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authorChristoph Hellwig <hch@infradead.org>2008-10-30 08:55:34 +0300
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 08:55:34 +0300
commit65f1eaeac0efc968797f3ac955b85ba3f5d4f9c8 (patch)
tree149c010e3a1d4abb60021ed39d3972459f63d13d /fs/xfs/xfs_ialloc.c
parentce5e42db421a41b1ad0cfd68c6058566b963e14b (diff)
downloadlinux-65f1eaeac0efc968797f3ac955b85ba3f5d4f9c8.tar.xz
[XFS] add helpers for addressing entities inside a btree block
Add new helpers in xfs_btree.c to find the record, key and block pointer entries inside a btree block. To implement this genericly the ->get_maxrecs methods and two new xfs_btree_ops entries for the key and record sizes are used. Also add a big comment describing how the addressing inside a btree block works. Note that these helpers are unused until users are introduced in the next patches and this patch will thus cause some harmless compiler warnings. SGI-PV: 985583 SGI-Modid: xfs-linux-melb:xfs-kern:32189a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Bill O'Donnell <billodo@sgi.com> Signed-off-by: David Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_ialloc.c')
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