mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
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
@ -4,6 +4,7 @@
|
||||
#include "block-rsv.h"
|
||||
#include "space-info.h"
|
||||
#include "math.h"
|
||||
#include "transaction.h"
|
||||
|
||||
static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
|
||||
struct btrfs_block_rsv *block_rsv,
|
||||
@ -251,3 +252,174 @@ int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
|
||||
btrfs_block_rsv_add_bytes(dest, num_bytes, true);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
{
|
||||
struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
|
||||
struct btrfs_space_info *sinfo = block_rsv->space_info;
|
||||
u64 num_bytes;
|
||||
|
||||
/*
|
||||
* The global block rsv is based on the size of the extent tree, the
|
||||
* checksum tree and the root tree. If the fs is empty we want to set
|
||||
* it to a minimal amount for safety.
|
||||
*/
|
||||
num_bytes = btrfs_root_used(&fs_info->extent_root->root_item) +
|
||||
btrfs_root_used(&fs_info->csum_root->root_item) +
|
||||
btrfs_root_used(&fs_info->tree_root->root_item);
|
||||
num_bytes = max_t(u64, num_bytes, SZ_16M);
|
||||
|
||||
spin_lock(&sinfo->lock);
|
||||
spin_lock(&block_rsv->lock);
|
||||
|
||||
block_rsv->size = min_t(u64, num_bytes, SZ_512M);
|
||||
|
||||
if (block_rsv->reserved < block_rsv->size) {
|
||||
num_bytes = btrfs_space_info_used(sinfo, true);
|
||||
if (sinfo->total_bytes > num_bytes) {
|
||||
num_bytes = sinfo->total_bytes - num_bytes;
|
||||
num_bytes = min(num_bytes,
|
||||
block_rsv->size - block_rsv->reserved);
|
||||
block_rsv->reserved += num_bytes;
|
||||
btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
|
||||
num_bytes);
|
||||
trace_btrfs_space_reservation(fs_info, "space_info",
|
||||
sinfo->flags, num_bytes,
|
||||
1);
|
||||
}
|
||||
} else if (block_rsv->reserved > block_rsv->size) {
|
||||
num_bytes = block_rsv->reserved - block_rsv->size;
|
||||
btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
|
||||
-num_bytes);
|
||||
trace_btrfs_space_reservation(fs_info, "space_info",
|
||||
sinfo->flags, num_bytes, 0);
|
||||
block_rsv->reserved = block_rsv->size;
|
||||
}
|
||||
|
||||
if (block_rsv->reserved == block_rsv->size)
|
||||
block_rsv->full = 1;
|
||||
else
|
||||
block_rsv->full = 0;
|
||||
|
||||
spin_unlock(&block_rsv->lock);
|
||||
spin_unlock(&sinfo->lock);
|
||||
}
|
||||
|
||||
void btrfs_init_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
{
|
||||
struct btrfs_space_info *space_info;
|
||||
|
||||
space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
|
||||
fs_info->chunk_block_rsv.space_info = space_info;
|
||||
|
||||
space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
|
||||
fs_info->global_block_rsv.space_info = space_info;
|
||||
fs_info->trans_block_rsv.space_info = space_info;
|
||||
fs_info->empty_block_rsv.space_info = space_info;
|
||||
fs_info->delayed_block_rsv.space_info = space_info;
|
||||
fs_info->delayed_refs_rsv.space_info = space_info;
|
||||
|
||||
fs_info->extent_root->block_rsv = &fs_info->delayed_refs_rsv;
|
||||
fs_info->csum_root->block_rsv = &fs_info->delayed_refs_rsv;
|
||||
fs_info->dev_root->block_rsv = &fs_info->global_block_rsv;
|
||||
fs_info->tree_root->block_rsv = &fs_info->global_block_rsv;
|
||||
if (fs_info->quota_root)
|
||||
fs_info->quota_root->block_rsv = &fs_info->global_block_rsv;
|
||||
fs_info->chunk_root->block_rsv = &fs_info->chunk_block_rsv;
|
||||
|
||||
btrfs_update_global_block_rsv(fs_info);
|
||||
}
|
||||
|
||||
void btrfs_release_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
{
|
||||
btrfs_block_rsv_release(fs_info, &fs_info->global_block_rsv, (u64)-1);
|
||||
WARN_ON(fs_info->trans_block_rsv.size > 0);
