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authorJan Kara <jack@suse.cz>2017-11-16 04:35:05 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-16 05:21:04 +0300
commit312e9d2f7053f480627dcaf5e14f9cae78e3715a (patch)
tree101a846fb11ae8d22a78b6a8f9de2bbf137a268c /mm/filemap.c
parent40f9c51326efd362dbae6c0e07f0c0ada42a5e00 (diff)
downloadlinux-312e9d2f7053f480627dcaf5e14f9cae78e3715a.tar.xz
mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
Use pagevec_lookup_range_tag() in __filemap_fdatawait_range() as it is interested only in pages from given range. Remove unnecessary code resulting from this. Link: http://lkml.kernel.org/r/20171009151359.31984-11-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index cf74d0dacc6a..229481d258bc 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -420,19 +420,17 @@ static void __filemap_fdatawait_range(struct address_space *mapping,
return;
pagevec_init(&pvec, 0);
- while ((index <= end) &&
- (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
- PAGECACHE_TAG_WRITEBACK,
- min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1)) != 0) {
+ while (index <= end) {
unsigned i;
+ nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
+ end, PAGECACHE_TAG_WRITEBACK, PAGEVEC_SIZE);
+ if (!nr_pages)
+ break;
+
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
- /* until radix tree lookup accepts end_index */
- if (page->index > end)
- continue;
-
wait_on_page_writeback(page);
ClearPageError(page);
}