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| author | Chris Mason <chris.mason@oracle.com> | 2007-06-19 15:50:51 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-06-19 15:50:51 -0400 |
| commit | 85e55b13e4e318672f669747e5e010d1b707b198 (patch) | |
| tree | f46a2f7f9bc96f183223db10ac46dd9e9a8f8894 /fs/btrfs/extent-tree.c | |
| parent | 63c992fd0b733989d43e9762f48e300d61b5287e (diff) | |
| download | kernel-crypto-85e55b13e4e318672f669747e5e010d1b707b198.tar.gz kernel-crypto-85e55b13e4e318672f669747e5e010d1b707b198.tar.xz kernel-crypto-85e55b13e4e318672f669747e5e010d1b707b198.zip | |
Btrfs: cache the extent tree preallocation
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index e0738c65bc5..47e91184fff 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -741,7 +741,6 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct BUG_ON(ret); } extent_root->fs_info->extent_tree_insert_nr = 0; - extent_root->fs_info->extent_tree_prealloc_nr = 0; return 0; } @@ -951,6 +950,18 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root num_blocks = 1; total_needed = (min(level + 1, BTRFS_MAX_LEVEL) + 2) * 3; } + if (fill_prealloc) { + u64 first; + int nr = info->extent_tree_prealloc_nr; + first = info->extent_tree_prealloc[nr - 1]; + if (info->extent_tree_prealloc_nr >= total_needed && + first >= search_start) { + ins->objectid = info->extent_tree_prealloc[0]; + ins->offset = 1; + return 0; + } + info->extent_tree_prealloc_nr = 0; + } if (search_end == (u64)-1) search_end = btrfs_super_total_blocks(info->disk_super); if (hint_block) { @@ -1107,7 +1118,6 @@ check_pending: if (ins->objectid + num_blocks > first && ins->objectid <= info->extent_tree_prealloc[0]) { search_start = info->extent_tree_prealloc[0] + 1; - WARN_ON(!full_scan); goto new_group; } } |