mirror of https://gitee.com/openkylin/linux.git
btrfs: migrate the global_block_rsv helpers to block-rsv.c
These helpers belong in block-rsv.c Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
David Sterba
parent
550fa228ee
commit
67f9c2209e
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@ -4,6 +4,7 @@
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#include "block-rsv.h"
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#include "space-info.h"
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#include "math.h"
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#include "transaction.h"
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static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
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struct btrfs_block_rsv *block_rsv,
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@ -251,3 +252,174 @@ int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
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btrfs_block_rsv_add_bytes(dest, num_bytes, true);
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return 0;
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}
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void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
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{
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struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
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struct btrfs_space_info *sinfo = block_rsv->space_info;
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u64 num_bytes;
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/*
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* The global block rsv is based on the size of the extent tree, the
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* checksum tree and the root tree. If the fs is empty we want to set
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* it to a minimal amount for safety.
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*/
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num_bytes = btrfs_root_used(&fs_info->extent_root->root_item) +
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btrfs_root_used(&fs_info->csum_root->root_item) +
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btrfs_root_used(&fs_info->tree_root->root_item);
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num_bytes = max_t(u64, num_bytes, SZ_16M);
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spin_lock(&sinfo->lock);
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spin_lock(&block_rsv->lock);
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block_rsv->size = min_t(u64, num_bytes, SZ_512M);
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if (block_rsv->reserved < block_rsv->size) {
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num_bytes = btrfs_space_info_used(sinfo, true);
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if (sinfo->total_bytes > num_bytes) {
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num_bytes = sinfo->total_bytes - num_bytes;
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num_bytes = min(num_bytes,
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block_rsv->size - block_rsv->reserved);
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block_rsv->reserved += num_bytes;
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btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
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num_bytes);
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trace_btrfs_space_reservation(fs_info, "space_info",
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sinfo->flags, num_bytes,
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1);
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}
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} else if (block_rsv->reserved > block_rsv->size) {
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num_bytes = block_rsv->reserved - block_rsv->size;
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btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
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-num_bytes);
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trace_btrfs_space_reservation(fs_info, "space_info",
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sinfo->flags, num_bytes, 0);
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block_rsv->reserved = block_rsv->size;
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}
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if (block_rsv->reserved == block_rsv->size)
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block_rsv->full = 1;
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else
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block_rsv->full = 0;
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spin_unlock(&block_rsv->lock);
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spin_unlock(&sinfo->lock);
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}
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void btrfs_init_global_block_rsv(struct btrfs_fs_info *fs_info)
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{
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struct btrfs_space_info *space_info;
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space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
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fs_info->chunk_block_rsv.space_info = space_info;
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space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
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fs_info->global_block_rsv.space_info = space_info;
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fs_info->trans_block_rsv.space_info = space_info;
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fs_info->empty_block_rsv.space_info = space_info;
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fs_info->delayed_block_rsv.space_info = space_info;
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fs_info->delayed_refs_rsv.space_info = space_info;
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fs_info->extent_root->block_rsv = &fs_info->delayed_refs_rsv;
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fs_info->csum_root->block_rsv = &fs_info->delayed_refs_rsv;
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fs_info->dev_root->block_rsv = &fs_info->global_block_rsv;
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fs_info->tree_root->block_rsv = &fs_info->global_block_rsv;
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if (fs_info->quota_root)
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fs_info->quota_root->block_rsv = &fs_info->global_block_rsv;
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fs_info->chunk_root->block_rsv = &fs_info->chunk_block_rsv;
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btrfs_update_global_block_rsv(fs_info);
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}
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void btrfs_release_global_block_rsv(struct btrfs_fs_info *fs_info)
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{
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btrfs_block_rsv_release(fs_info, &fs_info->global_block_rsv, (u64)-1);
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WARN_ON(fs_info->trans_block_rsv.size > 0);
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WARN_ON(fs_info->trans_block_rsv.reserved > 0);
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WARN_ON(fs_info->chunk_block_rsv.size > 0);
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WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
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WARN_ON(fs_info->delayed_block_rsv.size > 0);
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WARN_ON(fs_info->delayed_block_rsv.reserved > 0);
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WARN_ON(fs_info->delayed_refs_rsv.reserved > 0);
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WARN_ON(fs_info->delayed_refs_rsv.size > 0);
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}
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static struct btrfs_block_rsv *get_block_rsv(
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const struct btrfs_trans_handle *trans,
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const struct btrfs_root *root)
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{
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struct btrfs_fs_info *fs_info = root->fs_info;
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struct btrfs_block_rsv *block_rsv = NULL;
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if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||
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(root == fs_info->csum_root && trans->adding_csums) ||
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(root == fs_info->uuid_root))
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block_rsv = trans->block_rsv;
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if (!block_rsv)
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block_rsv = root->block_rsv;
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if (!block_rsv)
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block_rsv = &fs_info->empty_block_rsv;
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return block_rsv;
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}
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struct btrfs_block_rsv *btrfs_use_block_rsv(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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u32 blocksize)
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{
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struct btrfs_fs_info *fs_info = root->fs_info;
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struct btrfs_block_rsv *block_rsv;
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struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
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int ret;
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bool global_updated = false;
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block_rsv = get_block_rsv(trans, root);
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if (unlikely(block_rsv->size == 0))
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goto try_reserve;
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again:
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ret = btrfs_block_rsv_use_bytes(block_rsv, blocksize);
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if (!ret)
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return block_rsv;
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if (block_rsv->failfast)
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return ERR_PTR(ret);
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if (block_rsv->type == BTRFS_BLOCK_RSV_GLOBAL && !global_updated) {
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global_updated = true;
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btrfs_update_global_block_rsv(fs_info);
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goto again;
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}
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/*
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* The global reserve still exists to save us from ourselves, so don't
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* warn_on if we are short on our delayed refs reserve.
