diff options
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 41 |
1 files changed, 27 insertions, 14 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index eb4fe56..a5f1421 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3422,7 +3422,6 @@ static int shrink_delalloc(struct btrfs_trans_handle *trans, * @block_rsv - the block_rsv we're allocating for * @orig_bytes - the number of bytes we want * @flush - wether or not we can flush to make our reservation - * @check - wether this is just to check if we have enough space or not * * This will reserve orgi_bytes number of bytes from the space info associated * with the block_rsv. If there is not enough space it will make an attempt to @@ -3433,7 +3432,7 @@ static int shrink_delalloc(struct btrfs_trans_handle *trans, */ static int reserve_metadata_bytes(struct btrfs_root *root, struct btrfs_block_rsv *block_rsv, - u64 orig_bytes, int flush, int check) + u64 orig_bytes, int flush) { struct btrfs_space_info *space_info = block_rsv->space_info; struct btrfs_trans_handle *trans; @@ -3507,7 +3506,7 @@ again: (orig_bytes * (retries + 1)); } - if (ret && !check) { + if (ret) { u64 profile = btrfs_get_alloc_profile(root, 0); u64 avail; @@ -3742,7 +3741,7 @@ int btrfs_block_rsv_add(struct btrfs_root *root, if (num_bytes == 0) return 0; - ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 1, 0); + ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 1); if (!ret) { block_rsv_add_bytes(block_rsv, num_bytes, 1); return 0; @@ -3752,8 +3751,7 @@ int btrfs_block_rsv_add(struct btrfs_root *root, } int btrfs_block_rsv_check(struct btrfs_root *root, - struct btrfs_block_rsv *block_rsv, - u64 min_reserved, int min_factor, int flush) + struct btrfs_block_rsv *block_rsv, int min_factor) { u64 num_bytes = 0; int ret = -ENOSPC; @@ -3762,11 +3760,26 @@ int btrfs_block_rsv_check(struct btrfs_root *root, return 0; spin_lock(&block_rsv->lock); - if (min_factor > 0) - num_bytes = div_factor(block_rsv->size, min_factor); - if (min_reserved > num_bytes) - num_bytes = min_reserved; + num_bytes = div_factor(block_rsv->size, min_factor); + if (block_rsv->reserved >= num_bytes) + ret = 0; + spin_unlock(&block_rsv->lock); + return ret; +} + +int btrfs_block_rsv_refill(struct btrfs_root *root, + struct btrfs_block_rsv *block_rsv, + u64 min_reserved) +{ + u64 num_bytes = 0; + int ret = -ENOSPC; + + if (!block_rsv) + return 0; + + spin_lock(&block_rsv->lock); + num_bytes = min_reserved; if (block_rsv->reserved >= num_bytes) ret = 0; else @@ -3776,7 +3789,7 @@ int btrfs_block_rsv_check(struct btrfs_root *root, if (!ret) return 0; - ret = reserve_metadata_bytes(root, block_rsv, num_bytes, flush, !flush); + ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 1); if (!ret) { block_rsv_add_bytes(block_rsv, num_bytes, 0); return 0; @@ -4073,7 +4086,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes) to_reserve += calc_csum_metadata_size(inode, num_bytes, 1); spin_unlock(&BTRFS_I(inode)->lock); - ret = reserve_metadata_bytes(root, block_rsv, to_reserve, flush, 0); + ret = reserve_metadata_bytes(root, block_rsv, to_reserve, flush); if (ret) { u64 to_free = 0; unsigned dropped; @@ -5728,7 +5741,7 @@ use_block_rsv(struct btrfs_trans_handle *trans, block_rsv = get_block_rsv(trans, root); if (block_rsv->size == 0) { - ret = reserve_metadata_bytes(root, block_rsv, blocksize, 0, 0); + ret = reserve_metadata_bytes(root, block_rsv, blocksize, 0); /* * If we couldn't reserve metadata bytes try and use some from * the global reserve. @@ -5749,7 +5762,7 @@ use_block_rsv(struct btrfs_trans_handle *trans, return block_rsv; if (ret) { WARN_ON(1); - ret = reserve_metadata_bytes(root, block_rsv, blocksize, 0, 0); + ret = reserve_metadata_bytes(root, block_rsv, blocksize, 0); if (!ret) { return block_rsv; } else if (ret && block_rsv != global_rsv) { |