From: Jan Kara <jack@suse.cz>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: <linux-mm@kvack.org>, <linux-fsdevel@vger.kernel.org>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
Jan Kara <jack@suse.cz>
Subject: [PATCH 10/16] mm: Use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
Date: Mon, 9 Oct 2017 17:13:53 +0200 [thread overview]
Message-ID: <20171009151359.31984-11-jack@suse.cz> (raw)
In-Reply-To: <20171009151359.31984-1-jack@suse.cz>
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.
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
---
mm/filemap.c | 14 ++++++--------
1 file 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);
}
--
2.12.3
--
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next prev parent reply other threads:[~2017-10-09 15:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-09 15:13 [PATCH 0/16 v3] Ranged pagevec tagged lookup Jan Kara
2017-10-09 15:13 ` [PATCH 01/16] mm: Implement find_get_pages_range_tag() Jan Kara
2017-10-09 15:13 ` [PATCH 02/16] btrfs: Use pagevec_lookup_range_tag() Jan Kara
2017-10-09 15:13 ` [PATCH 03/16] ceph: " Jan Kara
2017-10-09 15:13 ` [PATCH 04/16] ext4: " Jan Kara
2017-10-09 15:13 ` [PATCH 05/16] f2fs: " Jan Kara
2017-10-09 15:13 ` [PATCH 06/16] f2fs: Simplify page iteration loops Jan Kara
2017-10-09 15:13 ` [PATCH 07/16] f2fs: Use find_get_pages_tag() for looking up single page Jan Kara
2017-10-09 15:13 ` [PATCH 08/16] gfs2: Use pagevec_lookup_range_tag() Jan Kara
2017-10-09 15:13 ` [PATCH 09/16] nilfs2: " Jan Kara
2017-10-09 15:13 ` Jan Kara [this message]
2017-10-09 15:13 ` [PATCH 11/16] mm: Use pagevec_lookup_range_tag() in write_cache_pages() Jan Kara
2017-10-09 15:13 ` [PATCH 12/16] mm: Add variant of pagevec_lookup_range_tag() taking number of pages Jan Kara
2017-10-09 15:13 ` [PATCH 13/16] ceph: Use pagevec_lookup_range_nr_tag() Jan Kara
2017-10-09 15:13 ` [PATCH 14/16] mm: Remove nr_pages argument from pagevec_lookup_{,range}_tag() Jan Kara
2017-10-09 15:13 ` [PATCH 15/16] afs: Use find_get_pages_range_tag() Jan Kara
2017-10-09 15:13 ` [PATCH 16/16] cifs: " Jan Kara
2017-10-10 17:48 ` Daniel Jordan
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