linux-ext4 - [PATCH] misc: quiet unused variable warnings

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Date:   Thu,  4 Aug 2022 11:15:11 -0600
From:   Andreas Dilger <adilger@...mcloud.com>
To:     tytso@....edu
Cc:     linux-ext4@...r.kernel.org, Andreas Dilger <adilger@...mcloud.com>
Subject: [PATCH] misc: quiet unused variable warnings

Quiet unreferenced variable warning if jbd_debug() is a no-op.
Quiet unset variable warning because compiler is dumb.

Signed-off-by: Andreas Dilger <adilger@...mcloud.com>
---
 e2fsck/journal.c    | 15 +++++++--------
 lib/ext2fs/swapfs.c |  2 +-
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/e2fsck/journal.c b/e2fsck/journal.c
index 12487e3d..571de83e 100644
--- a/e2fsck/journal.c
+++ b/e2fsck/journal.c
@@ -620,7 +620,6 @@ static inline int tl_to_darg(struct dentry_info_args *darg,
 			     struct  ext4_fc_tl *tl, __u8 *val)
 {
 	struct ext4_fc_dentry_info fcd;
-	int tag = le16_to_cpu(tl->fc_tag);
 
 	memcpy(&fcd, val, sizeof(fcd));
 
@@ -636,10 +635,10 @@ static inline int tl_to_darg(struct dentry_info_args *darg,
 	       darg->dname_len);
 	darg->dname[darg->dname_len] = 0;
 	jbd_debug(1, "%s: %s, ino %lu, parent %lu\n",
-		tag == EXT4_FC_TAG_CREAT ? "create" :
-		(tag == EXT4_FC_TAG_LINK ? "link" :
-		(tag == EXT4_FC_TAG_UNLINK ? "unlink" : "error")),
-		darg->dname, darg->ino, darg->parent_ino);
+		  le16_to_cpu(tl->fc_tag) == EXT4_FC_TAG_CREAT ? "create" :
+		  (le16_to_cpu(tl->fc_tag) == EXT4_FC_TAG_LINK ? "link" :
+		   (le16_to_cpu(tl->fc_tag) == EXT4_FC_TAG_UNLINK ? "unlink" :
+		    "error")), darg->dname, darg->ino, darg->parent_ino);
 	return 0;
 }
 
@@ -652,11 +651,11 @@ static int ext4_fc_handle_unlink(e2fsck_t ctx, struct ext4_fc_tl *tl, __u8 *val)
 	if (ret)
 		return ret;
 	ext4_fc_flush_extents(ctx, darg.ino);
-	ret = errcode_to_errno(
-		       ext2fs_unlink(ctx->fs, darg.parent_ino,
-				     darg.dname, darg.ino, 0));
+	ret = errcode_to_errno(ext2fs_unlink(ctx->fs, darg.parent_ino,
+					     darg.dname, darg.ino, 0));
 	/* It's okay if the above call fails */
 	free(darg.dname);
+
 	return ret;
 }
 
diff --git a/lib/ext2fs/swapfs.c b/lib/ext2fs/swapfs.c
index 1006b2d2..cd160b31 100644
--- a/lib/ext2fs/swapfs.c
+++ b/lib/ext2fs/swapfs.c
@@ -244,7 +244,7 @@ void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
 			    int bufsize)
 {
 	unsigned i, extra_isize, attr_magic;
-	int has_extents, has_inline_data, islnk, fast_symlink;
+	int has_extents = 0, has_inline_data = 0, islnk = 0, fast_symlink = 0;
 	unsigned int inode_size;
 	__u32 *eaf, *eat;
 
-- 
2.25.1