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lineage_android_kernel_xiaomi_sdm845
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[PATCH] alloc_buffer_head() and free_buffer_head() cleanup 

Signed-off-by: Coywolf Qi Hunt <qiyong@fc-cn.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Coywolf Qi Hunt 2005-09-06 15:18:17 -07:00 committed by Linus Torvalds
parent 3f4bb1f419
commit 736c7b808f
1 changed files with 4 additions and 6 deletions
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10
fs/buffer.c
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@ -3046,10 +3046,9 @@ struct buffer_head *alloc_buffer_head(unsigned int __nocast gfp_flags)
{ {
struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags); struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags);
if (ret) { if (ret) {
preempt_disable(); get_cpu_var(bh_accounting).nr++;
__get_cpu_var(bh_accounting).nr++;
recalc_bh_state(); recalc_bh_state();
preempt_enable(); put_cpu_var(bh_accounting);
} }
return ret; return ret;
} }
@ -3059,10 +3058,9 @@ void free_buffer_head(struct buffer_head *bh)
{ {
BUG_ON(!list_empty(&bh->b_assoc_buffers)); BUG_ON(!list_empty(&bh->b_assoc_buffers));
kmem_cache_free(bh_cachep, bh); kmem_cache_free(bh_cachep, bh);
preempt_disable(); get_cpu_var(bh_accounting).nr--;
__get_cpu_var(bh_accounting).nr--;
recalc_bh_state(); recalc_bh_state();
preempt_enable(); put_cpu_var(bh_accounting);
} }
EXPORT_SYMBOL(free_buffer_head); EXPORT_SYMBOL(free_buffer_head);