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-rw-r--r--mm/filemap.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index b573607b7112..c11418dd94e8 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1954,7 +1954,9 @@ generic_file_buffered_write(struct kiocb *iocb, const struct iovec *iov,
if (unlikely(nr_segs > 1)) {
filemap_set_next_iovec(&cur_iov,
&iov_base, status);
- buf = cur_iov->iov_base + iov_base;
+ if (count)
+ buf = cur_iov->iov_base +
+ iov_base;
} else {
iov_base += status;
}