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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-08-03 11:02:39 +1000 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-08-03 11:02:39 +1000 |
| commit | e5821e57af54abc36ea299bde6c101a804cfac27 (patch) | |
| tree | 3c5e2137fd2e92fb01b463a6e2b8c6bd46aa1db3 /fs/xfs/libxfs/xfs_alloc_btree.c | |
| parent | 0d309791bdc0a92f1db5dfc171d884a6b8583702 (diff) | |
| download | linux-rt-e5821e57af54abc36ea299bde6c101a804cfac27.tar.gz | |
xfs: during btree split, save new block key & ptr for future insertion
When a btree block has to be split, we pass the new block's ptr from
xfs_btree_split() back to xfs_btree_insert() via a pointer parameter;
however, we pass the block's key through the cursor's record. It is a
little weird to "initialize" a record from a key since the non-key
attributes will have garbage values.
When we go to add support for interval queries, we have to be able to
pass the lowest and highest keys accessible via a pointer. There's no
clean way to pass this back through the cursor's record field.
Therefore, pass the key directly back to xfs_btree_insert() the same
way that we pass the btree_ptr.
As a bonus, we no longer need init_rec_from_key and can drop it from the
codebase.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_alloc_btree.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_alloc_btree.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c index d9b42425291e..5ba2dac5e67c 100644 --- a/fs/xfs/libxfs/xfs_alloc_btree.c +++ b/fs/xfs/libxfs/xfs_alloc_btree.c @@ -212,17 +212,6 @@ xfs_allocbt_init_key_from_rec( } STATIC void -xfs_allocbt_init_rec_from_key( - union xfs_btree_key *key, - union xfs_btree_rec *rec) -{ - ASSERT(key->alloc.ar_startblock != 0); - - rec->alloc.ar_startblock = key->alloc.ar_startblock; - rec->alloc.ar_blockcount = key->alloc.ar_blockcount; -} - -STATIC void xfs_allocbt_init_rec_from_cur( struct xfs_btree_cur *cur, union xfs_btree_rec *rec) @@ -406,7 +395,6 @@ static const struct xfs_btree_ops xfs_allocbt_ops = { .get_minrecs = xfs_allocbt_get_minrecs, .get_maxrecs = xfs_allocbt_get_maxrecs, .init_key_from_rec = xfs_allocbt_init_key_from_rec, - .init_rec_from_key = xfs_allocbt_init_rec_from_key, .init_rec_from_cur = xfs_allocbt_init_rec_from_cur, .init_ptr_from_cur = xfs_allocbt_init_ptr_from_cur, .key_diff = xfs_allocbt_key_diff, |