forked from mirrors/nixpkgs
35 lines
1.3 KiB
Diff
35 lines
1.3 KiB
Diff
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From e3020723dc43af2bc22af0d68571a61daf9b44d0 Mon Sep 17 00:00:00 2001
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From: Turbo Fredriksson <turbo@bayour.com>
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Date: Sun, 14 Sep 2014 15:47:22 +0000
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Subject: [PATCH] Linux 3.16 compat: smp_mb__after_clear_bit()
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The smp_mb__{before,after}_clear_bit functions have been renamed
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smp_mb__{before,after}_atomic. Rather than adding a compatibility
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function to handle this the code has been updated to use smp_wmb().
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This has the advantage of being a stable functionally equivalent
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interface. On many architectures smp_mb__after_clear_bit() expands
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to smp_wmb(). Others might be able to do something slightly more
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efficient but this will be safe and correct on all of them.
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Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
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Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
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Closes #386
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---
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module/spl/spl-kmem.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/module/spl/spl-kmem.c b/module/spl/spl-kmem.c
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index 6de513e..79954eb 100644
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--- a/module/spl/spl-kmem.c
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+++ b/module/spl/spl-kmem.c
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@@ -2365,7 +2365,7 @@ spl_kmem_cache_reap_now(spl_kmem_cache_t *skc, int count)
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spl_slab_reclaim(skc, count, 1);
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clear_bit(KMC_BIT_REAPING, &skc->skc_flags);
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- smp_mb__after_clear_bit();
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+ smp_wmb();
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wake_up_bit(&skc->skc_flags, KMC_BIT_REAPING);
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out:
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atomic_dec(&skc->skc_ref);
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