From 278d0ca14e889c3932a05d1a68675252a12b3466 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 30 Oct 2008 16:56:32 +1100 Subject: [XFS] implement generic xfs_btree_update From: Dave Chinner 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 Signed-off-by: Lachlan McIlroy Signed-off-by: Bill O'Donnell Signed-off-by: David Chinner --- fs/xfs/xfs_ialloc.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'fs/xfs/xfs_ialloc.c') diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index bbf537f64c4..138651afd44 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -171,6 +171,26 @@ xfs_inobt_lookup_le( return xfs_btree_lookup(cur, XFS_LOOKUP_LE, stat); } +/* + * 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. -- cgit v1.2.3