[PATCH 4/6] Btrfs: fix wrong max inline data size limit

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inline data is stored from offset of @disk_bytenr in
struct btrfs_file_extent_item. So substracting total
size of struct btrfs_file_extent_item is wrong, fix it.

Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
---
 fs/btrfs/ctree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index be91397..22fbd04 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -394,7 +394,7 @@ struct btrfs_header {
 #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
 #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
 					sizeof(struct btrfs_item) - \
-					sizeof(struct btrfs_file_extent_item))
+					offsetof(struct btrfs_file_extent_item, disk_bytenr))
 #define BTRFS_MAX_XATTR_SIZE(r)	(BTRFS_LEAF_DATA_SIZE(r) - \
 				 sizeof(struct btrfs_item) -\
 				 sizeof(struct btrfs_dir_item))
-- 
1.8.2.1

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