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authorChristoph Hellwig <hch@infradead.org>2008-10-30 16:56:32 +1100
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 16:56:32 +1100
commit278d0ca14e889c3932a05d1a68675252a12b3466 (patch)
treea228d171d4aded60b27639e30eca1bf58ed7daa6 /fs/xfs/xfs_bmap.c
parent38bb74237d2d94c1aced2ec626d7d0f317e360da (diff)
[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_bmap.c')
-rw-r--r--fs/xfs/xfs_bmap.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 1296b4102e97..7d6c4ace8052 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -430,6 +430,24 @@ xfs_bmbt_lookup_ge(
return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
}
+/*
+* Update the record referred to by cur to the value given
+ * by [off, bno, len, state].
+ * This either works (return 0) or gets an EFSCORRUPTED error.
+ */
+STATIC int
+xfs_bmbt_update(
+ struct xfs_btree_cur *cur,
+ xfs_fileoff_t off,
+ xfs_fsblock_t bno,
+ xfs_filblks_t len,
+ xfs_exntst_t state)
+{
+ union xfs_btree_rec rec;
+
+ xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state);
+ return xfs_btree_update(cur, &rec);
+}
/*
* Called from xfs_bmap_add_attrfork to handle btree format files.