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LinuxKPI: allocate current before taking shrinkers lock

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This fixes following warnings when shrinkers are invoked first time:

uma_zalloc_debug: zone "lkpicurr" with the following non-sleepable
locks held: exclusive sleep mutex lkpi-shrinker (lkpi-shrinker)

uma_zalloc_debug: zone "lkpimm" with the following non-sleepable locks
held: exclusive sleep mutex lkpi-shrinker (lkpi-shrinker)

Reviewed by:	hselasky, manu
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D32066
This commit is contained in:
Vladimir Kondratyev 2021-09-29 23:12:58 +03:00
parent b58c916f11
commit 2fe9ea5d3a
1 changed files with 2 additions and 0 deletions
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2
sys/compat/linuxkpi/common/src/linux_shrinker.c
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@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$");
#include <sys/eventhandler.h>
#include <sys/mutex.h>
#include <linux/compat.h>
#include <linux/shrinker.h>
TAILQ_HEAD(, shrinker) lkpi_shrinkers = TAILQ_HEAD_INITIALIZER(lkpi_shrinkers);
@ -93,6 +94,7 @@ linuxkpi_vm_lowmem(void *arg __unused)
{
struct shrinker *s;
linux_set_current(curthread);
mtx_lock(&mtx_shrinker);
TAILQ_FOREACH(s, &lkpi_shrinkers, next) {
shrinker_shrink(s);