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*/
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if (block_rsv->type != BTRFS_BLOCK_RSV_DELREFS &&
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btrfs_test_opt(fs_info, ENOSPC_DEBUG)) {
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static DEFINE_RATELIMIT_STATE(_rs,
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DEFAULT_RATELIMIT_INTERVAL * 10,
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/*DEFAULT_RATELIMIT_BURST*/ 1);
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if (__ratelimit(&_rs))
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WARN(1, KERN_DEBUG
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"BTRFS: block rsv returned %d\n", ret);
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}
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try_reserve:
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ret = btrfs_reserve_metadata_bytes(root, block_rsv, blocksize,
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BTRFS_RESERVE_NO_FLUSH);
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if (!ret)
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return block_rsv;
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/*
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* If we couldn't reserve metadata bytes try and use some from
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* the global reserve if its space type is the same as the global
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* reservation.
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*/
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if (block_rsv->type != BTRFS_BLOCK_RSV_GLOBAL &&
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block_rsv->space_info == global_rsv->space_info) {
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ret = btrfs_block_rsv_use_bytes(global_rsv, blocksize);
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if (!ret)
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return global_rsv;
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}
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return ERR_PTR(ret);
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}
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@ -3,6 +3,7 @@
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#ifndef BTRFS_BLOCK_RSV_H
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#define BTRFS_BLOCK_RSV_H
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struct btrfs_trans_handle;
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enum btrfs_reserve_flush_enum;
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/*
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@ -75,6 +76,12 @@ void btrfs_block_rsv_add_bytes(struct btrfs_block_rsv *block_rsv,
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u64 __btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
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struct btrfs_block_rsv *block_rsv,
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u64 num_bytes, u64 *qgroup_to_release);
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void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info);
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void btrfs_init_global_block_rsv(struct btrfs_fs_info *fs_info);
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void btrfs_release_global_block_rsv(struct btrfs_fs_info *fs_info);
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struct btrfs_block_rsv *btrfs_use_block_rsv(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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u32 blocksize);
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static inline void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
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struct btrfs_block_rsv *block_rsv,
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@ -83,4 +90,12 @@ static inline void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
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__btrfs_block_rsv_release(fs_info, block_rsv, num_bytes, NULL);
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}
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static inline void btrfs_unuse_block_rsv(struct btrfs_fs_info *fs_info,
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struct btrfs_block_rsv *block_rsv,
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u32 blocksize)
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{
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btrfs_block_rsv_add_bytes(block_rsv, blocksize, false);
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btrfs_block_rsv_release(fs_info, block_rsv, 0);
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}
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#endif /* BTRFS_BLOCK_RSV_H */
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@ -4347,27 +4347,6 @@ int btrfs_chunk_alloc(struct btrfs_trans_handle *trans, u64 flags,
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return ret;
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}
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static struct btrfs_block_rsv *get_block_rsv(
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const struct btrfs_trans_handle *trans,
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const struct btrfs_root *root)
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{
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struct btrfs_fs_info *fs_info = root->fs_info;
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struct btrfs_block_rsv *block_rsv = NULL;
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if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||
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(root == fs_info->csum_root && trans->adding_csums) ||
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(root == fs_info->uuid_root))
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block_rsv = trans->block_rsv;
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if (!block_rsv)
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block_rsv = root->block_rsv;
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if (!block_rsv)
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block_rsv = &fs_info->empty_block_rsv;
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return block_rsv;
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}
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/**
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* btrfs_migrate_to_delayed_refs_rsv - transfer bytes to our delayed refs rsv.
