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| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-11 13:16:10 +0100 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2006-01-12 11:53:11 -0600 |
| commit | 0b9506723826c68b50fa33e345700ddcac1bed36 (patch) | |
| tree | da3e432ef4517c47ebdc088c6322d0ac51193127 /drivers/scsi/scsi.c | |
| parent | dacee84b070c4e705a5b6446f1f0a6a6e2f8d7a4 (diff) | |
| download | op-kernel-dev-0b9506723826c68b50fa33e345700ddcac1bed36.zip op-kernel-dev-0b9506723826c68b50fa33e345700ddcac1bed36.tar.gz | |
[SCSI] turn most scsi semaphores into mutexes
the scsi layer is using semaphores in a mutex way, this patch converts
these into using mutexes instead
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi.c')
| -rw-r--r-- | drivers/scsi/scsi.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index ee5f4df..245ca99 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -55,6 +55,7 @@ #include <linux/interrupt.h> #include <linux/notifier.h> #include <linux/cpu.h> +#include <linux/mutex.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -209,7 +210,7 @@ static struct scsi_host_cmd_pool scsi_cmd_dma_pool = { .gfp_mask = __GFP_DMA, }; -static DECLARE_MUTEX(host_cmd_pool_mutex); +static DEFINE_MUTEX(host_cmd_pool_mutex); static struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask) @@ -330,7 +331,7 @@ int scsi_setup_command_freelist(struct Scsi_Host *shost) * Select a command slab for this host and create it if not * yet existant. */ - down(&host_cmd_pool_mutex); + mutex_lock(&host_cmd_pool_mutex); pool = (shost->unchecked_isa_dma ? &scsi_cmd_dma_pool : &scsi_cmd_pool); if (!pool->users) { pool->slab = kmem_cache_create(pool->name, @@ -342,7 +343,7 @@ int scsi_setup_command_freelist(struct Scsi_Host *shost) pool->users++; shost->cmd_pool = pool; - up(&host_cmd_pool_mutex); + mutex_unlock(&host_cmd_pool_mutex); /* * Get one backup command for this host. @@ -359,7 +360,7 @@ int scsi_setup_command_freelist(struct Scsi_Host *shost) kmem_cache_destroy(pool->slab); return -ENOMEM; fail: - up(&host_cmd_pool_mutex); + mutex_unlock(&host_cmd_pool_mutex); return -ENOMEM; } @@ -381,10 +382,10 @@ void scsi_destroy_command_freelist(struct Scsi_Host *shost) kmem_cache_free(shost->cmd_pool->slab, cmd); } - down(&host_cmd_pool_mutex); + mutex_lock(&host_cmd_pool_mutex); if (!--shost->cmd_pool->users) kmem_cache_destroy(shost->cmd_pool->slab); - up(&host_cmd_pool_mutex); + mutex_unlock(&host_cmd_pool_mutex); } #ifdef CONFIG_SCSI_LOGGING |
