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Date:   Tue, 15 Jan 2019 17:35:20 +0100
From:   Greg Kroah-Hartman <>
Cc:     Greg Kroah-Hartman <>,, Arnd Bergmann <>,
        David Sterba <>,
        Ben Hutchings <>
Subject: [PATCH 4.4 24/51] btrfs: tree-checker: use %zu format string for size_t

4.4-stable review patch.  If anyone has any objections, please let me know.


From: Arnd Bergmann <>

commit 7cfad65297bfe0aa2996cd72d21c898aa84436d9 upstream.

The return value of sizeof() is of type size_t, so we must print it
using the %z format modifier rather than %l to avoid this warning
on some architectures:

fs/btrfs/tree-checker.c: In function 'check_dir_item':
fs/btrfs/tree-checker.c:273:50: error: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'u32' {aka 'unsigned int'} [-Werror=format=]

Fixes: 005887f2e3e0 ("btrfs: tree-checker: Add checker for dir item")
Signed-off-by: Arnd Bergmann <>
Reviewed-by: David Sterba <>
Signed-off-by: David Sterba <>
Signed-off-by: Ben Hutchings <>
Signed-off-by: Greg Kroah-Hartman <>
 fs/btrfs/tree-checker.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -223,7 +223,7 @@ static int check_dir_item(struct btrfs_r
 		/* header itself should not cross item boundary */
 		if (cur + sizeof(*di) > item_size) {
 			dir_item_err(root, leaf, slot,
-		"dir item header crosses item boundary, have %lu boundary %u",
+		"dir item header crosses item boundary, have %zu boundary %u",
 				cur + sizeof(*di), item_size);
 			return -EUCLEAN;

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