LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Chengguang Xu <cgxu519@mykernel.net>
To: miklos@szeredi.hu, jack@suse.cz, amir73il@gmail.com
Cc: linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Chengguang Xu <charliecgxu@tencent.com>
Subject: [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev()
Date: Mon, 22 Nov 2021 11:00:37 +0800	[thread overview]
Message-ID: <20211122030038.1938875-7-cgxu519@mykernel.net> (raw)
In-Reply-To: <20211122030038.1938875-1-cgxu519@mykernel.net>

From: Chengguang Xu <charliecgxu@tencent.com>

Introduce new helper ovl_sync_upper_blockdev() to sync
upper blockdev.

Signed-off-by: Chengguang Xu <charliecgxu@tencent.com>
---
 fs/overlayfs/super.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 12acf0ec7395..ccffcd96491d 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -258,6 +258,16 @@ static void ovl_put_super(struct super_block *sb)
 	ovl_free_fs(ofs);
 }
 
+static int ovl_sync_upper_blockdev(struct super_block *sb, int wait)
+{
+	if (!sb->s_bdev)
+		return 0;
+
+	if (!wait)
+		return filemap_flush(sb->s_bdev->bd_inode->i_mapping);
+	return filemap_write_and_wait_range(sb->s_bdev->bd_inode->i_mapping, 0, LLONG_MAX);
+}
+
 /* Sync real dirty inodes in upper filesystem (if it exists) */
 static int ovl_sync_fs(struct super_block *sb, int wait)
 {
-- 
2.27.0



  parent reply	other threads:[~2021-11-22  3:16 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-22  3:00 [RFC PATCH V6 0/7] implement containerized syncfs for overlayfs Chengguang Xu
2021-11-22  3:00 ` [RFC PATCH V6 1/7] ovl: setup overlayfs' private bdi Chengguang Xu
2021-11-26  8:51   ` Jan Kara
2021-11-22  3:00 ` [RFC PATCH V6 2/7] ovl: mark overlayfs inode dirty when it has upper Chengguang Xu
2021-11-26  9:10   ` Jan Kara
2021-11-26 13:06     ` Chengguang Xu
2021-11-26 14:32       ` Jan Kara
2021-11-22  3:00 ` [RFC PATCH V6 3/7] ovl: implement overlayfs' own ->write_inode operation Chengguang Xu
2021-11-26  9:14   ` Jan Kara
2021-11-26 13:09     ` Chengguang Xu
2021-11-22  3:00 ` [RFC PATCH V6 4/7] ovl: set 'DONTCACHE' flag for overlayfs inode Chengguang Xu
2021-11-26  9:20   ` Jan Kara
2021-11-22  3:00 ` [RFC PATCH V6 5/7] fs: export wait_sb_inodes() Chengguang Xu
2021-11-26  9:20   ` Jan Kara
2021-11-22  3:00 ` Chengguang Xu [this message]
2021-11-26  9:21   ` [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev() Jan Kara
2021-11-22  3:00 ` [RFC PATCH V6 7/7] ovl: implement containerized syncfs for overlayfs Chengguang Xu
2021-11-22  7:40   ` Amir Goldstein
2021-11-26  5:03     ` Chengguang Xu
2021-11-26  9:25   ` Jan Kara
2021-11-27  9:26 ` 回复:[RFC PATCH V6 0/7] " Chengguang Xu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20211122030038.1938875-7-cgxu519@mykernel.net \
    --to=cgxu519@mykernel.net \
    --cc=amir73il@gmail.com \
    --cc=charliecgxu@tencent.com \
    --cc=jack@suse.cz \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-unionfs@vger.kernel.org \
    --cc=miklos@szeredi.hu \
    --subject='Re: [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).