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| author | Jan Kara <jack@suse.cz> | 2017-11-15 17:35:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 18:21:04 -0800 |
| commit | 312e9d2f7053f480627dcaf5e14f9cae78e3715a (patch) | |
| tree | 101a846fb11ae8d22a78b6a8f9de2bbf137a268c | |
| parent | 40f9c51326efd362dbae6c0e07f0c0ada42a5e00 (diff) | |
| download | linux-312e9d2f7053f480627dcaf5e14f9cae78e3715a.tar.gz linux-312e9d2f7053f480627dcaf5e14f9cae78e3715a.tar.bz2 linux-312e9d2f7053f480627dcaf5e14f9cae78e3715a.zip | |
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>
| -rw-r--r-- | mm/filemap.c | 14 |
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); } |