task_struct *xfsbufd_task;
+STATIC int xfsbufd_active;
+STATIC int xfsbufd_force_flush;
+STATIC int xfsbufd_force_sleep;
STATIC int
-pagebuf_daemon_wakeup(
+xfsbufd_wakeup(
int priority,
unsigned int mask)
{
- if (force_sleep)
+ if (xfsbufd_force_sleep)
return 0;
- force_flush = 1;
+ xfsbufd_force_flush = 1;
barrier();
- wake_up_process(pagebuf_daemon_task);
+ wake_up_process(xfsbufd_task);
return 0;
}
STATIC int
-pagebuf_daemon(
+xfsbufd(
void *data)
{
struct list_head tmp;
@@ -1774,17 +1775,17 @@ pagebuf_daemon(
daemonize("xfsbufd");
current->flags |= PF_MEMALLOC;
- pagebuf_daemon_task = current;
- pagebuf_daemon_active = 1;
+ xfsbufd_task = current;
+ xfsbufd_active = 1;
barrier();
INIT_LIST_HEAD(&tmp);
do {
if (unlikely(current->flags & PF_FREEZE)) {
- force_sleep = 1;
+ xfsbufd_force_sleep = 1;
refrigerator(PF_FREEZE);
} else {
- force_sleep = 0;
+ xfsbufd_force_sleep = 0;
}
set_current_state(TASK_INTERRUPTIBLE);
@@ -1797,7 +1798,7 @@ pagebuf_daemon(
ASSERT(pb->pb_flags & PBF_DELWRI);
if (!pagebuf_ispin(pb) && !pagebuf_cond_lock(pb)) {
- if (!force_flush &&
+ if (!xfsbufd_force_flush &&
time_before(jiffies,
pb->pb_queuetime + age)) {
pagebuf_unlock(pb);
@@ -1824,10 +1825,10 @@ pagebuf_daemon(
if (as_list_len > 0)
purge_addresses();
- force_flush = 0;
- } while (pagebuf_daemon_active);
+ xfsbufd_force_flush = 0;
+ } while (xfsbufd_active);
- complete_and_exit(&pagebuf_daemon_done, 0);
+ complete_and_exit(&xfsbufd_done, 0);
}
/*
@@ -1844,8 +1845,8 @@ xfs_flush_buftarg(
xfs_buf_t *pb, *n;
int pincount = 0;
- pagebuf_runall_queues(pagebuf_dataio_workqueue);
- pagebuf_runall_queues(pagebuf_logio_workqueue);
+ pagebuf_runall_queues(xfsdatad_workqueue);
+ pagebuf_runall_queues(xfslogd_workqueue);
INIT_LIST_HEAD(&tmp);
spin_lock(&pbd_delwrite_lock);
@@ -1898,43 +1899,43 @@ xfs_flush_buftarg(
}
STATIC int
-pagebuf_daemon_start(void)
+xfs_buf_daemons_start(void)
{
- int rval;
+ int error = -ENOMEM;
- pagebuf_logio_workqueue = create_workqueue("xfslogd");
- if (!pagebuf_logio_workqueue)
- return -ENOMEM;
+ xfslogd_workqueue = create_workqueue("xfslogd");
+ if (!xfslogd_workqueue)
+ goto out;
- pagebuf_dataio_workqueue = create_workqueue("xfsdatad");
- if (!pagebuf_dataio_workqueue) {
- destroy_workqueue(pagebuf_logio_workqueue);
- return -ENOMEM;
- }
+ xfsdatad_workqueue = create_workqueue("xfsdatad");
+ if (!xfsdatad_workqueue)
+ goto out_destroy_xfslogd_workqueue;
- rval = kernel_thread(pagebuf_daemon, NULL, CLONE_FS|CLONE_FILES);
- if (rval < 0) {
- destroy_workqueue(pagebuf_logio_workqueue);
- destroy_workqueue(pagebuf_dataio_workqueue);
- }
+ error = kernel_thread(xfsbufd, NULL, CLONE_FS|CLONE_FILES);
+ if (error < 0)
+ goto out_destroy_xfsdatad_workqueue;
+ return 0;
- return rval;
+ out_destroy_xfsdatad_workqueue:
+ destroy_workqueue(xfsdatad_workqueue);
+ out_destroy_xfslogd_workqueue:
+ destroy_workqueue(xfslogd_workqueue);
+ out:
+ return error;
}
/*
- * pagebuf_daemon_stop
- *
* Note: do not mark as __exit, it is called from pagebuf_terminate.
*/
STATIC void
-pagebuf_daemon_stop(void)
+xfs_buf_daemons_stop(void)
{
- pagebuf_daemon_active = 0;
+ xfsbufd_active = 0;
barrier();
- wait_for_completion(&pagebuf_daemon_done);
+ wait_for_completion(&xfsbufd_done);
- destroy_workqueue(pagebuf_logio_workqueue);
- destroy_workqueue(pagebuf_dataio_workqueue);
+ destroy_workqueue(xfslogd_workqueue);
+ destroy_workqueue(xfsdatad_workqueue);
}
/*
@@ -1944,27 +1945,37 @@ pagebuf_daemon_stop(void)
int __init
pagebuf_init(void)
{
- pagebuf_cache = kmem_cache_create("xfs_buf_t", sizeof(xfs_buf_t), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
- if (pagebuf_cache == NULL) {
- printk("XFS: couldn't init xfs_buf_t cache\n");
- pagebuf_terminate();
- return -ENOMEM;
- }
+ int error = -ENOMEM;
+
+ pagebuf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buf");
+ if (!pagebuf_zone)
+ goto out;
#ifdef PAGEBUF_TRACE
pagebuf_trace_buf = ktrace_alloc(PAGEBUF_TRACE_SIZE, KM_SLEEP);
#endif
- pagebuf_daemon_start();
+ error = xfs_buf_daemons_start();
+ if (!error)
+ goto out_free_buf_zone;
- pagebuf_shake = kmem_shake_register(pagebuf_daemon_wakeup);
- if (pagebuf_shake == NULL) {
- pagebuf_terminate();
- return -ENOMEM;
+ pagebuf_shake = kmem_shake_register(xfsbufd_wakeup);
+ if (!pagebuf_shake) {
+ error = -ENOMEM;
+ goto out_stop_daemons;
}
return 0;
+
+ out_stop_daemons:
+ xfs_buf_daemons_stop();
+ out_free_buf_zone:
+#ifdef PAGEBUF_TRACE
+ ktrace_free(pagebuf_trace_buf);
+#endif
+ kmem_zone_destroy(pagebuf_zone);
+ out:
+ return error;
}
@@ -1976,12 +1987,12 @@ pagebuf_init(void)
void
pagebuf_terminate(void)
{
- pagebuf_daemon_stop();
+ xfs_buf_daemons_stop();
#ifdef PAGEBUF_TRACE
ktrace_free(pagebuf_trace_buf);
#endif
- kmem_zone_destroy(pagebuf_cache);
+ kmem_zone_destroy(pagebuf_zone);
kmem_shake_deregister(pagebuf_shake);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-13 13:27:06 +0000