From: Darrick J. Wong <[email protected]> Create an alias for the debugfs dir so that we can find a filesystem by uuid. Unless it's mounted nouuid.
Signed-off-by: Darrick J. Wong <[email protected]> --- fs/xfs/xfs_mount.h | 1 + fs/xfs/xfs_super.c | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 7cfd209404365..63649c259b9c5 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -235,6 +235,7 @@ typedef struct xfs_mount { uint64_t m_resblks_save; /* reserved blks @ remount,ro */ struct delayed_work m_reclaim_work; /* background inode reclaim */ struct dentry *m_debugfs; /* debugfs parent */ + struct dentry *m_debugfs_uuid; /* debugfs symlink */ struct xfs_kobj m_kobj; struct xfs_kobj m_error_kobj; struct xfs_kobj m_error_meta_kobj; diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 69f1c1d85edf6..29a53874490cc 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -768,6 +768,7 @@ xfs_mount_free( if (mp->m_ddev_targp) xfs_free_buftarg(mp->m_ddev_targp); + debugfs_remove(mp->m_debugfs_uuid); debugfs_remove(mp->m_debugfs); xfs_timestats_destroy(mp); kfree(mp->m_rtname); @@ -1799,6 +1800,16 @@ xfs_fs_fill_super( goto out_unmount; } + if (xfs_debugfs && mp->m_debugfs && !xfs_has_nouuid(mp)) { + char name[UUID_STRING_LEN + 1]; + + snprintf(name, UUID_STRING_LEN + 1, "%pU", &mp->m_sb.sb_uuid); + mp->m_debugfs_uuid = debugfs_create_symlink(name, xfs_debugfs, + mp->m_super->s_id); + } else { + mp->m_debugfs_uuid = NULL; + } + return 0; out_filestream_unmount:
