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btrfs: delete stripe extent on extent deletion

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As each stripe extent is tied to an extent item, delete the stripe extent
once the corresponding extent item is deleted.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2023-09-14 09:06:59 -07:00 committed by David Sterba
parent 02c372e1f0
commit ca41504efd
3 changed files with 64 additions and 0 deletions
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6
fs/btrfs/extent-tree.c
View file

@ -2857,6 +2857,12 @@ static int do_free_extent_accounting(struct btrfs_trans_handle *trans,
btrfs_abort_transaction(trans, ret);
return ret;
}
ret = btrfs_delete_raid_extent(trans, bytenr, num_bytes);
if (ret) {
btrfs_abort_transaction(trans, ret);
return ret;
}
}
ret = add_to_free_space_tree(trans, bytenr, num_bytes);

57
fs/btrfs/raid-stripe-tree.c
View file

@ -14,6 +14,63 @@
#include "misc.h"
#include "print-tree.h"
int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 length)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_root *stripe_root = fs_info->stripe_root;
struct btrfs_path *path;
struct btrfs_key key;
struct extent_buffer *leaf;
u64 found_start;
u64 found_end;
u64 end = start + length;
int slot;
int ret;
if (!stripe_root)
return 0;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
while (1) {
key.objectid = start;
key.type = BTRFS_RAID_STRIPE_KEY;
key.offset = length;
ret = btrfs_search_slot(trans, stripe_root, &key, path, -1, 1);
if (ret < 0)
break;
if (ret > 0) {
ret = 0;
if (path->slots[0] == 0)
break;
path->slots[0]--;
}
leaf = path->nodes[0];
slot = path->slots[0];
btrfs_item_key_to_cpu(leaf, &key, slot);
found_start = key.objectid;
found_end = found_start + key.offset;
/* That stripe ends before we start, we're done. */
if (found_end <= start)
break;
ASSERT(found_start >= start && found_end <= end);
ret = btrfs_del_item(trans, stripe_root, path);
if (ret)
break;
btrfs_release_path(path);
}
btrfs_free_path(path);
return ret;
}
static int btrfs_insert_one_raid_extent(struct btrfs_trans_handle *trans,
struct btrfs_io_context *bioc)
{

1
fs/btrfs/raid-stripe-tree.h
View file

@ -11,6 +11,7 @@ struct btrfs_io_stripe;
struct btrfs_ordered_extent;
struct btrfs_trans_handle;
int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 length);
int btrfs_insert_raid_extent(struct btrfs_trans_handle *trans,
struct btrfs_ordered_extent *ordered_extent);