From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Tue, 9 Jun 2020 03:58:29 +0000 (-0700)
Subject: iomap: Fix unsharing of an extent >2GB on a 32-bit machine
X-Git-Tag: v5.10.7~2317^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d4ff3b2ef901cd451fb8a9ff4623d060a79502cd;p=platform%2Fkernel%2Flinux-rpi.git

iomap: Fix unsharing of an extent >2GB on a 32-bit machine

Widen the type used for counting the number of bytes unshared.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 89e2196..17ed7bb 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -909,7 +909,7 @@ iomap_unshare_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
 		struct iomap *iomap, struct iomap *srcmap)
 {
 	long status = 0;
-	ssize_t written = 0;
+	loff_t written = 0;
 
 	/* don't bother with blocks that are not shared to start with */
 	if (!(iomap->flags & IOMAP_F_SHARED))