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authorBenjamin LaHaise <bcrl@kvack.org>2014-07-22 09:56:56 -0400
committerBenjamin LaHaise <bcrl@kvack.org>2014-07-22 09:56:56 -0400
commitbe6fb451a24582732c66e28cb0beb3f19c4289fd (patch)
treea7576a73fa72dffe3bdc246cb3bf42b25725feaf /fs/aio.c
parent6e830d53717cf3d5c30c1afce3773ef97e436cd9 (diff)
downloadlinux-stericsson-be6fb451a24582732c66e28cb0beb3f19c4289fd.tar.gz
aio: remove no longer needed preempt_disable()
Based on feedback from Jens Axboe on 263782c1c95bbddbb022dc092fd89a36bb8d5577, clean up get/put_reqs_available() to remove the no longer needed preempt_disable() and preempt_enable() pair. Signed-off-by: Benjamin LaHaise <bcrl@kvack.org> Cc: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/aio.c')
-rw-r--r--fs/aio.c10
1 files changed, 2 insertions, 8 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 8216aa0c7539..9ce9e8ea773f 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -814,10 +814,8 @@ static void put_reqs_available(struct kioctx *ctx, unsigned nr)
struct kioctx_cpu *kcpu;
unsigned long flags;
- preempt_disable();
- kcpu = this_cpu_ptr(ctx->cpu);
-
local_irq_save(flags);
+ kcpu = this_cpu_ptr(ctx->cpu);
kcpu->reqs_available += nr;
while (kcpu->reqs_available >= ctx->req_batch * 2) {
@@ -826,7 +824,6 @@ static void put_reqs_available(struct kioctx *ctx, unsigned nr)
}
local_irq_restore(flags);
- preempt_enable();
}
static bool get_reqs_available(struct kioctx *ctx)
@@ -835,10 +832,8 @@ static bool get_reqs_available(struct kioctx *ctx)
bool ret = false;
unsigned long flags;
- preempt_disable();
- kcpu = this_cpu_ptr(ctx->cpu);
-
local_irq_save(flags);
+ kcpu = this_cpu_ptr(ctx->cpu);
if (!kcpu->reqs_available) {
int old, avail = atomic_read(&ctx->reqs_available);
@@ -858,7 +853,6 @@ static bool get_reqs_available(struct kioctx *ctx)
kcpu->reqs_available--;
out:
local_irq_restore(flags);
- preempt_enable();
return ret;
}