[RFC PATCH V2 10/12] fs/xfs: Fix truncate up

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From: Ira Weiny <ira.weiny@xxxxxxxxx>

When zeroing the end of a file we must account for bytes contained in
the final page which are past EOF.

Extend the range passed to iomap_zero_range() to reach LLONG_MAX which
will include all bytes of the final page.

Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
---
 fs/xfs/xfs_iops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index a2f2604c3187..a34b04e8ac9c 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -910,7 +910,7 @@ xfs_setattr_size(
 	 */
 	if (newsize > oldsize) {
 		trace_xfs_zero_eof(ip, oldsize, newsize - oldsize);
-		error = iomap_zero_range(inode, oldsize, newsize - oldsize,
+		error = iomap_zero_range(inode, oldsize, LLONG_MAX - oldsize,
 				&did_zeroing, &xfs_buffered_write_iomap_ops);
 	} else {
 		error = iomap_truncate_page(inode, newsize, &did_zeroing,
-- 
2.21.0




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