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| author | Christoph Hellwig <hch@infradead.org> | 2008-10-30 16:56:32 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@sgi.com> | 2008-10-30 16:56:32 +1100 |
| commit | 278d0ca14e889c3932a05d1a68675252a12b3466 (patch) | |
| tree | a228d171d4aded60b27639e30eca1bf58ed7daa6 /fs/xfs/xfs_ialloc.c | |
| parent | 38bb74237d2d94c1aced2ec626d7d0f317e360da (diff) | |
| download | op-kernel-dev-278d0ca14e889c3932a05d1a68675252a12b3466.zip op-kernel-dev-278d0ca14e889c3932a05d1a68675252a12b3466.tar.gz | |
[XFS] implement generic xfs_btree_update
From: Dave Chinner <dgc@sgi.com>
The most complicated part here is the lastrec tracking for the alloc
btree. Most logic is in the update_lastrec method which has to do some
hopefully good enough dirty magic to maintain it.
[hch: split out from bigger patch and a rework of the lastrec
logic]
SGI-PV: 985583
SGI-Modid: xfs-linux-melb:xfs-kern:32194a
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')
| -rw-r--r-- | fs/xfs/xfs_ialloc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index bbf537f..138651a 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -172,6 +172,26 @@ xfs_inobt_lookup_le( } /* + * Update the record referred to by cur to the value given + * by [ino, fcnt, free]. + * This either works (return 0) or gets an EFSCORRUPTED error. + */ +STATIC int /* error */ +xfs_inobt_update( + struct xfs_btree_cur *cur, /* btree cursor */ + xfs_agino_t ino, /* starting inode of chunk */ + __int32_t fcnt, /* free inode count */ + xfs_inofree_t free) /* free inode mask */ +{ + union xfs_btree_rec rec; + + rec.inobt.ir_startino = cpu_to_be32(ino); + rec.inobt.ir_freecount = cpu_to_be32(fcnt); + rec.inobt.ir_free = cpu_to_be64(free); + return xfs_btree_update(cur, &rec); +} + +/* * Allocate new inodes in the allocation group specified by agbp. * Return 0 for success, else error code. */ |
