diff options
Diffstat (limited to 'lib/iov_iter.c')
| -rw-r--r-- | lib/iov_iter.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 1abb32c0da50..cc4b5541eef8 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1021,15 +1021,18 @@ static ssize_t iter_folioq_get_pages(struct iov_iter *iter, size_t offset = iov_offset, fsize = folioq_folio_size(folioq, slot); size_t part = PAGE_SIZE - offset % PAGE_SIZE; - part = umin(part, umin(maxsize - extracted, fsize - offset)); - count -= part; - iov_offset += part; - extracted += part; - - *pages = folio_page(folio, offset / PAGE_SIZE); - get_page(*pages); - pages++; - maxpages--; + if (offset < fsize) { + part = umin(part, umin(maxsize - extracted, fsize - offset)); + count -= part; + iov_offset += part; + extracted += part; + + *pages = folio_page(folio, offset / PAGE_SIZE); + get_page(*pages); + pages++; + maxpages--; + } + if (maxpages == 0 || extracted >= maxsize) break; |