The branch main has been updated by dumbbell (ports committer):
URL:
https://cgit.FreeBSD.org/src/commit/?id=83636727291714c235726da987a02c5b1d51bb54
commit 83636727291714c235726da987a02c5b1d51bb54
Author: Jean-Sébastien Pédron <dumbb...@freebsd.org>
AuthorDate: 2023-02-13 20:49:28 +0000
Commit: Jean-Sébastien Pédron <dumbb...@freebsd.org>
CommitDate: 2023-02-14 22:01:06 +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
---
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
