diff options
| author | Matthias Kaehlcke <matthias@kaehlcke.net> | 2008-07-25 10:48:38 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 19:53:45 +0200 |
| commit | 24879a8e3e68f146d4d85528cc0b5dea712b77c5 (patch) | |
| tree | 9e8021f713225c2ec5642770351aeeb59af39fb5 /drivers/block/aoe | |
| parent | pidns: remove find_task_by_pid, unused for a long time (diff) | |
| download | linux-24879a8e3e68f146d4d85528cc0b5dea712b77c5.tar.xz linux-24879a8e3e68f146d4d85528cc0b5dea712b77c5.zip | |
aoe: convert emsgs_sema into a completion
ATA over Ethernet: The semaphore emsgs_sema is used for signalling an
event, convert it in a completion.
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/aoe')
| -rw-r--r-- | drivers/block/aoe/aoechr.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index c04440cd6a32..181ebb85f0be 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -6,6 +6,7 @@ #include <linux/hdreg.h> #include <linux/blkdev.h> +#include <linux/completion.h> #include <linux/delay.h> #include <linux/smp_lock.h> #include "aoe.h" @@ -36,7 +37,7 @@ struct ErrMsg { static struct ErrMsg emsgs[NMSG]; static int emsgs_head_idx, emsgs_tail_idx; -static struct semaphore emsgs_sema; +static struct completion emsgs_comp; static spinlock_t emsgs_lock; static int nblocked_emsgs_readers; static struct class *aoe_class; @@ -141,7 +142,7 @@ bail: spin_unlock_irqrestore(&emsgs_lock, flags); spin_unlock_irqrestore(&emsgs_lock, flags); if (nblocked_emsgs_readers) - up(&emsgs_sema); + complete(&emsgs_comp); } static ssize_t @@ -221,7 +222,7 @@ aoechr_read(struct file *filp, char __user *buf, size_t cnt, loff_t *off) spin_unlock_irqrestore(&emsgs_lock, flags); - n = down_interruptible(&emsgs_sema); + n = wait_for_completion_interruptible(&emsgs_comp); spin_lock_irqsave(&emsgs_lock, flags); @@ -269,7 +270,7 @@ aoechr_init(void) printk(KERN_ERR "aoe: can't register char device\n"); return n; } - sema_init(&emsgs_sema, 0); + init_completion(&emsgs_comp); spin_lock_init(&emsgs_lock); aoe_class = class_create(THIS_MODULE, "aoe"); if (IS_ERR(aoe_class)) { |