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-rw-r--r--lib/iov_iter.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index e14749711e34..7d3158d1f8ea 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1368,9 +1368,6 @@ static ssize_t iter_xarray_get_pages(struct iov_iter *i,
size_t size = maxsize;
loff_t pos;
- if (!size || !maxpages)
- return 0;
-
pos = i->xarray_start + i->iov_offset;
index = pos >> PAGE_SHIFT;
offset = pos & ~PAGE_MASK;
@@ -1440,10 +1437,11 @@ ssize_t iov_iter_get_pages(struct iov_iter *i,
if (maxsize > i->count)
maxsize = i->count;
- if (!maxsize)
+ if (!maxsize || !maxpages)
return 0;
if (maxsize > MAX_RW_COUNT)
maxsize = MAX_RW_COUNT;
+ BUG_ON(!pages);
if (likely(user_backed_iter(i))) {
unsigned int gup_flags = 0;
@@ -1522,9 +1520,6 @@ static ssize_t iter_xarray_get_pages_alloc(struct iov_iter *i,
size_t size = maxsize;
loff_t pos;
- if (!size)
- return 0;
-
pos = i->xarray_start + i->iov_offset;
index = pos >> PAGE_SHIFT;
offset = pos & ~PAGE_MASK;