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* @fs_info - the fs info for our fs.
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@ -4508,95 +4487,6 @@ void btrfs_delayed_refs_rsv_release(struct btrfs_fs_info *fs_info, int nr)
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0, released, 0);
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}
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static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
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{
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struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
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struct btrfs_space_info *sinfo = block_rsv->space_info;
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u64 num_bytes;
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/*
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* The global block rsv is based on the size of the extent tree, the
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* checksum tree and the root tree. If the fs is empty we want to set
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* it to a minimal amount for safety.
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*/
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num_bytes = btrfs_root_used(&fs_info->extent_root->root_item) +
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btrfs_root_used(&fs_info->csum_root->root_item) +
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btrfs_root_used(&fs_info->tree_root->root_item);
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num_bytes = max_t(u64, num_bytes, SZ_16M);
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spin_lock(&sinfo->lock);
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spin_lock(&block_rsv->lock);
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block_rsv->size = min_t(u64, num_bytes, SZ_512M);
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if (block_rsv->reserved < block_rsv->size) {
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num_bytes = btrfs_space_info_used(sinfo, true);
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if (sinfo->total_bytes > num_bytes) {
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num_bytes = sinfo->total_bytes - num_bytes;
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num_bytes = min(num_bytes,
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block_rsv->size - block_rsv->reserved);
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block_rsv->reserved += num_bytes;
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btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
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num_bytes);
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trace_btrfs_space_reservation(fs_info, "space_info",
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sinfo->flags, num_bytes,
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1);
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}
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} else if (block_rsv->reserved > block_rsv->size) {
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num_bytes = block_rsv->reserved - block_rsv->size;
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btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
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-num_bytes);
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trace_btrfs_space_reservation(fs_info, "space_info",
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sinfo->flags, num_bytes, 0);
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block_rsv->reserved = block_rsv->size;
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}
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if (block_rsv->reserved == block_rsv->size)
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block_rsv->full = 1;
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else
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block_rsv->full = 0;
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spin_unlock(&block_rsv->lock);
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spin_unlock(&sinfo->lock);
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}
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static void init_global_block_rsv(struct btrfs_fs_info *fs_info)
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{
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struct btrfs_space_info *space_info;
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space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
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fs_info->chunk_block_rsv.space_info = space_info;
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space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
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fs_info->global_block_rsv.space_info = space_info;
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fs_info->trans_block_rsv.space_info = space_info;
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fs_info->empty_block_rsv.space_info = space_info;
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fs_info->delayed_block_rsv.space_info = space_info;
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fs_info->delayed_refs_rsv.space_info = space_info;
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fs_info->extent_root->block_rsv = &fs_info->delayed_refs_rsv;
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fs_info->csum_root->block_rsv = &fs_info->delayed_refs_rsv;
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fs_info->dev_root->block_rsv = &fs_info->global_block_rsv;
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fs_info->tree_root->block_rsv = &fs_info->global_block_rsv;
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if (fs_info->quota_root)
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fs_info->quota_root->block_rsv = &fs_info->global_block_rsv;
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fs_info->chunk_root->block_rsv = &fs_info->chunk_block_rsv;
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update_global_block_rsv(fs_info);
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}
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static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
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{
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btrfs_block_rsv_release(fs_info, &fs_info->global_block_rsv, (u64)-1);
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WARN_ON(fs_info->trans_block_rsv.size > 0);
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WARN_ON(fs_info->trans_block_rsv.reserved > 0);
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WARN_ON(fs_info->chunk_block_rsv.size > 0);
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WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
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WARN_ON(fs_info->delayed_block_rsv.size > 0);
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WARN_ON(fs_info->delayed_block_rsv.reserved > 0);
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WARN_ON(fs_info->delayed_refs_rsv.reserved > 0);
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WARN_ON(fs_info->delayed_refs_rsv.size > 0);
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}
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/*
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* btrfs_update_delayed_refs_rsv - adjust the size of the delayed refs rsv
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@ -5360,7 +5250,7 @@ void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info)
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up_write(&fs_info->commit_root_sem);
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update_global_block_rsv(fs_info);
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btrfs_update_global_block_rsv(fs_info);
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}
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/*
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@ -7117,73 +7007,6 @@ btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
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return buf;
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}
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static struct btrfs_block_rsv *
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use_block_rsv(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u32 blocksize)
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{
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struct btrfs_fs_info *fs_info = root->fs_info;
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struct btrfs_block_rsv *block_rsv;
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struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
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int ret;
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bool global_updated = false;
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block_rsv = get_block_rsv(trans, root);
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if (unlikely(block_rsv->size == 0))
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goto try_reserve;
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again:
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ret = btrfs_block_rsv_use_bytes(block_rsv, blocksize);
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if (!ret)
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return block_rsv;
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if (block_rsv->failfast)
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return ERR_PTR(ret);
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if (block_rsv->type == BTRFS_BLOCK_RSV_GLOBAL && !global_updated) {
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global_updated = true;
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update_global_block_rsv(fs_info);
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goto again;
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}
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/*
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* The global reserve still exists to save us from ourselves, so don't
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* warn_on if we are short on our delayed refs reserve.
