We want only pages from given range in ext4_writepages(). Use
pagevec_lookup_range_tag() instead of pagevec_lookup_tag() and remove
unnecessary code.
CC: "Theodore Ts'o" <ty...@mit.edu>
CC: linux-e...@vger.kernel.org
Signed-off-by: Jan Kara <j...@suse.cz>
---
fs/ext4/inode.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ace4bb9073d8..050fba2d12c2 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2555,8 +2555,8 @@ static int mpage_prepare_extent_to_map(struct
mpage_da_data *mpd)
mpd->map.m_len = 0;
mpd->next_page = index;
while (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);
if (nr_pages == 0)
goto out;
@@ -2564,16 +2564,6 @@ static int mpage_prepare_extent_to_map(struct
mpage_da_data *mpd)
struct page *page = pvec.pages[i];
/*
- * At this point, the page may be truncated or
- * invalidated (changing page->mapping to NULL), or
- * even swizzled back from swapper_space to tmpfs file
- * mapping. However, page->index will not change
- * because we have a reference on the page.
- */
- if (page->index > end)
- goto out;
-
- /*
* Accumulated enough dirty pages? This doesn't apply
* to WB_SYNC_ALL mode. For integrity sync we have to
* keep going because someone may be concurrently
--
2.12.3
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