linux-ext4 - [PATCH 21/25] misc: use the checksum predicate function, not raw flag tests

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Date:	Thu, 17 Oct 2013 21:51:16 -0700
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	tytso@....edu, darrick.wong@...cle.com
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH 21/25] misc: use the checksum predicate function,
 not raw flag tests

metadata_csum implies uninit_bg, and in fact forces the bit off for
rocompat with older implementations.  Therefore, to detect the
presence of checksums, we should use the predicate function to decide
if group descriptor checksums are turned on, not open-coded flag
tests.

Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
 misc/e2image.c     |    4 +---
 resize/resize2fs.c |    4 +---
 2 files changed, 2 insertions(+), 6 deletions(-)


diff --git a/misc/e2image.c b/misc/e2image.c
index 4a5bb22..a466fe8 100644
--- a/misc/e2image.c
+++ b/misc/e2image.c
@@ -349,9 +349,7 @@ static void mark_table_blocks(ext2_filsys fs)
 		    ext2fs_inode_table_loc(fs, i)) {
 			unsigned int end = (unsigned) fs->inode_blocks_per_group;
 			/* skip unused blocks */
-			if (!output_is_blk &&
-			    EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
-						       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
+			if (!output_is_blk && ext2fs_has_group_desc_csum(fs))
 				end -= (ext2fs_bg_itable_unused(fs, i) /
 					EXT2_INODES_PER_BLOCK(fs->super));
 			for (j = 0, b = ext2fs_inode_table_loc(fs, i);
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index b351cc6..440c20e 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -1012,9 +1012,7 @@ static errcode_t adjust_superblock(ext2_resize_t rfs, blk64_t new_size)
 	 * supports lazy inode initialization, we can skip
 	 * initializing the inode table.
 	 */
-	if (lazy_itable_init &&
-	    EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
-				       EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+	if (lazy_itable_init && ext2fs_has_group_desc_csum(fs)) {
 		retval = 0;
 		goto errout;
 	}

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