[PATCH v4 03/39] mm: Add guard for mmap_read_lock
From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: 2025-01-22 02:31:54
Also in:
linux-perf-users, linux-toolchains, lkml
Subsystem:
memory mapping - locking, the rest · Maintainers:
Andrew Morton, Suren Baghdasaryan, Liam R. Howlett, Lorenzo Stoakes, Linus Torvalds
This is the new way of doing things. Converting all existing mmap_read_lock users is an exercise left for the reader ;-) Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> --- include/linux/mmap_lock.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h
index de9dc20b01ba..c971c4617060 100644
--- a/include/linux/mmap_lock.h
+++ b/include/linux/mmap_lock.h@@ -182,4 +182,6 @@ static inline int mmap_lock_is_contended(struct mm_struct *mm) return rwsem_is_contended(&mm->mmap_lock); } +DEFINE_GUARD(mmap_read_lock, struct mm_struct *, mmap_read_lock(_T), mmap_read_unlock(_T)) + #endif /* _LINUX_MMAP_LOCK_H */
--
2.48.1