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-rw-r--r--include/linux/fs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3d69de600494..f81c822f4d89 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -526,6 +526,11 @@ static inline void i_mmap_lock_write(struct address_space *mapping)
down_write(&mapping->i_mmap_rwsem);
}
+static inline int i_mmap_trylock_write(struct address_space *mapping)
+{
+ return down_write_trylock(&mapping->i_mmap_rwsem);
+}
+
static inline void i_mmap_unlock_write(struct address_space *mapping)
{
up_write(&mapping->i_mmap_rwsem);