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ext4: use pagevec_lookup_range() in writeback code 

Both occurences of pagevec_lookup() actually want only pages from a
given range.  Use pagevec_lookup_range() for the lookup.

Link: http://lkml.kernel.org/r/20170726114704.7626-7-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: "Theodore Ts'o" <tytso@mit.edu>
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 2017-09-06 16:21:30 -07:00 committed by Linus Torvalds
parent dec0da7b60
commit 2b85a6171d
1 changed files with 5 additions and 7 deletions
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12
fs/ext4/inode.c
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@ -1720,13 +1720,13 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
pagevec_init(&pvec, 0);
while (index <= end) {
nr_pages = pagevec_lookup(&pvec, mapping, &index, PAGEVEC_SIZE);
nr_pages = pagevec_lookup_range(&pvec, mapping, &index, end,
PAGEVEC_SIZE);
if (nr_pages == 0)
break;
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
if (page->index > end)
break;
BUG_ON(!PageLocked(page));
BUG_ON(PageWriteback(page));
if (invalidate) {
@ -2347,15 +2347,13 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd)
pagevec_init(&pvec, 0);
while (start <= end) {
nr_pages = pagevec_lookup(&pvec, inode->i_mapping, &start,
PAGEVEC_SIZE);
nr_pages = pagevec_lookup_range(&pvec, inode->i_mapping,
&start, end, PAGEVEC_SIZE);
if (nr_pages == 0)
break;
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
if (page->index > end)
break;
bh = head = page_buffers(page);
do {
if (lblk < mpd->map.m_lblk)