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linuxkpi: Add synchronize_shrinkers()

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It takes the lock and release it immediately to make sure no shrinkers
are running in parallel.

Reviewed by:	manu
Approved by:	manu
Differential Revision:	https://reviews.freebsd.org/D38565
This commit is contained in:
Jean-Sébastien Pédron 2023-02-13 21:49:28 +01:00
parent 53da54b936
commit 8363672729
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2 changed files with 10 additions and 0 deletions
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2
sys/compat/linuxkpi/common/include/linux/shrinker.h
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@ -51,8 +51,10 @@ struct shrinker {
int linuxkpi_register_shrinker(struct shrinker *s);
void linuxkpi_unregister_shrinker(struct shrinker *s);
void linuxkpi_synchronize_shrinkers(void);
#define register_shrinker(s) linuxkpi_register_shrinker(s)
#define unregister_shrinker(s) linuxkpi_unregister_shrinker(s)
#define synchronize_shrinkers() linuxkpi_synchronize_shrinkers()
#endif /* _LINUXKPI_LINUX_SHRINKER_H_ */

8
sys/compat/linuxkpi/common/src/linux_shrinker.c
View File

@ -64,6 +64,14 @@ linuxkpi_unregister_shrinker(struct shrinker *s)
sx_xunlock(&sx_shrinker);
}
void
linuxkpi_synchronize_shrinkers(void)
{
sx_xlock(&sx_shrinker);
sx_xunlock(&sx_shrinker);
}
#define SHRINKER_BATCH 512
static void