diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2012-05-18 18:13:27 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-05-18 18:13:27 +0900 |
| commit | c1dbccc3c7cc70e8211a7ad6ba55ecbc18e77a5a (patch) | |
| tree | 570fbd1ab42d12257a820460fae0e6e7bc891900 /drivers/md/dm-thin.c | |
| parent | 00d6025e58c6e3b229e28cab721c568af5b1ae05 (diff) | |
| parent | 58796ce67a80e8725220af83c5a550bf6a4dab12 (diff) | |
Merge branch 'sh/evt2irq-migration' into sh-latest
Conflicts:
arch/sh/kernel/cpu/sh3/setup-sh770x.c
arch/sh/kernel/cpu/sh3/setup-sh7710.c
arch/sh/kernel/cpu/sh3/setup-sh7720.c
arch/sh/kernel/cpu/sh4/setup-sh7750.c
arch/sh/kernel/cpu/sh4a/setup-sh7343.c
arch/sh/kernel/cpu/sh4a/setup-sh7366.c
arch/sh/kernel/cpu/sh4a/setup-sh7722.c
arch/sh/kernel/cpu/sh4a/setup-sh7723.c
arch/sh/kernel/cpu/sh4a/setup-sh7724.c
arch/sh/kernel/cpu/sh4a/setup-sh7757.c
arch/sh/kernel/cpu/sh4a/setup-sh7763.c
arch/sh/kernel/cpu/sh4a/setup-sh7770.c
arch/sh/kernel/cpu/sh4a/setup-sh7785.c
arch/sh/kernel/cpu/sh4a/setup-sh7786.c
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/md/dm-thin.c')
| -rw-r--r-- | drivers/md/dm-thin.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 213ae32a0fc..2fd87b544a9 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -279,8 +279,10 @@ static void __cell_release(struct cell *cell, struct bio_list *inmates) hlist_del(&cell->list); - bio_list_add(inmates, cell->holder); - bio_list_merge(inmates, &cell->bios); + if (inmates) { + bio_list_add(inmates, cell->holder); + bio_list_merge(inmates, &cell->bios); + } mempool_free(cell, prison->cell_pool); } @@ -303,9 +305,10 @@ static void cell_release(struct cell *cell, struct bio_list *bios) */ static void __cell_release_singleton(struct cell *cell, struct bio *bio) { - hlist_del(&cell->list); BUG_ON(cell->holder != bio); BUG_ON(!bio_list_empty(&cell->bios)); + + __cell_release(cell, NULL); } static void cell_release_singleton(struct cell *cell, struct bio *bio) @@ -1177,6 +1180,7 @@ static void no_space(struct cell *cell) static void process_discard(struct thin_c *tc, struct bio *bio) { int r; + unsigned long flags; struct pool *pool = tc->pool; struct cell *cell, *cell2; struct cell_key key, key2; @@ -1218,7 +1222,9 @@ static void process_discard(struct thin_c *tc, struct bio *bio) m->bio = bio; if (!ds_add_work(&pool->all_io_ds, &m->list)) { + spin_lock_irqsave(&pool->lock, flags); list_add(&m->list, &pool->prepared_discards); + spin_unlock_irqrestore(&pool->lock, flags); wake_worker(pool); } } else { @@ -2626,8 +2632,10 @@ static int thin_endio(struct dm_target *ti, if (h->all_io_entry) { INIT_LIST_HEAD(&work); ds_dec(h->all_io_entry, &work); + spin_lock_irqsave(&pool->lock, flags); list_for_each_entry_safe(m, tmp, &work, list) list_add(&m->list, &pool->prepared_discards); + spin_unlock_irqrestore(&pool->lock, flags); } mempool_free(h, pool->endio_hook_pool); @@ -2759,6 +2767,6 @@ static void dm_thin_exit(void) module_init(dm_thin_init); module_exit(dm_thin_exit); -MODULE_DESCRIPTION(DM_NAME "device-mapper thin provisioning target"); +MODULE_DESCRIPTION(DM_NAME " thin provisioning target"); MODULE_AUTHOR("Joe Thornber <dm-devel@redhat.com>"); MODULE_LICENSE("GPL"); |