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xfs: port to fs_bdev_file_open_by_path()

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Route the log and rt device opens through fs_bdev_file_open_by_path() so
each external device is registered against mp->m_super, and convert the
matching releases to fs_bdev_file_release(). The data device is still
opened and released by setup_bdev_super()/kill_block_super(); when the
log lives on the data device the open resolves to the existing (dev, sb)
entry so the superblock is acted on once.

Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260616-work-super-bdev_holder_global-v2-9-7df6b864028e@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2026-06-16 16:08:25 +02:00
parent 875c4965a7
commit fc376d1718
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GPG Key ID: 91C61BC06578DCA2
2 changed files with 6 additions and 6 deletions
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2
fs/xfs/xfs_buf.c
View File

@ -1615,7 +1615,7 @@ xfs_free_buftarg(
fs_put_dax(btp->bt_daxdev, btp->bt_mount);
/* the main block device is closed by kill_block_super */
if (btp->bt_bdev != btp->bt_mount->m_super->s_bdev)
bdev_fput(btp->bt_file);
fs_bdev_file_release(btp->bt_file, btp->bt_mount->m_super);
kfree(btp);
}

10
fs/xfs/xfs_super.c
View File

@ -400,8 +400,8 @@ xfs_blkdev_get(
blk_mode_t mode;
mode = sb_open_mode(mp->m_super->s_flags);
*bdev_filep = bdev_file_open_by_path(name, mode,
mp->m_super, &fs_holder_ops);
*bdev_filep = fs_bdev_file_open_by_path(name, mode,
mp->m_super, mp->m_super);
if (IS_ERR(*bdev_filep)) {
error = PTR_ERR(*bdev_filep);
*bdev_filep = NULL;
@ -526,7 +526,7 @@ xfs_open_devices(
mp->m_logdev_targp = mp->m_ddev_targp;
/* Handle won't be used, drop it */
if (logdev_file)
bdev_fput(logdev_file);
fs_bdev_file_release(logdev_file, mp->m_super);
}
return 0;
@ -538,10 +538,10 @@ xfs_open_devices(
xfs_free_buftarg(mp->m_ddev_targp);
out_close_rtdev:
if (rtdev_file)
bdev_fput(rtdev_file);
fs_bdev_file_release(rtdev_file, mp->m_super);
out_close_logdev:
if (logdev_file)
bdev_fput(logdev_file);
fs_bdev_file_release(logdev_file, mp->m_super);
return error;
}