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From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <brauner@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, linux-nilfs@vger.kernel.org,
	Jan Kara <jack@suse.cz>,
	linux-fsdevel@vger.kernel.org,
	"Darrick J. Wong" <djwong@kernel.org>,
	Josef Bacik <josef@toxicpanda.com>,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-xfs@vger.kernel.org, Chris Mason <clm@fb.com>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Jaegeuk Kim <jaegeuk@kernel.org>, David Sterba <dsterba@suse.com>,
	Theodore Ts'o <tytso@mit.edu>,
	linux-ext4@vger.kernel.org,
	Ryusuke Konishi <konishi.ryusuke@gmail.com>,
	linux-btrfs@vger.kernel.org
Subject: [PATCH 08/12] fs: export fs_holder_ops
Date: Wed,  2 Aug 2023 17:41:27 +0200	[thread overview]
Message-ID: <20230802154131.2221419-9-hch@lst.de> (raw)
In-Reply-To: <20230802154131.2221419-1-hch@lst.de>

Export fs_holder_ops so that file systems that open additional block
devices can use it as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/super.c             | 3 ++-
 include/linux/blkdev.h | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/super.c b/fs/super.c
index 0cda4af0a7e16c..dac05f96ab9ac8 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1244,9 +1244,10 @@ static void fs_mark_dead(struct block_device *bdev)
 	up_read(&sb->s_umount);
 }
 
-static const struct blk_holder_ops fs_holder_ops = {
+const struct blk_holder_ops fs_holder_ops = {
 	.mark_dead		= fs_mark_dead,
 };
+EXPORT_SYMBOL_GPL(fs_holder_ops);
 
 static int set_bdev_super(struct super_block *s, void *data)
 {
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index ed44a997f629f5..83262702eea71a 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1464,6 +1464,8 @@ struct blk_holder_ops {
 	void (*mark_dead)(struct block_device *bdev);
 };
 
+extern const struct blk_holder_ops fs_holder_ops;
+
 /*
  * Return the correct open flags for blkdev_get_by_* for super block flags
  * as stored in sb->s_flags.
-- 
2.39.2

  parent reply	other threads:[~2023-08-02 15:41 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-02 15:41 more blkdev_get and holder work Christoph Hellwig
     [not found] ` <20230802154131.2221419-1-hch-jcswGhMUV9g@public.gmane.org>
2023-08-02 15:41   ` [PATCH 01/12] fs: export setup_bdev_super Christoph Hellwig
2023-08-03 18:04     ` Christian Brauner
2023-09-04 18:11     ` [f2fs-dev] " patchwork-bot+f2fs
2023-08-02 15:41 ` [PATCH 02/12] nilfs2: use setup_bdev_super to de-duplicate the mount code Christoph Hellwig
     [not found]   ` <20230802154131.2221419-3-hch-jcswGhMUV9g@public.gmane.org>
2023-08-03 11:46     ` Jan Kara
2023-08-04  2:01       ` Ryusuke Konishi
2023-08-10 11:05         ` Jan Kara
2023-08-10 16:39           ` Ryusuke Konishi
     [not found]             ` <CAKFNMon_3A7dC+k1q_RjEnoXXNtxBJAUQud_FD4s4VrHZdCVzg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2023-08-10 18:14               ` Jan Kara
2023-08-04  5:04   ` Ryusuke Konishi
2023-08-02 15:41 ` [PATCH 03/12] btrfs: always open the device read-only in btrfs_scan_one_device Christoph Hellwig
2023-08-02 15:41 ` [PATCH 04/12] btrfs: open block devices after superblock creation Christoph Hellwig
2023-08-02 15:41 ` [PATCH 05/12] ext4: make the IS_EXT2_SB/IS_EXT3_SB checks more robust Christoph Hellwig
     [not found]   ` <20230802154131.2221419-6-hch-jcswGhMUV9g@public.gmane.org>
2023-08-03 11:21     ` Jan Kara
2023-08-03 18:10   ` Christian Brauner
2023-08-04 20:34   ` Theodore Ts'o
2023-08-02 15:41 ` [PATCH 06/12] fs: use the super_block as holder when mounting file systems Christoph Hellwig
     [not found]   ` <20230802154131.2221419-7-hch-jcswGhMUV9g@public.gmane.org>
2023-08-03 11:51     ` Jan Kara
2023-08-03 13:33       ` Jan Kara
2023-08-05  8:36         ` Christoph Hellwig
2023-08-03 18:11   ` Christian Brauner
2023-08-02 15:41 ` [PATCH 07/12] fs: stop using get_super in fs_mark_dead Christoph Hellwig
2023-08-03 13:12   ` Jan Kara
2023-08-03 18:15   ` Christian Brauner
2023-08-02 15:41 ` Christoph Hellwig [this message]
2023-08-03 13:16   ` [PATCH 08/12] fs: export fs_holder_ops Jan Kara
2023-08-03 18:15   ` Christian Brauner
2023-08-02 15:41 ` [PATCH 09/12] ext4: drop s_umount over opening the log device Christoph Hellwig
2023-08-03 13:25   ` Jan Kara
     [not found]   ` <20230802154131.2221419-10-hch-jcswGhMUV9g@public.gmane.org>
2023-08-03 18:16     ` Christian Brauner
2023-08-04 20:34   ` Theodore Ts'o
2023-08-02 15:41 ` [PATCH 10/12] ext4: use fs_holder_ops for " Christoph Hellwig
2023-08-03 13:26   ` Jan Kara
2023-08-02 15:41 ` [PATCH 11/12] xfs: drop s_umount over opening the log and RT devices Christoph Hellwig
     [not found]   ` <20230802154131.2221419-12-hch-jcswGhMUV9g@public.gmane.org>
2023-08-02 16:32     ` Darrick J. Wong
2023-08-05  8:32       ` Christoph Hellwig
2023-08-05 10:39         ` Christian Brauner
2023-08-05 16:19         ` Darrick J. Wong
2023-08-05 17:13           ` Christian Brauner
2023-08-02 15:41 ` [PATCH 12/12] xfs use fs_holder_ops for " Christoph Hellwig
2023-08-02 16:33   ` Darrick J. Wong
2023-08-14 10:58   ` Carlos Maiolino
2023-08-14 11:05   ` Carlos Maiolino
2023-08-04 15:39 ` more blkdev_get and holder work Christian Brauner

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