linux-kernel - [PATCH] fuse: release temporary page if fuse_writepage

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Message-ID: <20140710113233.26689.98237.stgit@localhost.localdomain>
Date:	Thu, 10 Jul 2014 15:32:43 +0400
From:	Maxim Patlasov <MPatlasov@...allels.com>
To:	miklos@...redi.hu
Cc:	fuse-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH] fuse: release temporary page if fuse_writepage_locked()
 failed

tmp_page to be freed if fuse_write_file_get() returns NULL.

Signed-off-by: Maxim Patlasov <mpatlasov@...allels.com>
---
 fs/fuse/file.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 3a47aa2..a18baa4 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1679,7 +1679,7 @@ static int fuse_writepage_locked(struct page *page)
 	error = -EIO;
 	req->ff = fuse_write_file_get(fc, fi);
 	if (!req->ff)
-		goto err_free;
+		goto err_nofile;
 
 	fuse_write_fill(req, req->ff, page_offset(page), 0);
 
@@ -1707,6 +1707,8 @@ static int fuse_writepage_locked(struct page *page)
 
 	return 0;
 
+err_nofile:
+	__free_page(tmp_page);
 err_free:
 	fuse_request_free(req);
 err:

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