The patch titled
Subject: ocfs2: use a folio in ocfs2_fast_symlink_read_folio()
has been added to the -mm mm-nonmm-unstable branch. Its filename is
ocfs2-use-a-folio-in-ocfs2_fast_symlink_read_folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ocfs2-use-a-folio-in-ocfs2_fast_symlink_read_folio.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: ocfs2: use a folio in ocfs2_fast_symlink_read_folio()
Date: Thu, 5 Dec 2024 17:16:48 +0000
Use folio_end_read() instead of SetPageUptodate() and unlock_page(). Use
memcpy_to_folio() instead of open-coding a kmap_atomic() sequence.
Link: https://lkml.kernel.org/r/20241205171653.3179945-21-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx>
Cc: Changwei Ge <gechangwei@xxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Mark Fasheh <mark@xxxxxxxxxx>
Cc: Mark Tinguely <mark.tinguely@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/symlink.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
--- a/fs/ocfs2/symlink.c~ocfs2-use-a-folio-in-ocfs2_fast_symlink_read_folio
+++ a/fs/ocfs2/symlink.c
@@ -54,13 +54,11 @@
static int ocfs2_fast_symlink_read_folio(struct file *f, struct folio *folio)
{
- struct page *page = &folio->page;
- struct inode *inode = page->mapping->host;
+ struct inode *inode = folio->mapping->host;
struct buffer_head *bh = NULL;
int status = ocfs2_read_inode_block(inode, &bh);
struct ocfs2_dinode *fe;
const char *link;
- void *kaddr;
size_t len;
if (status < 0) {
@@ -72,12 +70,9 @@ static int ocfs2_fast_symlink_read_folio
link = (char *) fe->id2.i_symlink;
/* will be less than a page size */
len = strnlen(link, ocfs2_fast_symlink_chars(inode->i_sb));
- kaddr = kmap_atomic(page);
- memcpy(kaddr, link, len + 1);
- kunmap_atomic(kaddr);
- SetPageUptodate(page);
+ memcpy_to_folio(folio, 0, link, len + 1);
out:
- unlock_page(page);
+ folio_end_read(folio, status == 0);
brelse(bh);
return status;
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
vmalloc-fix-accounting-with-i915.patch
mm-page_alloc-cache-page_zone-result-in-free_unref_page.patch
mm-make-alloc_pages_mpol-static.patch
mm-page_alloc-export-free_frozen_pages-instead-of-free_unref_page.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-post_alloc_hook.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-prep_new_page.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-get_page_from_freelist.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_cpuset_fallback.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_may_oom.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_reclaim.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_slowpath.patch
mm-page_alloc-move-set_page_refcounted-to-end-of-__alloc_pages.patch
mm-page_alloc-add-__alloc_frozen_pages.patch
mm-mempolicy-add-alloc_frozen_pages.patch
slab-allocate-frozen-pages.patch
ocfs2-handle-a-symlink-read-error-correctly.patch
ocfs2-convert-ocfs2_page_mkwrite-to-use-a-folio.patch
ocfs2-pass-mmap_folio-around-instead-of-mmap_page.patch
ocfs2-convert-ocfs2_read_inline_data-to-take-a-folio.patch
ocfs2-use-a-folio-in-ocfs2_fast_symlink_read_folio.patch
ocfs2-remove-ocfs2_start_walk_page_trans-prototype.patch
