[PATCH 2/3] libxfs: clean up xfs_da_unmount usage

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Replace the open-coded xfs_da_unmount usage in libxfs_umount and teach
libxfs_mount not to leak the dir/attr geometry structures when the mount
attempt fails.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
 libxfs/init.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)


diff --git a/libxfs/init.c b/libxfs/init.c
index c9c61ac18..b2d7bc136 100644
--- a/libxfs/init.c
+++ b/libxfs/init.c
@@ -721,7 +721,7 @@ libxfs_mount(
 	if (error) {
 		fprintf(stderr, _("%s: data size check failed\n"), progname);
 		if (!xfs_is_debugger(mp))
-			return NULL;
+			goto out_da;
 	} else
 		libxfs_buf_relse(bp);
 
@@ -735,7 +735,7 @@ libxfs_mount(
 			fprintf(stderr, _("%s: log size checks failed\n"),
 					progname);
 			if (!xfs_is_debugger(mp))
-				return NULL;
+				goto out_da;
 		}
 		if (bp)
 			libxfs_buf_relse(bp);
@@ -746,8 +746,8 @@ libxfs_mount(
 	/* Initialize realtime fields in the mount structure */
 	if (rtmount_init(mp)) {
 		fprintf(stderr, _("%s: realtime device init failed\n"),
-			progname);
-			return NULL;
+				progname);
+			goto out_da;
 	}
 
 	/*
@@ -765,7 +765,7 @@ libxfs_mount(
 			fprintf(stderr, _("%s: read of AG %u failed\n"),
 						progname, sbp->sb_agcount);
 			if (!xfs_is_debugger(mp))
-				return NULL;
+				goto out_da;
 			fprintf(stderr, _("%s: limiting reads to AG 0\n"),
 								progname);
 			sbp->sb_agcount = 1;
@@ -783,6 +783,9 @@ libxfs_mount(
 	xfs_set_perag_data_loaded(mp);
 
 	return mp;
+out_da:
+	xfs_da_unmount(mp);
+	return NULL;
 }
 
 void
@@ -905,8 +908,7 @@ libxfs_umount(
 	if (xfs_is_perag_data_loaded(mp))
 		libxfs_free_perag(mp);
 
-	kmem_free(mp->m_attr_geo);
-	kmem_free(mp->m_dir_geo);
+	xfs_da_unmount(mp);
 
 	free(mp->m_fsname);
 	mp->m_fsname = NULL;