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bcachefs: Don't disable preemption unnecessarily

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Small improvements to some percpu utility code.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2021-06-10 23:34:02 -04:00 committed by Kent Overstreet
parent 297d89343d
commit 109a427712
2 changed files with 2 additions and 9 deletions
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6
fs/bcachefs/util.c
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@ -893,13 +893,9 @@ void eytzinger0_find_test(void)
*/
u64 *bch2_acc_percpu_u64s(u64 __percpu *p, unsigned nr)
{
u64 *ret;
u64 *ret = this_cpu_ptr(p);
int cpu;
preempt_disable();
ret = this_cpu_ptr(p);
preempt_enable();
for_each_possible_cpu(cpu) {
u64 *i = per_cpu_ptr(p, cpu);

5
fs/bcachefs/util.h
View File

@ -715,10 +715,7 @@ static inline void percpu_u64_set(u64 __percpu *dst, u64 src)
for_each_possible_cpu(cpu)
*per_cpu_ptr(dst, cpu) = 0;
preempt_disable();
*this_cpu_ptr(dst) = src;
preempt_enable();
this_cpu_write(*dst, src);
}
static inline void acc_u64s(u64 *acc, const u64 *src, unsigned nr)