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btrfs: zoned: enable relocation on a zoned filesystem

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Currently fallocate() is disabled on a zoned filesystem. Since current
relocation process relies on preallocation to move file data extents, it
must be handled differently.

On a zoned filesystem, we just truncate the inode to the size that we
wanted to pre-allocate. Then, we flush dirty pages on the file before
finishing the relocation process. run_delalloc_zoned() will handle all
the allocations and submit IOs to the underlying layers.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2021-02-04 19:22:15 +09:00 committed by David Sterba
parent 7db1c5d14d
commit 32430c6148
1 changed files with 32 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

34
fs/btrfs/relocation.c
View file

@ -2553,6 +2553,31 @@ static noinline_for_stack int prealloc_file_extent_cluster(
if (ret)
return ret;
/*
* On a zoned filesystem, we cannot preallocate the file region.
* Instead, we dirty and fiemap_write the region.
*/
if (btrfs_is_zoned(inode->root->fs_info)) {
struct btrfs_root *root = inode->root;
struct btrfs_trans_handle *trans;
end = cluster->end - offset + 1;
trans = btrfs_start_transaction(root, 1);
if (IS_ERR(trans))
return PTR_ERR(trans);
inode->vfs_inode.i_ctime = current_time(&inode->vfs_inode);
i_size_write(&inode->vfs_inode, end);
ret = btrfs_update_inode(trans, root, inode);
if (ret) {
btrfs_abort_transaction(trans, ret);
btrfs_end_transaction(trans);
return ret;
}
return btrfs_end_transaction(trans);
}
inode_lock(&inode->vfs_inode);
for (nr = 0; nr < cluster->nr; nr++) {
start = cluster->boundary[nr] - offset;
@ -2756,6 +2781,8 @@ static int relocate_file_extent_cluster(struct inode *inode,
}
}
WARN_ON(nr != cluster->nr);
if (btrfs_is_zoned(fs_info) && !ret)
ret = btrfs_wait_ordered_range(inode, 0, (u64)-1);
out:
kfree(ra);
return ret;
@ -3434,8 +3461,12 @@ static int __insert_orphan_inode(struct btrfs_trans_handle *trans,
struct btrfs_path *path;
struct btrfs_inode_item *item;
struct extent_buffer *leaf;
u64 flags = BTRFS_INODE_NOCOMPRESS | BTRFS_INODE_PREALLOC;
int ret;
if (btrfs_is_zoned(trans->fs_info))
flags &= ~BTRFS_INODE_PREALLOC;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@ -3450,8 +3481,7 @@ static int __insert_orphan_inode(struct btrfs_trans_handle *trans,
btrfs_set_inode_generation(leaf, item, 1);
btrfs_set_inode_size(leaf, item, 0);
btrfs_set_inode_mode(leaf, item, S_IFREG | 0600);
btrfs_set_inode_flags(leaf, item, BTRFS_INODE_NOCOMPRESS |
BTRFS_INODE_PREALLOC);
btrfs_set_inode_flags(leaf, item, flags);
btrfs_mark_buffer_dirty(leaf);
out:
btrfs_free_path(path);