From: Christoph Hellwig <hch@xxxxxx>
[ Upstream commit 49694d14ff68fa4b5f86019dbcfb44a8bd213e58 ]
The length variable is rather pointless given that it can be trivially
deduced from offset and size. Also the initial calculation can lead
to KASAN warnings.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reported-by: Leizhen (ThunderTown) <thunder.leizhen@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/iomap/seek.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/fs/iomap/seek.c b/fs/iomap/seek.c
index 50b8f1418f26..ce6fb810854f 100644
--- a/fs/iomap/seek.c
+++ b/fs/iomap/seek.c
@@ -35,23 +35,20 @@ loff_t
iomap_seek_hole(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
{
loff_t size = i_size_read(inode);
- loff_t length = size - offset;
loff_t ret;
/* Nothing to be found before or beyond the end of the file. */
if (offset < 0 || offset >= size)
return -ENXIO;
- while (length > 0) {
- ret = iomap_apply(inode, offset, length, IOMAP_REPORT, ops,
- &offset, iomap_seek_hole_actor);
+ while (offset < size) {
+ ret = iomap_apply(inode, offset, size - offset, IOMAP_REPORT,
+ ops, &offset, iomap_seek_hole_actor);
if (ret < 0)
return ret;
if (ret == 0)
break;
-
offset += ret;
- length -= ret;
}
return offset;
--
2.30.2
