From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
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>,
	linux-btrfs@vger.kernel.org,
	David Sterba <dsterba@suse.com>
Subject: [PATCH 02/16] btrfs: Use pagevec_lookup_range_tag()
Date: Mon,  9 Oct 2017 17:13:45 +0200
Message-Id: <20171009151359.31984-3-jack@suse.cz>
In-Reply-To: <20171009151359.31984-1-jack@suse.cz>
References: <20171009151359.31984-1-jack@suse.cz>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-fsdevel.vger.kernel.org>

We want only pages from given range in btree_write_cache_pages() and
extent_write_cache_pages(). Use pagevec_lookup_range_tag() instead of
pagevec_lookup_tag() and remove unnecessary code.

CC: linux-btrfs@vger.kernel.org
CC: David Sterba <dsterba@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/btrfs/extent_io.c | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 970190cd347e..a4eb6c988f27 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3818,8 +3818,8 @@ int btree_write_cache_pages(struct address_space *mapping,
 	if (wbc->sync_mode == WB_SYNC_ALL)
 		tag_pages_for_writeback(mapping, index, end);
 	while (!done && !nr_to_write_done && (index <= end) &&
-	       (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
-			min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
+	       (nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
+			tag, PAGEVEC_SIZE))) {
 		unsigned i;
 
 		scanned = 1;
@@ -3829,11 +3829,6 @@ int btree_write_cache_pages(struct address_space *mapping,
 			if (!PagePrivate(page))
 				continue;
 
-			if (!wbc->range_cyclic && page->index > end) {
-				done = 1;
-				break;
-			}
-
 			spin_lock(&mapping->private_lock);
 			if (!PagePrivate(page)) {
 				spin_unlock(&mapping->private_lock);
@@ -3965,8 +3960,8 @@ static int extent_write_cache_pages(struct address_space *mapping,
 		tag_pages_for_writeback(mapping, index, end);
 	done_index = index;
 	while (!done && !nr_to_write_done && (index <= end) &&
-	       (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
-			min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
+	       (nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
+			tag, PAGEVEC_SIZE))) {
 		unsigned i;
 
 		scanned = 1;
@@ -3991,12 +3986,6 @@ static int extent_write_cache_pages(struct address_space *mapping,
 				continue;
 			}
 
-			if (!wbc->range_cyclic && page->index > end) {
-				done = 1;
-				unlock_page(page);
-				continue;
-			}
-
 			if (wbc->sync_mode != WB_SYNC_NONE) {
 				if (PageWriteback(page))
 					flush_fn(data);
-- 
2.12.3

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