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authorDavid S. Miller <davem@davemloft.net>2010-04-11 17:53:53 -0400
committerDavid S. Miller <davem@davemloft.net>2010-04-11 17:53:53 -0400
commit871039f02f8ec4ab2e5e9010718caa8e085786f1 (patch)
treef0d2b3127fc48c862967d68c46c2d46668137515 /drivers/block/drbd/drbd_bitmap.c
parente4077e018b5ead3de9951fc01d8bf12eeeeeefed (diff)
parent4a1032faac94ebbf647460ae3e06fc21146eb280 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/stmmac/stmmac_main.c drivers/net/wireless/wl12xx/wl1271_cmd.c drivers/net/wireless/wl12xx/wl1271_main.c drivers/net/wireless/wl12xx/wl1271_spi.c net/core/ethtool.c net/mac80211/scan.c
Diffstat (limited to 'drivers/block/drbd/drbd_bitmap.c')
-rw-r--r--drivers/block/drbd/drbd_bitmap.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index b61057e77882..3390716898d5 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -26,6 +26,7 @@
26#include <linux/vmalloc.h> 26#include <linux/vmalloc.h>
27#include <linux/string.h> 27#include <linux/string.h>
28#include <linux/drbd.h> 28#include <linux/drbd.h>
29#include <linux/slab.h>
29#include <asm/kmap_types.h> 30#include <asm/kmap_types.h>
30#include "drbd_int.h" 31#include "drbd_int.h"
31 32
@@ -66,7 +67,7 @@ struct drbd_bitmap {
66 size_t bm_words; 67 size_t bm_words;
67 size_t bm_number_of_pages; 68 size_t bm_number_of_pages;
68 sector_t bm_dev_capacity; 69 sector_t bm_dev_capacity;
69 struct semaphore bm_change; /* serializes resize operations */ 70 struct mutex bm_change; /* serializes resize operations */
70 71
71 atomic_t bm_async_io; 72 atomic_t bm_async_io;
72 wait_queue_head_t bm_io_wait; 73 wait_queue_head_t bm_io_wait;
@@ -114,7 +115,7 @@ void drbd_bm_lock(struct drbd_conf *mdev, char *why)
114 return; 115 return;
115 } 116 }
116 117
117 trylock_failed = down_trylock(&b->bm_change); 118 trylock_failed = !mutex_trylock(&b->bm_change);
118 119
119 if (trylock_failed) { 120 if (trylock_failed) {
120 dev_warn(DEV, "%s going to '%s' but bitmap already locked for '%s' by %s\n", 121 dev_warn(DEV, "%s going to '%s' but bitmap already locked for '%s' by %s\n",
@@ -125,7 +126,7 @@ void drbd_bm_lock(struct drbd_conf *mdev, char *why)
125 b->bm_task == mdev->receiver.task ? "receiver" : 126 b->bm_task == mdev->receiver.task ? "receiver" :
126 b->bm_task == mdev->asender.task ? "asender" : 127 b->bm_task == mdev->asender.task ? "asender" :
127 b->bm_task == mdev->worker.task ? "worker" : "?"); 128 b->bm_task == mdev->worker.task ? "worker" : "?");
128 down(&b->bm_change); 129 mutex_lock(&b->bm_change);
129 } 130 }
130 if (__test_and_set_bit(BM_LOCKED, &b->bm_flags)) 131 if (__test_and_set_bit(BM_LOCKED, &b->bm_flags))
131 dev_err(DEV, "FIXME bitmap already locked in bm_lock\n"); 132 dev_err(DEV, "FIXME bitmap already locked in bm_lock\n");
@@ -147,7 +148,7 @@ void drbd_bm_unlock(struct drbd_conf *mdev)
147 148
148 b->bm_why = NULL; 149 b->bm_why = NULL;
149 b->bm_task = NULL; 150 b->bm_task = NULL;
150 up(&b->bm_change); 151 mutex_unlock(&b->bm_change);
151} 152}
152 153
153/* word offset to long pointer */ 154/* word offset to long pointer */
@@ -295,7 +296,7 @@ int drbd_bm_init(struct drbd_conf *mdev)
295 if (!b) 296 if (!b)
296 return -ENOMEM; 297 return -ENOMEM;
297 spin_lock_init(&b->bm_lock); 298 spin_lock_init(&b->bm_lock);
298 init_MUTEX(&b->bm_change); 299 mutex_init(&b->bm_change);
299 init_waitqueue_head(&b->bm_io_wait); 300 init_waitqueue_head(&b->bm_io_wait);
300 301
301 mdev->bitmap = b; 302 mdev->bitmap = b;