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Btrfs: split out level field in struct header

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-03-27 09:06:38 -04:00
committed by David Woodhouse
parent 6407bf6d7c
commit 9a6f11ed8f
3 changed files with 4 additions and 10 deletions
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8
fs/btrfs/ctree.h
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@@ -59,7 +59,7 @@ struct btrfs_header {
__le32 ham;
__le16 nritems;
__le16 flags;
/* generation flags to be added */
u8 level;
} __attribute__ ((__packed__));
#define BTRFS_MAX_LEVEL 8
@@ -648,15 +648,13 @@ static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val)
static inline int btrfs_header_level(struct btrfs_header *h)
{
return btrfs_header_flags(h) & (BTRFS_MAX_LEVEL - 1);
return h->level;
}
static inline void btrfs_set_header_level(struct btrfs_header *h, int level)
{
u16 flags;
BUG_ON(level > BTRFS_MAX_LEVEL);
flags = btrfs_header_flags(h) & ~(BTRFS_MAX_LEVEL - 1);
btrfs_set_header_flags(h, flags | level);
h->level = level;
}
static inline int btrfs_is_leaf(struct btrfs_node *n)