From 1db1ff92b6ce2247999787480c2eeb63a1811e79 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Wed, 15 Jun 2016 10:33:06 -0400 Subject: [PATCH] btrfs: convert nodesize macros to static inlines This patch converts the macros used to calculate various node size limits to static inlines. That way we get type checking for free. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 48 +++++++++++++++++++++++++++++++++--------------- 1 file changed, 33 insertions(+), 15 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 1d46ceec1fc0..85e0b608b7c0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -145,21 +145,6 @@ struct btrfs_header { u8 level; } __attribute__ ((__packed__)); -#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ - sizeof(struct btrfs_header)) / \ - sizeof(struct btrfs_key_ptr)) -#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) -#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize)) -#define BTRFS_MAX_ITEM_SIZE(r) \ - (BTRFS_LEAF_DATA_SIZE(r) - sizeof(struct btrfs_item)) -#define BTRFS_FILE_EXTENT_INLINE_DATA_START \ - (offsetof(struct btrfs_file_extent_item, disk_bytenr)) -#define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_MAX_ITEM_SIZE(r) - \ - BTRFS_FILE_EXTENT_INLINE_DATA_START) -#define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_MAX_ITEM_SIZE(r) - \ - sizeof(struct btrfs_dir_item)) - - /* * this is a very generous portion of the super block, giving us * room to translate 14 chunks with 3 stripes each. @@ -1261,6 +1246,39 @@ struct btrfs_root { atomic_t qgroup_meta_rsv; }; +static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 blocksize) +{ + return blocksize - sizeof(struct btrfs_header); +} + +static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_root *root) +{ + return __BTRFS_LEAF_DATA_SIZE(root->nodesize); +} + +static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_root *root) +{ + return BTRFS_LEAF_DATA_SIZE(root) - sizeof(struct btrfs_item); +} + +static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_root *root) +{ + return BTRFS_LEAF_DATA_SIZE(root) / sizeof(struct btrfs_key_ptr); +} + +#define BTRFS_FILE_EXTENT_INLINE_DATA_START \ + (offsetof(struct btrfs_file_extent_item, disk_bytenr)) +static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_root *root) +{ + return BTRFS_MAX_ITEM_SIZE(root) - + BTRFS_FILE_EXTENT_INLINE_DATA_START; +} + +static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_root *root) +{ + return BTRFS_MAX_ITEM_SIZE(root) - sizeof(struct btrfs_dir_item); +} + /* * Flags for mount options. * -- 2.20.1