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xfs: move incore structures out of xfs_da_format.h

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Move the abstract in-memory version of various btree block headers
out of xfs_da_format.h as they aren't on-disk formats.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2019-11-08 14:52:06 -08:00 committed by Darrick J. Wong
parent 7f6bcf7c29
commit a39f089a25
6 changed files with 58 additions and 57 deletions
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23
fs/xfs/libxfs/xfs_attr_leaf.h
View file

@ -16,6 +16,29 @@ struct xfs_da_state_blk;
struct xfs_inode;
struct xfs_trans;
/*
* Incore version of the attribute leaf header.
*/
struct xfs_attr3_icleaf_hdr {
uint32_t forw;
uint32_t back;
uint16_t magic;
uint16_t count;
uint16_t usedbytes;
/*
* Firstused is 32-bit here instead of 16-bit like the on-disk variant
* to support maximum fsb size of 64k without overflow issues throughout
* the attr code. Instead, the overflow condition is handled on
* conversion to/from disk.
*/
uint32_t firstused;
__u8 holes;
struct {
uint16_t base;
uint16_t size;
} freemap[XFS_ATTR_LEAF_MAPSIZE];
};
/*
* Used to keep a list of "remote value" extents when unlinking an inode.
*/

13
fs/xfs/libxfs/xfs_da_btree.h
View file

@ -124,6 +124,19 @@ typedef struct xfs_da_state {
/* for dirv2 extrablk is data */
} xfs_da_state_t;
/*
* In-core version of the node header to abstract the differences in the v2 and
* v3 disk format of the headers. Callers need to convert to/from disk format as
* appropriate.
*/
struct xfs_da3_icnode_hdr {
uint32_t forw;
uint32_t back;
uint16_t magic;
uint16_t count;
uint16_t level;
};
/*
* Utility macros to aid in logging changed structure fields.
*/

1
fs/xfs/libxfs/xfs_da_format.c
View file

@ -13,6 +13,7 @@
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_dir2.h"
#include "xfs_dir2_priv.h"
/*
* Shortform directory ops

57
fs/xfs/libxfs/xfs_da_format.h
View file

@ -93,19 +93,6 @@ struct xfs_da3_intnode {
struct xfs_da_node_entry __btree[];
};
/*
* In-core version of the node header to abstract the differences in the v2 and
* v3 disk format of the headers. Callers need to convert to/from disk format as
* appropriate.
*/
struct xfs_da3_icnode_hdr {
uint32_t forw;
uint32_t back;
uint16_t magic;
uint16_t count;
uint16_t level;
};
/*
* Directory version 2.
*
@ -434,14 +421,6 @@ struct xfs_dir3_leaf_hdr {
__be32 pad; /* 64 bit alignment */
};
struct xfs_dir3_icleaf_hdr {
uint32_t forw;
uint32_t back;
uint16_t magic;
uint16_t count;
uint16_t stale;
};
/*
* Leaf block entry.
*/
@ -520,19 +499,6 @@ struct xfs_dir3_free {
#define XFS_DIR3_FREE_CRC_OFF offsetof(struct xfs_dir3_free, hdr.hdr.crc)
/*
* In core version of the free block header, abstracted away from on-disk format
* differences. Use this in the code, and convert to/from the disk version using
* xfs_dir3_free_hdr_from_disk/xfs_dir3_free_hdr_to_disk.
*/
struct xfs_dir3_icfree_hdr {
uint32_t magic;
uint32_t firstdb;
uint32_t nvalid;
uint32_t nused;
};
/*
* Single block format.
*
@ -709,29 +675,6 @@ struct xfs_attr3_leafblock {
*/
};
/*
* incore, neutral version of the attribute leaf header
*/
struct xfs_attr3_icleaf_hdr {
uint32_t forw;
uint32_t back;
uint16_t magic;
uint16_t count;
uint16_t usedbytes;
/*
* firstused is 32-bit here instead of 16-bit like the on-disk variant
* to support maximum fsb size of 64k without overflow issues throughout
* the attr code. Instead, the overflow condition is handled on
* conversion to/from disk.
*/
uint32_t firstused;
__u8 holes;
struct {
uint16_t base;
uint16_t size;
} freemap[XFS_ATTR_LEAF_MAPSIZE];
};
/*
* Special value to represent fs block size in the leaf header firstused field.
* Only used when block size overflows the 2-bytes available on disk.

2
fs/xfs/libxfs/xfs_dir2.h
View file

@ -18,6 +18,8 @@ struct xfs_dir2_sf_entry;
struct xfs_dir2_data_hdr;
struct xfs_dir2_data_entry;
struct xfs_dir2_data_unused;
struct xfs_dir3_icfree_hdr;
struct xfs_dir3_icleaf_hdr;
extern struct xfs_name xfs_name_dotdot;

19
fs/xfs/libxfs/xfs_dir2_priv.h
View file

@ -8,6 +8,25 @@
struct dir_context;
/*
* In-core version of the leaf and free block headers to abstract the
* differences in the v2 and v3 disk format of the headers.
*/
struct xfs_dir3_icleaf_hdr {
uint32_t forw;
uint32_t back;
uint16_t magic;
uint16_t count;
uint16_t stale;
};
struct xfs_dir3_icfree_hdr {
uint32_t magic;
uint32_t firstdb;
uint32_t nvalid;
uint32_t nused;
};
/* xfs_dir2.c */
extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
xfs_dir2_db_t *dbp);