git: 01b3fc89ddd8 - stable/13 - linuxkpi: Add `synchronize_shrinkers()`
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Date: Thu, 16 Feb 2023 11:56:35 UTC
The branch stable/13 has been updated by dumbbell (ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=01b3fc89ddd8e48c6dfe584d44b6018edc4f3a5f commit 01b3fc89ddd8e48c6dfe584d44b6018edc4f3a5f Author: Jean-Sébastien Pédron <dumbbell@FreeBSD.org> AuthorDate: 2023-02-13 20:49:28 +0000 Commit: Jean-Sébastien Pédron <dumbbell@FreeBSD.org> CommitDate: 2023-02-16 11:55:20 +0000 linuxkpi: Add `synchronize_shrinkers()` 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 (cherry picked from commit 83636727291714c235726da987a02c5b1d51bb54) --- sys/compat/linuxkpi/common/include/linux/shrinker.h | 2 ++ sys/compat/linuxkpi/common/src/linux_shrinker.c | 8 ++++++++ 2 files changed, 10 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/shrinker.h b/sys/compat/linuxkpi/common/include/linux/shrinker.h index 39ea35f0a862..04e96a12c4bd 100644 --- a/sys/compat/linuxkpi/common/include/linux/shrinker.h +++ b/sys/compat/linuxkpi/common/include/linux/shrinker.h @@ -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_ */ diff --git a/sys/compat/linuxkpi/common/src/linux_shrinker.c b/sys/compat/linuxkpi/common/src/linux_shrinker.c index b48e491a4e2f..227ef3261cb3 100644 --- a/sys/compat/linuxkpi/common/src/linux_shrinker.c +++ b/sys/compat/linuxkpi/common/src/linux_shrinker.c @@ -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