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authorJan Kara <jack@suse.cz>2017-09-07 02:21:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-07 03:27:26 +0300
commitd72dc8a25afc71ce90ee92bdd77550e9beb85d4d (patch)
treeda47df20fe7bd2672f8368a2545f82e17703820b /fs/buffer.c
parent26b433d0da062d6e19d75350c0171d3cf8ff560d (diff)
downloadlinux-d72dc8a25afc71ce90ee92bdd77550e9beb85d4d.tar.xz
mm: make pagevec_lookup() update index
Make pagevec_lookup() (and underlying find_get_pages()) update index to the next page where iteration should continue. Most callers want this and also pagevec_lookup_tag() already does this. Link: http://lkml.kernel.org/r/20170726114704.7626-3-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 5715dac7821f..5b20893708e2 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1633,13 +1633,12 @@ void clean_bdev_aliases(struct block_device *bdev, sector_t block, sector_t len)
end = (block + len - 1) >> (PAGE_SHIFT - bd_inode->i_blkbits);
pagevec_init(&pvec, 0);
- while (index <= end && pagevec_lookup(&pvec, bd_mapping, index,
+ while (index <= end && pagevec_lookup(&pvec, bd_mapping, &index,
min(end - index, (pgoff_t)PAGEVEC_SIZE - 1) + 1)) {
for (i = 0; i < pagevec_count(&pvec); i++) {
struct page *page = pvec.pages[i];
- index = page->index;
- if (index > end)
+ if (page->index > end)
break;
if (!page_has_buffers(page))
continue;
@@ -1670,7 +1669,6 @@ unlock_page:
}
pagevec_release(&pvec);
cond_resched();
- index++;
}
}
EXPORT_SYMBOL(clean_bdev_aliases);
@@ -3552,7 +3550,8 @@ page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length,
unsigned want, nr_pages, i;
want = min_t(unsigned, end - index, PAGEVEC_SIZE);
- nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index, want);
+ nr_pages = pagevec_lookup(&pvec, inode->i_mapping, &index,
+ want);
if (nr_pages == 0)
break;
@@ -3594,7 +3593,6 @@ page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length,
if (nr_pages < want)
break;
- index = pvec.pages[i - 1]->index + 1;
pagevec_release(&pvec);
} while (index < end);