The quilt patch titled
Subject: nilfs2: add nilfs_get_folio()
has been removed from the -mm tree. Its filename was
nilfs2-add-nilfs_get_folio.patch
This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: nilfs2: add nilfs_get_folio()
Date: Mon, 27 Nov 2023 23:30:28 +0900
Convert nilfs_get_page() to be a wrapper.
Also convert nilfs_check_page() to nilfs_check_folio().
Link: https://lkml.kernel.org/r/20231127143036.2425-10-konishi.ryusuke@xxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/nilfs2/dir.c | 53 +++++++++++++++++++++++++++-------------------
1 file changed, 32 insertions(+), 21 deletions(-)
--- a/fs/nilfs2/dir.c~nilfs2-add-nilfs_get_folio
+++ a/fs/nilfs2/dir.c
@@ -107,18 +107,18 @@ static void nilfs_commit_chunk(struct pa
unlock_page(page);
}
-static bool nilfs_check_page(struct page *page, char *kaddr)
+static bool nilfs_check_folio(struct folio *folio, char *kaddr)
{
- struct inode *dir = page->mapping->host;
+ struct inode *dir = folio->mapping->host;
struct super_block *sb = dir->i_sb;
unsigned int chunk_size = nilfs_chunk_size(dir);
- unsigned int offs, rec_len;
- unsigned int limit = PAGE_SIZE;
+ size_t offs, rec_len;
+ size_t limit = folio_size(folio);
struct nilfs_dir_entry *p;
char *error;
- if ((dir->i_size >> PAGE_SHIFT) == page->index) {
- limit = dir->i_size & ~PAGE_MASK;
+ if (dir->i_size < folio_pos(folio) + limit) {
+ limit = dir->i_size - folio_pos(folio);
if (limit & (chunk_size - 1))
goto Ebadsize;
if (!limit)
@@ -140,7 +140,7 @@ static bool nilfs_check_page(struct page
if (offs != limit)
goto Eend;
out:
- SetPageChecked(page);
+ folio_set_checked(folio);
return true;
/* Too bad, we had an error */
@@ -163,8 +163,8 @@ Espan:
error = "directory entry across blocks";
bad_entry:
nilfs_error(sb,
- "bad entry in directory #%lu: %s - offset=%lu, inode=%lu, rec_len=%d, name_len=%d",
- dir->i_ino, error, (page->index << PAGE_SHIFT) + offs,
+ "bad entry in directory #%lu: %s - offset=%lu, inode=%lu, rec_len=%zd, name_len=%d",
+ dir->i_ino, error, (folio->index << PAGE_SHIFT) + offs,
(unsigned long)le64_to_cpu(p->inode),
rec_len, p->name_len);
goto fail;
@@ -172,37 +172,48 @@ Eend:
p = (struct nilfs_dir_entry *)(kaddr + offs);
nilfs_error(sb,
"entry in directory #%lu spans the page boundary offset=%lu, inode=%lu",
- dir->i_ino, (page->index << PAGE_SHIFT) + offs,
+ dir->i_ino, (folio->index << PAGE_SHIFT) + offs,
(unsigned long)le64_to_cpu(p->inode));
fail:
- SetPageError(page);
+ folio_set_error(folio);
return false;
}
-static void *nilfs_get_page(struct inode *dir, unsigned long n,
- struct page **pagep)
+static void *nilfs_get_folio(struct inode *dir, unsigned long n,
+ struct folio **foliop)
{
struct address_space *mapping = dir->i_mapping;
- struct page *page = read_mapping_page(mapping, n, NULL);
+ struct folio *folio = read_mapping_folio(mapping, n, NULL);
void *kaddr;
- if (IS_ERR(page))
- return page;
+ if (IS_ERR(folio))
+ return folio;
- kaddr = kmap_local_page(page);
- if (unlikely(!PageChecked(page))) {
- if (!nilfs_check_page(page, kaddr))
+ kaddr = kmap_local_folio(folio, 0);
+ if (unlikely(!folio_test_checked(folio))) {
+ if (!nilfs_check_folio(folio, kaddr))
goto fail;
}
- *pagep = page;
+ *foliop = folio;
return kaddr;
fail:
- unmap_and_put_page(page, kaddr);
+ folio_release_kmap(folio, kaddr);
return ERR_PTR(-EIO);
}
+static void *nilfs_get_page(struct inode *dir, unsigned long n,
+ struct page **pagep)
+{
+ struct folio *folio;
+ void *kaddr = nilfs_get_folio(dir, n, &folio);
+
+ if (!IS_ERR(kaddr))
+ *pagep = &folio->page;
+ return kaddr;
+}
+
/*
* NOTE! unlike strncmp, nilfs_match returns 1 for success, 0 for failure.
*
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
buffer-return-bool-from-grow_dev_folio.patch
buffer-calculate-block-number-inside-folio_init_buffers.patch
buffer-fix-grow_buffers-for-block-size-page_size.patch
buffer-cast-block-to-loff_t-before-shifting-it.patch
buffer-fix-various-functions-for-block-size-page_size.patch
buffer-handle-large-folios-in-__block_write_begin_int.patch
buffer-fix-more-functions-for-block-size-page_size.patch
