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[XFS] Always use struct xfs_btree_block instead of short / longform

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structures.

Always use the generic xfs_btree_block type instead of the short / long
structures. Add XFS_BTREE_SBLOCK_LEN / XFS_BTREE_LBLOCK_LEN defines for
the length of a short / long form block. The rationale for this is that we
will grow more btree block header variants to support CRCs and other RAS
information, and always accessing them through the same datatype with
unions for the short / long form pointers makes implementing this much
easier.

SGI-PV: 988146

SGI-Modid: xfs-linux-melb:xfs-kern:32300a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
Christoph Hellwig 2008-10-30 17:14:34 +11:00 • committed by Lachlan McIlroy
parent 136341b41a
commit 7cc95a821d
15 changed files with 165 additions and 187 deletions
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2
fs/xfs/xfs_ialloc_btree.c
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@ -375,7 +375,7 @@ xfs_inobt_maxrecs(
int blocklen,
int leaf)
{
blocklen -= sizeof(struct xfs_btree_sblock);
blocklen -= XFS_INOBT_BLOCK_LEN(mp);
if (leaf)
return blocklen / sizeof(xfs_inobt_rec_t);