The patch titled
Subject: nilfs2: convert nilfs_page_mkwrite() to use a folio
has been added to the -mm mm-nonmm-unstable branch. Its filename is
nilfs2-convert-nilfs_page_mkwrite-to-use-a-folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/nilfs2-convert-nilfs_page_mkwrite-to-use-a-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: nilfs2: convert nilfs_page_mkwrite() to use a folio
Date: Tue, 14 Nov 2023 17:44:27 +0900
Using the new folio APIs saves seven hidden calls to compound_head().
Link: https://lkml.kernel.org/r/20231114084436.2755-12-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/file.c | 28 +++++++++++++++-------------
1 file changed, 15 insertions(+), 13 deletions(-)
--- a/fs/nilfs2/file.c~nilfs2-convert-nilfs_page_mkwrite-to-use-a-folio
+++ a/fs/nilfs2/file.c
@@ -45,34 +45,36 @@ int nilfs_sync_file(struct file *file, l
static vm_fault_t nilfs_page_mkwrite(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
- struct page *page = vmf->page;
+ struct folio *folio = page_folio(vmf->page);
struct inode *inode = file_inode(vma->vm_file);
struct nilfs_transaction_info ti;
+ struct buffer_head *bh, *head;
int ret = 0;
if (unlikely(nilfs_near_disk_full(inode->i_sb->s_fs_info)))
return VM_FAULT_SIGBUS; /* -ENOSPC */
sb_start_pagefault(inode->i_sb);
- lock_page(page);
- if (page->mapping != inode->i_mapping ||
- page_offset(page) >= i_size_read(inode) || !PageUptodate(page)) {
- unlock_page(page);
+ folio_lock(folio);
+ if (folio->mapping != inode->i_mapping ||
+ folio_pos(folio) >= i_size_read(inode) ||
+ !folio_test_uptodate(folio)) {
+ folio_unlock(folio);
ret = -EFAULT; /* make the VM retry the fault */
goto out;
}
/*
- * check to see if the page is mapped already (no holes)
+ * check to see if the folio is mapped already (no holes)
*/
- if (PageMappedToDisk(page))
+ if (folio_test_mappedtodisk(folio))
goto mapped;
- if (page_has_buffers(page)) {
- struct buffer_head *bh, *head;
+ head = folio_buffers(folio);
+ if (head) {
int fully_mapped = 1;
- bh = head = page_buffers(page);
+ bh = head;
do {
if (!buffer_mapped(bh)) {
fully_mapped = 0;
@@ -81,11 +83,11 @@ static vm_fault_t nilfs_page_mkwrite(str
} while (bh = bh->b_this_page, bh != head);
if (fully_mapped) {
- SetPageMappedToDisk(page);
+ folio_set_mappedtodisk(folio);
goto mapped;
}
}
- unlock_page(page);
+ folio_unlock(folio);
/*
* fill hole blocks
@@ -105,7 +107,7 @@ static vm_fault_t nilfs_page_mkwrite(str
nilfs_transaction_commit(inode->i_sb);
mapped:
- wait_for_stable_page(page);
+ folio_wait_stable(folio);
out:
sb_end_pagefault(inode->i_sb);
return vmf_fs_error(ret);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-add-folio_zero_tail-and-use-it-in-ext4.patch
mm-add-folio_fill_tail-and-use-it-in-iomap.patch
gfs2-convert-stuffed_readpage-to-stuffed_read_folio.patch
mm-remove-test_set_page_writeback.patch
afs-do-not-test-the-return-value-of-folio_start_writeback.patch
smb-do-not-test-the-return-value-of-folio_start_writeback.patch
mm-return-void-from-folio_start_writeback-and-related-functions.patch
mm-make-mapping_evict_folio-the-preferred-way-to-evict-clean-folios.patch
mm-convert-__do_fault-to-use-a-folio.patch
mm-use-mapping_evict_folio-in-truncate_error_page.patch
mm-convert-soft_offline_in_use_page-to-use-a-folio.patch
mm-convert-isolate_page-to-mf_isolate_folio.patch
mm-remove-invalidate_inode_page.patch
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
gfp-include-__gfp_nowarn-in-gfp_nowait.patch
nilfs2-add-nilfs_end_folio_io.patch
nilfs2-convert-nilfs_abort_logs-to-use-folios.patch
nilfs2-convert-nilfs_segctor_complete_write-to-use-folios.patch
nilfs2-convert-nilfs_forget_buffer-to-use-a-folio.patch
nilfs2-convert-to-nilfs_folio_buffers_clean.patch
nilfs2-convert-nilfs_writepage-to-use-a-folio.patch
nilfs2-convert-nilfs_mdt_write_page-to-use-a-folio.patch
nilfs2-convert-to-nilfs_clear_folio_dirty.patch
nilfs2-convert-to-__nilfs_clear_folio_dirty.patch
nilfs2-convert-nilfs_segctor_prepare_write-to-use-folios.patch
nilfs2-convert-nilfs_page_mkwrite-to-use-a-folio.patch
nilfs2-convert-nilfs_mdt_create_block-to-use-a-folio.patch
nilfs2-convert-nilfs_mdt_submit_block-to-use-a-folio.patch
nilfs2-convert-nilfs_gccache_submit_read_data-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_create_block-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_submit_block-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_delete-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_prepare_change_key-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_commit_change_key-to-use-a-folio.patch
nilfs2-convert-nilfs_btnode_abort_change_key-to-use-a-folio.patch
