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-rw-r--r--include/linux/fs.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index bb29b02d9bb6..bd0a1b2f3c02 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -467,6 +467,16 @@ struct block_device {
int mapping_tagged(struct address_space *mapping, int tag);
+static inline void i_mmap_lock_write(struct address_space *mapping)
+{
+ mutex_lock(&mapping->i_mmap_mutex);
+}
+
+static inline void i_mmap_unlock_write(struct address_space *mapping)
+{
+ mutex_unlock(&mapping->i_mmap_mutex);
+}
+
/*
* Might pages of this file be mapped into userspace?
*/