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xfs: remove struct xfs_dabuf and infrastructure

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The struct xfs_dabuf now only tracks a single xfs_buf and all the
information it holds can be gained directly from the xfs_buf. Hence
we can remove the struct dabuf and pass the xfs_buf around
everywhere.

Kill the struct dabuf and the associated infrastructure.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner 2012-06-22 18:50:14 +10:00 • committed by Ben Myers
parent 3605431fb9
commit 1d9025e561
13 changed files with 602 additions and 779 deletions
Download patch file Download diff file Expand all files Collapse all files

50
fs/xfs/xfs_dir2_data.c
View file

@ -42,8 +42,8 @@ xfs_dir2_data_freefind(xfs_dir2_data_hdr_t *hdr, xfs_dir2_data_unused_t *dup);
*/
void
xfs_dir2_data_check(
xfs_inode_t *dp, /* incore inode pointer */
xfs_dabuf_t *bp) /* data block's buffer */
struct xfs_inode *dp, /* incore inode pointer */
struct xfs_buf *bp) /* data block's buffer */
{
xfs_dir2_dataptr_t addr; /* addr for leaf lookup */
xfs_dir2_data_free_t *bf; /* bestfree table */
@ -65,7 +65,7 @@ xfs_dir2_data_check(
struct xfs_name name;
mp = dp->i_mount;
hdr = bp->data;
hdr = bp->b_addr;
bf = hdr->bestfree;
p = (char *)(hdr + 1);
@ -389,9 +389,9 @@ int /* error */
xfs_dir2_data_init(
xfs_da_args_t *args, /* directory operation args */
xfs_dir2_db_t blkno, /* logical dir block number */
xfs_dabuf_t **bpp) /* output block buffer */
struct xfs_buf **bpp) /* output block buffer */
{
xfs_dabuf_t *bp; /* block buffer */
struct xfs_buf *bp; /* block buffer */
xfs_dir2_data_hdr_t *hdr; /* data block header */
xfs_inode_t *dp; /* incore directory inode */
xfs_dir2_data_unused_t *dup; /* unused entry pointer */
@ -417,7 +417,7 @@ xfs_dir2_data_init(
/*
* Initialize the header.
*/
hdr = bp->data;
hdr = bp->b_addr;
hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC);
hdr->bestfree[0].offset = cpu_to_be16(sizeof(*hdr));
for (i = 1; i < XFS_DIR2_DATA_FD_COUNT; i++) {
@ -449,16 +449,16 @@ xfs_dir2_data_init(
*/
void
xfs_dir2_data_log_entry(
xfs_trans_t *tp, /* transaction pointer */
xfs_dabuf_t *bp, /* block buffer */
struct xfs_trans *tp,
struct xfs_buf *bp,
xfs_dir2_data_entry_t *dep) /* data entry pointer */
{
xfs_dir2_data_hdr_t *hdr = bp->data;
xfs_dir2_data_hdr_t *hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC));
xfs_da_log_buf(tp, bp, (uint)((char *)dep - (char *)hdr),
xfs_trans_log_buf(tp, bp, (uint)((char *)dep - (char *)hdr),
(uint)((char *)(xfs_dir2_data_entry_tag_p(dep) + 1) -
(char *)hdr - 1));
}
@ -468,15 +468,15 @@ xfs_dir2_data_log_entry(
*/
void
xfs_dir2_data_log_header(
xfs_trans_t *tp, /* transaction pointer */
xfs_dabuf_t *bp) /* block buffer */
struct xfs_trans *tp,
struct xfs_buf *bp)
{
xfs_dir2_data_hdr_t *hdr = bp->data;
xfs_dir2_data_hdr_t *hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC));
xfs_da_log_buf(tp, bp, 0, sizeof(*hdr) - 1);
xfs_trans_log_buf(tp, bp, 0, sizeof(*hdr) - 1);
}
/*
@ -484,11 +484,11 @@ xfs_dir2_data_log_header(
*/
void
xfs_dir2_data_log_unused(
xfs_trans_t *tp, /* transaction pointer */
xfs_dabuf_t *bp, /* block buffer */
struct xfs_trans *tp,
struct xfs_buf *bp,
xfs_dir2_data_unused_t *dup) /* data unused pointer */
{
xfs_dir2_data_hdr_t *hdr = bp->data;
xfs_dir2_data_hdr_t *hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC));
@ -496,13 +496,13 @@ xfs_dir2_data_log_unused(
/*
* Log the first part of the unused entry.
*/
xfs_da_log_buf(tp, bp, (uint)((char *)dup - (char *)hdr),
xfs_trans_log_buf(tp, bp, (uint)((char *)dup - (char *)hdr),
(uint)((char *)&dup->length + sizeof(dup->length) -
1 - (char *)hdr));
/*
* Log the end (tag) of the unused entry.
*/
xfs_da_log_buf(tp, bp,
xfs_trans_log_buf(tp, bp,
(uint)((char *)xfs_dir2_data_unused_tag_p(dup) - (char *)hdr),
(uint)((char *)xfs_dir2_data_unused_tag_p(dup) - (char *)hdr +
sizeof(xfs_dir2_data_off_t) - 1));
@ -514,8 +514,8 @@ xfs_dir2_data_log_unused(
*/
void
xfs_dir2_data_make_free(
xfs_trans_t *tp, /* transaction pointer */
xfs_dabuf_t *bp, /* block buffer */
struct xfs_trans *tp,
struct xfs_buf *bp,
xfs_dir2_data_aoff_t offset, /* starting byte offset */
xfs_dir2_data_aoff_t len, /* length in bytes */
int *needlogp, /* out: log header */
@ -531,7 +531,7 @@ xfs_dir2_data_make_free(
xfs_dir2_data_unused_t *prevdup; /* unused entry before us */
mp = tp->t_mountp;
hdr = bp->data;
hdr = bp->b_addr;
/*
* Figure out where the end of the data area is.
@ -696,8 +696,8 @@ xfs_dir2_data_make_free(
*/
void
xfs_dir2_data_use_free(
xfs_trans_t *tp, /* transaction pointer */
xfs_dabuf_t *bp, /* data block buffer */
struct xfs_trans *tp,
struct xfs_buf *bp,
xfs_dir2_data_unused_t *dup, /* unused entry */
xfs_dir2_data_aoff_t offset, /* starting offset to use */
xfs_dir2_data_aoff_t len, /* length to use */
@ -713,7 +713,7 @@ xfs_dir2_data_use_free(
xfs_dir2_data_unused_t *newdup2; /* another new unused entry */
int oldlen; /* old unused entry's length */
hdr = bp->data;
hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC));
ASSERT(be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG);