From 23ea4032c875fc75c2363a9bcaba87cfb134ff68 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 21 Jun 2005 15:14:01 +1000 Subject: [XFS] rename various pagebuf symbols to xfsbuf SGI-PV: 908809 SGI-Modid: xfs-linux:xfs-kern:192348a Signed-off-by: Christoph Hellwig Signed-off-by: Nathan Scott --- fs/xfs/linux-2.6/xfs_buf.c | 143 ++++++++++++++++++++++++--------------------- 1 file changed, 77 insertions(+), 66 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_buf.c') diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 997963e53622..f5676ed5136d 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); } -- cgit v1.2.3-55-g7522