The patch titled
Subject: f2fs: use find_get_pages_tag() for looking up single page
has been added to the -mm tree. Its filename is
f2fs-use-find_get_pages_tag-for-looking-up-single-page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/f2fs-use-find_get_pages_tag-for-looking-up-single-page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/f2fs-use-find_get_pages_tag-for-looking-up-single-page.patch
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From: Jan Kara <jack@xxxxxxx>
Subject: f2fs: use find_get_pages_tag() for looking up single page
__get_first_dirty_index() wants to lookup only the first dirty page after
given index. There's no point in using pagevec_lookup_tag() for that.
Just use find_get_pages_tag() directly.
Link: http://lkml.kernel.org/r/20171009151359.31984-8-jack@xxxxxxx
Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Reviewed-by: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/file.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff -puN fs/f2fs/file.c~f2fs-use-find_get_pages_tag-for-looking-up-single-page fs/f2fs/file.c
--- a/fs/f2fs/file.c~f2fs-use-find_get_pages_tag-for-looking-up-single-page
+++ a/fs/f2fs/file.c
@@ -313,18 +313,19 @@ int f2fs_sync_file(struct file *file, lo
static pgoff_t __get_first_dirty_index(struct address_space *mapping,
pgoff_t pgofs, int whence)
{
- struct pagevec pvec;
+ struct page *page;
int nr_pages;
if (whence != SEEK_DATA)
return 0;
/* find first dirty page index */
- pagevec_init(&pvec, 0);
- nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,
- PAGECACHE_TAG_DIRTY, 1);
- pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX;
- pagevec_release(&pvec);
+ nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
+ 1, &page);
+ if (!nr_pages)
+ return ULONG_MAX;
+ pgofs = page->index;
+ put_page(page);
return pgofs;
}
_
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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