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| author | Jean-Sébastien Pédron <dumbbell@FreeBSD.org> | 2023-02-13 20:49:28 +0000 |
|---|---|---|
| committer | Jean-Sébastien Pédron <dumbbell@FreeBSD.org> | 2023-02-16 11:55:20 +0000 |
| commit | 01b3fc89ddd8e48c6dfe584d44b6018edc4f3a5f (patch) | |
| tree | 60964e81066a2bbf8a3b7895e4d4bc6fce6620e8 | |
| parent | 895d286a36cf70fa527538ca3c9a1a545f81a9cd (diff) | |
| download | src-01b3fc89ddd8e48c6dfe584d44b6018edc4f3a5f.tar.gz src-01b3fc89ddd8e48c6dfe584d44b6018edc4f3a5f.zip | |
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)
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/shrinker.h | 2 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_shrinker.c | 8 |
2 files changed, 10 insertions, 0 deletions
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 |