Commit 8b8d9a2d authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Andrew Morton

ufs: don't flush page immediately for DIRSYNC directories

Patch series "remove most callers of write_one_page", v4.

This series removes most users of the write_one_page API.  These helpers
internally call ->writepage which we are gradually removing from the
kernel.


This patch (of 3):

We do not need to writeout modified directory blocks immediately when
modifying them while the page is locked.  It is enough to do the flush
somewhat later which has the added benefit that inode times can be flushed
as well.  It also allows us to stop depending on write_one_page()
function.

Ported from an ext2 patch by Jan Kara.

Link: https://lkml.kernel.org/r/20230307143125.27778-1-hch@lst.de
Link: https://lkml.kernel.org/r/20230307143125.27778-2-hch@lst.deSigned-off-by: default avatarChristoph Hellwig <hch@lst.de>
Cc: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Cc: Jan Kara via Ocfs2-devel <ocfs2-devel@oss.oracle.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 6204c9ab
......@@ -42,11 +42,10 @@ static inline int ufs_match(struct super_block *sb, int len,
return !memcmp(name, de->d_name, len);
}
static int ufs_commit_chunk(struct page *page, loff_t pos, unsigned len)
static void ufs_commit_chunk(struct page *page, loff_t pos, unsigned len)
{
struct address_space *mapping = page->mapping;
struct inode *dir = mapping->host;
int err = 0;
inode_inc_iversion(dir);
block_write_end(NULL, mapping, pos, len, len, page, NULL);
......@@ -54,10 +53,16 @@ static int ufs_commit_chunk(struct page *page, loff_t pos, unsigned len)
i_size_write(dir, pos+len);
mark_inode_dirty(dir);
}
if (IS_DIRSYNC(dir))
err = write_one_page(page);
else
unlock_page(page);
}
static int ufs_handle_dirsync(struct inode *dir)
{
int err;
err = filemap_write_and_wait(dir->i_mapping);
if (!err)
err = sync_inode_metadata(dir, 1);
return err;
}
......@@ -99,11 +104,12 @@ void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
de->d_ino = cpu_to_fs32(dir->i_sb, inode->i_ino);
ufs_set_de_type(dir->i_sb, de, inode->i_mode);
err = ufs_commit_chunk(page, pos, len);
ufs_commit_chunk(page, pos, len);
ufs_put_page(page);
if (update_times)
dir->i_mtime = dir->i_ctime = current_time(dir);
mark_inode_dirty(dir);
ufs_handle_dirsync(dir);
}
......@@ -390,10 +396,11 @@ int ufs_add_link(struct dentry *dentry, struct inode *inode)
de->d_ino = cpu_to_fs32(sb, inode->i_ino);
ufs_set_de_type(sb, de, inode->i_mode);
err = ufs_commit_chunk(page, pos, rec_len);
ufs_commit_chunk(page, pos, rec_len);
dir->i_mtime = dir->i_ctime = current_time(dir);
mark_inode_dirty(dir);
err = ufs_handle_dirsync(dir);
/* OFFSET_CACHE */
out_put:
ufs_put_page(page);
......@@ -531,9 +538,10 @@ int ufs_delete_entry(struct inode *inode, struct ufs_dir_entry *dir,
if (pde)
pde->d_reclen = cpu_to_fs16(sb, to - from);
dir->d_ino = 0;
err = ufs_commit_chunk(page, pos, to - from);
ufs_commit_chunk(page, pos, to - from);
inode->i_ctime = inode->i_mtime = current_time(inode);
mark_inode_dirty(inode);
err = ufs_handle_dirsync(inode);
out:
ufs_put_page(page);
UFSD("EXIT\n");
......@@ -579,7 +587,8 @@ int ufs_make_empty(struct inode * inode, struct inode *dir)
strcpy (de->d_name, "..");
kunmap(page);
err = ufs_commit_chunk(page, 0, chunk_size);
ufs_commit_chunk(page, 0, chunk_size);
err = ufs_handle_dirsync(inode);
fail:
put_page(page);
return err;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment