The patch titled
Subject: ceph: use pagevec_lookup_range_tag()
has been added to the -mm tree. Its filename is
ceph-use-pagevec_lookup_range_tag.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ceph-use-pagevec_lookup_range_tag.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ceph-use-pagevec_lookup_range_tag.patch
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------------------------------------------------------
From: Jan Kara <jack@xxxxxxx>
Subject: ceph: use pagevec_lookup_range_tag()
We want only pages from given range in ceph_writepages_start(). Use
pagevec_lookup_range_tag() instead of pagevec_lookup_tag() and remove
unnecessary code.
Link: http://lkml.kernel.org/r/20171009151359.31984-4-jack@xxxxxxx
Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
Reviewed-by: "Yan, Zheng" <zyan@xxxxxxxxxx>
Cc: Ilya Dryomov <idryomov@xxxxxxxxx>
Cc: "Yan, Zheng" <zyan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ceph/addr.c | 19 +++----------------
1 file changed, 3 insertions(+), 16 deletions(-)
diff -puN fs/ceph/addr.c~ceph-use-pagevec_lookup_range_tag fs/ceph/addr.c
--- a/fs/ceph/addr.c~ceph-use-pagevec_lookup_range_tag
+++ a/fs/ceph/addr.c
@@ -871,13 +871,10 @@ retry:
get_more_pages:
pvec_pages = min_t(unsigned, PAGEVEC_SIZE,
max_pages - locked_pages);
- if (end - index < (u64)(pvec_pages - 1))
- pvec_pages = (unsigned)(end - index) + 1;
-
- pvec_pages = pagevec_lookup_tag(&pvec, mapping, &index,
- PAGECACHE_TAG_DIRTY,
+ pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
+ end, PAGECACHE_TAG_DIRTY,
pvec_pages);
- dout("pagevec_lookup_tag got %d\n", pvec_pages);
+ dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
if (!pvec_pages && !locked_pages)
break;
for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
@@ -895,16 +892,6 @@ get_more_pages:
unlock_page(page);
continue;
}
- if (page->index > end) {
- dout("end of range %p\n", page);
- /* can't be range_cyclic (1st pass) because
- * end == -1 in that case. */
- stop = true;
- if (ceph_wbc.head_snapc)
- done = true;
- unlock_page(page);
- break;
- }
if (strip_unit_end && (page->index > strip_unit_end)) {
dout("end of strip unit %p\n", page);
unlock_page(page);
_
Patches currently in -mm which might be from jack@xxxxxxx are
mm-readahead-increase-maximum-readahead-window.patch
mm-implement-find_get_pages_range_tag.patch
btrfs-use-pagevec_lookup_range_tag.patch
ceph-use-pagevec_lookup_range_tag.patch
ext4-use-pagevec_lookup_range_tag.patch
f2fs-use-pagevec_lookup_range_tag.patch
f2fs-simplify-page-iteration-loops.patch
f2fs-use-find_get_pages_tag-for-looking-up-single-page.patch
gfs2-use-pagevec_lookup_range_tag.patch
nilfs2-use-pagevec_lookup_range_tag.patch
mm-use-pagevec_lookup_range_tag-in-__filemap_fdatawait_range.patch
mm-use-pagevec_lookup_range_tag-in-write_cache_pages.patch
mm-add-variant-of-pagevec_lookup_range_tag-taking-number-of-pages.patch
ceph-use-pagevec_lookup_range_nr_tag.patch
mm-remove-nr_pages-argument-from-pagevec_lookup_range_tag.patch
afs-use-find_get_pages_range_tag.patch
cifs-use-find_get_pages_range_tag.patch
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