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Btrfs: Use last_alloc optimizations for metadata, even without -o ssd 

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-02-01 14:51:59 -05:00
parent 21a4989d26
commit 60cde612c8
1 changed files with 13 additions and 15 deletions
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28
fs/btrfs/extent-tree.c
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@ -1431,19 +1431,19 @@ static int noinline find_free_extent(struct btrfs_trans_handle *trans,
data = BTRFS_BLOCK_GROUP_MIXED;
}
/* for SSD, cluster allocations together as much as possible */
if (btrfs_test_opt(root, SSD)) {
if (data)
last_ptr = &root->fs_info->last_data_alloc;
else
last_ptr = &root->fs_info->last_alloc;
if (*last_ptr) {
if (!data)
last_ptr = &root->fs_info->last_alloc;
if (data && btrfs_test_opt(root, SSD))
last_ptr = &root->fs_info->last_data_alloc;
if (last_ptr) {
if (*last_ptr)
hint_byte = *last_ptr;
}
else {
hint_byte = hint_byte &
~((u64)BTRFS_BLOCK_GROUP_SIZE - 1);
empty_size += 16 * 1024 * 1024;
empty_size += 2 * 1024 * 1024;
}
}
@ -1473,9 +1473,8 @@ check_failed:
search_start = find_search_start(root, &block_group, search_start,
total_needed, data);
if (btrfs_test_opt(root, SSD) && *last_ptr &&
search_start != *last_ptr) {
info->last_alloc = 0;
if (last_ptr && *last_ptr && search_start != *last_ptr) {
*last_ptr = 0;
if (!empty_size) {
empty_size += 16 * 1024 * 1024;
total_needed += empty_size;
@ -1612,7 +1611,7 @@ check_pending:
}
ins->offset = num_bytes;
btrfs_free_path(path);
if (btrfs_test_opt(root, SSD))
if (last_ptr)
*last_ptr = ins->objectid + ins->offset;
return 0;
@ -1827,8 +1826,7 @@ struct extent_buffer *__btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
buf->start, buf->start + buf->len - 1,
EXTENT_CSUM, GFP_NOFS);
buf->flags |= EXTENT_CSUM;
if (!btrfs_test_opt(root, SSD))
btrfs_set_buffer_defrag(buf);
btrfs_set_buffer_defrag(buf);
trans->blocks_used++;
return buf;
}