diff options
author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2023-09-14 19:06:59 +0300 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2023-10-12 17:44:09 +0300 |
commit | ca41504efda646d9c4b00c37be52f5ba07cebebf (patch) | |
tree | 2834c9b5cd6440c25cc5b8508371e8c8998c2158 /fs/btrfs/raid-stripe-tree.c | |
parent | 02c372e1f016e5113217597ab37b399c4e407477 (diff) | |
download | linux-ca41504efda646d9c4b00c37be52f5ba07cebebf.tar.xz |
btrfs: delete stripe extent on extent deletion
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>
Diffstat (limited to 'fs/btrfs/raid-stripe-tree.c')
-rw-r--r-- | fs/btrfs/raid-stripe-tree.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/fs/btrfs/raid-stripe-tree.c b/fs/btrfs/raid-stripe-tree.c index c093e0bbb7be..f2e052dfb0a5 100644 --- a/fs/btrfs/raid-stripe-tree.c +++ b/fs/btrfs/raid-stripe-tree.c @@ -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) { |