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btrfs: use pagevec_lookup_range_tag()

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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.

Link: http://lkml.kernel.org/r/20171009151359.31984-3-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara 2017-11-15 17:34:37 -08:00 committed by Linus Torvalds
parent 72b045aecd
commit 4006f437f9
1 changed files with 4 additions and 15 deletions
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19
fs/btrfs/extent_io.c
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@ -3814,8 +3814,8 @@ 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;
@ -3825,11 +3825,6 @@ 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);
@ -3961,8 +3956,8 @@ 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;
@ -3987,12 +3982,6 @@ 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);