[PATCH 5.18 404/879] iomap: iomap_write_failed fix

[Greg Kroah-Hartman]

From: Andreas Gruenbacher <agruenba@xxxxxxxxxx>

[ Upstream commit b71450e2cc4b3c79f33c5bd276d152af9bd54f79 ]

The @lend parameter of truncate_pagecache_range() should be the offset
of the last byte of the hole, not the first byte beyond it.

Fixes: ae259a9c8593 ("fs: introduce iomap infrastructure")
Signed-off-by: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/iomap/buffered-io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 8ce8720093b9..358ee1fb6f0d 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -531,7 +531,8 @@ iomap_write_failed(struct inode *inode, loff_t pos, unsigned len)
 	 * write started inside the existing inode size.
 	 */
 	if (pos + len > i_size)
-		truncate_pagecache_range(inode, max(pos, i_size), pos + len);
+		truncate_pagecache_range(inode, max(pos, i_size),
+					 pos + len - 1);
 }
 
 static int iomap_read_folio_sync(loff_t block_start, struct folio *folio,
-- 
2.35.1