LU-17243 build: compatibility updates for kernel 6.6

[fs/lustre-release.git] / libcfs / include / libcfs / linux / linux-mem.h

diff --git a/libcfs/include/libcfs/linux/linux-mem.h b/libcfs/include/libcfs/linux/linux-mem.h
index 3847cae..55011f2 100644 (file)
--- a/libcfs/include/libcfs/linux/linux-mem.h
+++ b/libcfs/include/libcfs/linux/linux-mem.h
@@ -128,6 +128,14 @@ static inline void mmap_read_unlock(struct mm_struct *mm)
 {
        up_read(&mm->mmap_sem);
 }
+#else
+ #ifndef HAVE_MMAP_WRITE_TRYLOCK
+/* Replacement for mmap_write_trylock() */
+static inline bool mmap_write_trylock(struct mm_struct *mm)
+{
+       return down_write_trylock(&mm->mmap_lock) != 0;
+}
+ #endif /* HAVE_MMAP_WRITE_TRYLOCK */
 #endif
 
 #ifdef HAVE_VMALLOC_2ARGS