diff options
| author |  Christoph Hellwig <hch@lst.de>
| 2023-08-09 15:05:38 -0700 |
|---|---|---|
| committer |  Christian Brauner <brauner@kernel.org>
| 2023-08-10 10:34:54 +0200 |
| commit | 35a93b148b0363dca23c3db1cc9d48100eb8b276 (patch) | |
| tree | d7cf3ee01ec49c0903f2450aaebfafdc6b0cfc41 /fs/xfs | |
| parent | xfs: close the RT and log block devices in xfs_free_buftarg (diff) | |
| download | linux-35a93b148b0363dca23c3db1cc9d48100eb8b276.tar.gz linux-35a93b148b0363dca23c3db1cc9d48100eb8b276.tar.bz2 linux-35a93b148b0363dca23c3db1cc9d48100eb8b276.zip | |
xfs: close the external block devices in xfs_mount_free
blkdev_put must not be called under sb->s_umount to avoid a lock order
reversal with disk->open_mutex. Move closing the buftargs into ->kill_sb
to archive that. Note that the flushing of the disk caches and
block device mapping invalidated needs to stay in ->put_super as the main
block device is closed in kill_block_super already.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Message-Id: <20230809220545.1308228-7-hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_buf.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_super.c | 36 |
2 files changed, 22 insertions, 16 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 65110df78e13..f2e5a2c78dc4 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1945,8 +1945,6 @@ xfs_free_buftarg( percpu_counter_destroy(&btp->bt_io_count); list_lru_destroy(&btp->bt_lru); - blkdev_issue_flush(btp->bt_bdev); - invalidate_bdev(btp->bt_bdev); fs_put_dax(btp->bt_daxdev, btp->bt_mount); /* the main block device is closed by kill_block_super */ if (bdev != btp->bt_mount->m_super->s_bdev) diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 332e32d8ca5a..18d34e802aac 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -407,22 +407,19 @@ xfs_blkdev_get( } STATIC void -xfs_close_devices( +xfs_shutdown_devices( struct xfs_mount *mp) { if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { - struct block_device *logdev = mp->m_logdev_targp->bt_bdev; - - xfs_free_buftarg(mp->m_logdev_targp); - blkdev_put(logdev, mp); + blkdev_issue_flush(mp->m_logdev_targp->bt_bdev); + invalidate_bdev(mp->m_logdev_targp->bt_bdev); } if (mp->m_rtdev_targp) { - struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; - - xfs_free_buftarg(mp->m_rtdev_targp); - blkdev_put(rtdev, mp); + blkdev_issue_flush(mp->m_rtdev_targp->bt_bdev); + invalidate_bdev(mp->m_rtdev_targp->bt_bdev); } - xfs_free_buftarg(mp->m_ddev_targp); + blkdev_issue_flush(mp->m_ddev_targp->bt_bdev); + invalidate_bdev(mp->m_ddev_targp->bt_bdev); } /* @@ -750,6 +747,17 @@ static void xfs_mount_free( struct xfs_mount *mp) { + /* + * Free the buftargs here because blkdev_put needs to be called outside + * of sb->s_umount, which is held around the call to ->put_super. + */ + if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) + xfs_free_buftarg(mp->m_logdev_targp); + if (mp->m_rtdev_targp) + xfs_free_buftarg(mp->m_rtdev_targp); + if (mp->m_ddev_targp) + xfs_free_buftarg(mp->m_ddev_targp); + kfree(mp->m_rtname); kfree(mp->m_logname); kmem_free(mp); @@ -1135,7 +1143,7 @@ xfs_fs_put_super( xfs_inodegc_free_percpu(mp); xfs_destroy_percpu_counters(mp); xfs_destroy_mount_workqueues(mp); - xfs_close_devices(mp); + xfs_shutdown_devices(mp); } static long @@ -1508,7 +1516,7 @@ xfs_fs_fill_super( error = xfs_init_mount_workqueues(mp); if (error) - goto out_close_devices; + goto out_shutdown_devices; error = xfs_init_percpu_counters(mp); if (error) @@ -1722,8 +1730,8 @@ xfs_fs_fill_super( xfs_destroy_percpu_counters(mp); out_destroy_workqueues: xfs_destroy_mount_workqueues(mp); - out_close_devices: - xfs_close_devices(mp); + out_shutdown_devices: + xfs_shutdown_devices(mp); return error; out_unmount: |