[Virtio-fs] [PATCH 9/9] fuse: fix deadlock in __fuse_file_fallocate()

[Liu Bo]

From: Xiaoguang Wang <xiaoguang.wang at linux.alibaba.com>

This bug is obvious, fix it.

Reviewed-by: Joseph Qi <joseph.qi at linux.alibaba.com>
Signed-off-by: Xiaoguang Wang <xiaoguang.wang at linux.alibaba.com>
---
 fs/fuse/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 6ab23d7..0236783 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -3623,7 +3623,7 @@ static long __fuse_file_fallocate(struct file *file, int mode,
 	if (mode & FALLOC_FL_PUNCH_HOLE) {
 		down_write(&fi->i_mmap_sem);
 		truncate_pagecache_range(inode, offset, offset + length - 1);
-		down_write(&fi->i_mmap_sem);
+		up_write(&fi->i_mmap_sem);
 	}
 	fuse_invalidate_attr(inode);
 
-- 
1.8.3.1