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Commit 8faab642 authored by Jan Kara's avatar Jan Kara Committed by Linus Torvalds
Browse files

f2fs: use find_get_pages_tag() for looking up single page 

__get_first_dirty_index() wants to lookup only the first dirty page
after given index.  There's no point in using pagevec_lookup_tag() for
that.  Just use find_get_pages_tag() directly.

Link: http://lkml.kernel.org/r/20171009151359.31984-8-jack@suse.cz


Signed-off-by: default avatarJan Kara <jack@suse.cz>
Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Reviewed-by: default avatarDaniel Jordan <daniel.m.jordan@oracle.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 028a63a6

fs/f2fs/file.c

+7 −6
Original line number Diff line number Diff line
@@ -313,18 +313,19 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) 
static pgoff_t __get_first_dirty_index(struct address_space *mapping,

						pgoff_t pgofs, int whence)

{

	struct pagevec pvec;

	struct page *page;

	int nr_pages;



	if (whence != SEEK_DATA)

		return 0;



	/* find first dirty page index */

	pagevec_init(&pvec, 0);

	nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,

					PAGECACHE_TAG_DIRTY, 1);

	pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX;

	pagevec_release(&pvec);

	nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,

				      1, &page);

	if (!nr_pages)

		return ULONG_MAX;

	pgofs = page->index;

	put_page(page);

	return pgofs;

}