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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 2/7] ovl: mark overlayfs inode dirty when it has upper
Date: Mon, 22 Nov 2021 11:00:33 +0800	[thread overview]
Message-ID: <20211122030038.1938875-3-cgxu519@mykernel.net> (raw)
In-Reply-To: <20211122030038.1938875-1-cgxu519@mykernel.net>

From: Chengguang Xu <charliecgxu@tencent.com>

We simply mark overlayfs inode dirty when it has upper,
it's much simpler than mark dirtiness on modification.

Signed-off-by: Chengguang Xu <charliecgxu@tencent.com>
---
 fs/overlayfs/inode.c | 4 +++-
 fs/overlayfs/util.c  | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 1f36158c7dbe..027ffc0a2539 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -778,8 +778,10 @@ void ovl_inode_init(struct inode *inode, struct ovl_inode_params *oip,
 {
 	struct inode *realinode;
 
-	if (oip->upperdentry)
+	if (oip->upperdentry) {
 		OVL_I(inode)->__upperdentry = oip->upperdentry;
+		mark_inode_dirty(inode);
+	}
 	if (oip->lowerpath && oip->lowerpath->dentry)
 		OVL_I(inode)->lower = igrab(d_inode(oip->lowerpath->dentry));
 	if (oip->lowerdata)
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index f48284a2a896..a1922af32a13 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -421,6 +421,7 @@ void ovl_inode_update(struct inode *inode, struct dentry *upperdentry)
 		inode->i_private = upperinode;
 		__insert_inode_hash(inode, (unsigned long) upperinode);
 	}
+	mark_inode_dirty(inode);
 }
 
 static void ovl_dir_version_inc(struct dentry *dentry, bool impurity)
-- 
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 ` Chengguang Xu [this message]
2021-11-26  9:10   ` [RFC PATCH V6 2/7] ovl: mark overlayfs inode dirty when it has upper 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 ` [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev() Chengguang Xu
2021-11-26  9:21   ` 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

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