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*/
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if (block_rsv->type != BTRFS_BLOCK_RSV_DELREFS &&
|
||||
btrfs_test_opt(fs_info, ENOSPC_DEBUG)) {
|
||||
static DEFINE_RATELIMIT_STATE(_rs,
|
||||
DEFAULT_RATELIMIT_INTERVAL * 10,
|
||||
/*DEFAULT_RATELIMIT_BURST*/ 1);
|
||||
if (__ratelimit(&_rs))
|
||||
WARN(1, KERN_DEBUG
|
||||
"BTRFS: block rsv returned %d\n", ret);
|
||||
}
|
||||
try_reserve:
|
||||
ret = btrfs_reserve_metadata_bytes(root, block_rsv, blocksize,
|
||||
BTRFS_RESERVE_NO_FLUSH);
|
||||
if (!ret)
|
||||
return block_rsv;
|
||||
/*
|
||||
* If we couldn't reserve metadata bytes try and use some from
|
||||
* the global reserve if its space type is the same as the global
|
||||
* reservation.
|
||||
*/
|
||||
if (block_rsv->type != BTRFS_BLOCK_RSV_GLOBAL &&
|
||||
block_rsv->space_info == global_rsv->space_info) {
|
||||
ret = btrfs_block_rsv_use_bytes(global_rsv, blocksize);
|
||||
if (!ret)
|
||||
return global_rsv;
|
||||
}
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static void unuse_block_rsv(struct btrfs_fs_info *fs_info,
|
||||
struct btrfs_block_rsv *block_rsv, u32 blocksize)
|
||||
{
|
||||
btrfs_block_rsv_add_bytes(block_rsv, blocksize, false);
|
||||
btrfs_block_rsv_release(fs_info, block_rsv, 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* finds a free extent and does all the dirty work required for allocation
|
||||
* returns the tree buffer or an ERR_PTR on error.
|
||||
|
|
@ -7216,7 +7039,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
|
|||
}
|
||||
#endif
|
||||
|
||||
block_rsv = use_block_rsv(trans, root, blocksize);
|
||||
block_rsv = btrfs_use_block_rsv(trans, root, blocksize);
|
||||
if (IS_ERR(block_rsv))
|
||||
return ERR_CAST(block_rsv);
|
||||
|
||||
|
|
@ -7274,7 +7097,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
|
|||
out_free_reserved:
|
||||
btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 0);
|
||||
out_unuse:
|
||||
unuse_block_rsv(fs_info, block_rsv, blocksize);
|
||||
btrfs_unuse_block_rsv(fs_info, block_rsv, blocksize);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
|
|
@ -8761,7 +8584,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
|
|||
*/
|
||||
synchronize_rcu();
|
||||
|
||||
release_global_block_rsv(info);
|
||||
btrfs_release_global_block_rsv(info);
|
||||
|
||||
while (!list_empty(&info->space_info)) {
|
||||
int i;
|
||||
|
|
@ -9113,7 +8936,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
|
|||
}
|
||||
|
||||
btrfs_add_raid_kobjects(info);
|
||||
init_global_block_rsv(info);
|
||||
btrfs_init_global_block_rsv(info);
|
||||
ret = check_chunk_block_group_mappings(info);
|
||||
error:
|
||||
btrfs_free_path(path);
|
||||
|
|
@ -9227,7 +9050,7 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, u64 bytes_used,
|
|||
trace_btrfs_add_block_group(fs_info, cache, 1);
|
||||
btrfs_update_space_info(fs_info, cache->flags, size, bytes_used,
|
||||
cache->bytes_super, &cache->space_info);
|
||||
update_global_block_rsv(fs_info);
|
||||
btrfs_update_global_block_rsv(fs_info);
|
||||
|
||||
link_block_group(cache);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue