The quilt patch titled
Subject: ufs: convert ufs_change_blocknr() to use folios
has been removed from the -mm tree. Its filename was
ufs-convert-ufs_change_blocknr-to-use-folios.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: ufs: convert ufs_change_blocknr() to use folios
Date: mon, 16 Oct 2023 21:11:12 +0100
Convert the locked_page argument to a folio, then use folios throughout.
Saves three hidden calls to compound_head().
Link: https://lkml.kernel.org/r/20231016201114.1928083-26-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Cc: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
Cc: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ufs/balloc.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
--- a/fs/ufs/balloc.c~ufs-convert-ufs_change_blocknr-to-use-folios
+++ a/fs/ufs/balloc.c
@@ -240,6 +240,7 @@ static void ufs_change_blocknr(struct in
unsigned int count, sector_t oldb,
sector_t newb, struct page *locked_page)
{
+ struct folio *folio, *locked_folio = page_folio(locked_page);
const unsigned blks_per_page =
1 << (PAGE_SHIFT - inode->i_blkbits);
const unsigned mask = blks_per_page - 1;
@@ -247,42 +248,39 @@ static void ufs_change_blocknr(struct in
pgoff_t index, cur_index, last_index;
unsigned pos, j, lblock;
sector_t end, i;
- struct page *page;
struct buffer_head *head, *bh;
UFSD("ENTER, ino %lu, count %u, oldb %llu, newb %llu\n",
inode->i_ino, count,
(unsigned long long)oldb, (unsigned long long)newb);
- BUG_ON(!locked_page);
- BUG_ON(!PageLocked(locked_page));
+ BUG_ON(!folio_test_locked(locked_folio));
- cur_index = locked_page->index;
+ cur_index = locked_folio->index;
end = count + beg;
last_index = end >> (PAGE_SHIFT - inode->i_blkbits);
for (i = beg; i < end; i = (i | mask) + 1) {
index = i >> (PAGE_SHIFT - inode->i_blkbits);
if (likely(cur_index != index)) {
- page = ufs_get_locked_page(mapping, index);
- if (!page)/* it was truncated */
+ folio = ufs_get_locked_folio(mapping, index);
+ if (!folio) /* it was truncated */
continue;
- if (IS_ERR(page)) {/* or EIO */
+ if (IS_ERR(folio)) {/* or EIO */
ufs_error(inode->i_sb, __func__,
"read of page %llu failed\n",
(unsigned long long)index);
continue;
}
} else
- page = locked_page;
+ folio = locked_folio;
- head = page_buffers(page);
+ head = folio_buffers(folio);
bh = head;
pos = i & mask;
for (j = 0; j < pos; ++j)
bh = bh->b_this_page;
-
if (unlikely(index == last_index))
lblock = end & mask;
else
@@ -313,7 +311,7 @@ static void ufs_change_blocknr(struct in
} while (bh != head);
if (likely(cur_index != index))
- ufs_put_locked_page(page);
+ ufs_put_locked_folio(folio);
}
UFSD("EXIT\n");
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
