From 48c03c4bcfd7a1fcb1e05e9b1db1188cdbecf49a Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 6 Sep 2012 04:03:56 -0600 Subject: [PATCH] Btrfs: fix wrong size for the reservation of the, snapshot creation We should insert/update 6 items(root ref, root backref, dir item, dir index, root item and parent inode) when creating a snapshot, not 5 items, fix it. Signed-off-by: Miao Xie --- fs/btrfs/extent-tree.c | 6 +++--- fs/btrfs/ioctl.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 36e03312267a..b6b33e463ac3 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4414,10 +4414,10 @@ int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, struct btrfs_block_rsv *src_rsv = get_block_rsv(trans, root); struct btrfs_block_rsv *dst_rsv = &pending->block_rsv; /* - * two for root back/forward refs, two for directory entries - * and one for root of the snapshot. + * two for root back/forward refs, two for directory entries, + * one for root of the snapshot and one for parent inode. */ - u64 num_bytes = btrfs_calc_trans_metadata_size(root, 5); + u64 num_bytes = btrfs_calc_trans_metadata_size(root, 6); dst_rsv->space_info = src_rsv->space_info; return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes); } diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e6934de55a8b..c56daa368768 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -526,7 +526,7 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry, *inherit = NULL; /* take responsibility to free it */ } - trans = btrfs_start_transaction(root->fs_info->extent_root, 5); + trans = btrfs_start_transaction(root->fs_info->extent_root, 6); if (IS_ERR(trans)) { ret = PTR_ERR(trans); goto fail; -- 2.20.1