|
||||
WARN_ON(fs_info->trans_block_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->chunk_block_rsv.size > 0);
|
||||
WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->delayed_block_rsv.size > 0);
|
||||
WARN_ON(fs_info->delayed_block_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->delayed_refs_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->delayed_refs_rsv.size > 0);
|
||||
}
|
||||
|
||||
static struct btrfs_block_rsv *get_block_rsv(
|
||||
const struct btrfs_trans_handle *trans,
|
||||
const struct btrfs_root *root)
|
||||
{
|
||||
struct btrfs_fs_info *fs_info = root->fs_info;
|
||||
struct btrfs_block_rsv *block_rsv = NULL;
|
||||
|
||||
if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||
|
||||
(root == fs_info->csum_root && trans->adding_csums) ||
|
||||
(root == fs_info->uuid_root))
|
||||
block_rsv = trans->block_rsv;
|
||||
|
||||
if (!block_rsv)
|
||||
block_rsv = root->block_rsv;
|
||||
|
||||
if (!block_rsv)
|
||||
block_rsv = &fs_info->empty_block_rsv;
|
||||
|
||||
return block_rsv;
|
||||
}
|
||||
|
||||
struct btrfs_block_rsv *btrfs_use_block_rsv(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *root,
|
||||
u32 blocksize)
|
||||
{
|
||||
struct btrfs_fs_info *fs_info = root->fs_info;
|
||||
struct btrfs_block_rsv *block_rsv;
|
||||
struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
|
||||
int ret;
|
||||
bool global_updated = false;
|
||||
|
||||
block_rsv = get_block_rsv(trans, root);
|
||||
|
||||
if (unlikely(block_rsv->size == 0))
|
||||
goto try_reserve;
|
||||
again:
|
||||
ret = btrfs_block_rsv_use_bytes(block_rsv, blocksize);
|
||||
if (!ret)
|
||||
return block_rsv;
|
||||
|
||||
if (block_rsv->failfast)
|
||||
return ERR_PTR(ret);
|
||||
|
||||
if (block_rsv->type == BTRFS_BLOCK_RSV_GLOBAL && !global_updated) {
|
||||
global_updated = true;
|
||||
btrfs_update_global_block_rsv(fs_info);
|
||||
goto again;
|
||||
}
|
||||
|
||||
/*
|
||||
* The global reserve still exists to save us from ourselves, so don't
|
||||
* warn_on if we are short on our delayed refs reserve.
|
||||
*/
|
||||
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);
|
||||
}
|
||||
|
||||
@ -3,6 +3,7 @@
|
||||
#ifndef BTRFS_BLOCK_RSV_H
|
||||
#define BTRFS_BLOCK_RSV_H
|
||||
|
||||
struct btrfs_trans_handle;
|
||||
enum btrfs_reserve_flush_enum;
|
||||
|
||||
/*
|
||||
@ -75,6 +76,12 @@ void btrfs_block_rsv_add_bytes(struct btrfs_block_rsv *block_rsv,
|
||||
u64 __btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
|
||||
struct btrfs_block_rsv *block_rsv,
|
||||
u64 num_bytes, u64 *qgroup_to_release);
|
||||
void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info);
|
||||
void btrfs_init_global_block_rsv(struct btrfs_fs_info *fs_info);
|
||||
void btrfs_release_global_block_rsv(struct btrfs_fs_info *fs_info);
|
||||
struct btrfs_block_rsv *btrfs_use_block_rsv(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *root,
|
||||
u32 blocksize);
|
||||
|
||||
static inline void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
|
||||
struct btrfs_block_rsv *block_rsv,
|
||||
@ -83,4 +90,12 @@ static inline void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
|
||||
__btrfs_block_rsv_release(fs_info, block_rsv, num_bytes, NULL);
|
||||
}
|
||||
|
||||
static inline void btrfs_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);
|
||||
}
|
||||
|
||||
#endif /* BTRFS_BLOCK_RSV_H */
|
||||
|
||||
@ -4347,27 +4347,6 @@ out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct btrfs_block_rsv *get_block_rsv(
|
||||
const struct btrfs_trans_handle *trans,
|
||||
const struct btrfs_root *root)
|
||||
{
|
||||
struct btrfs_fs_info *fs_info = root->fs_info;
|
||||
struct btrfs_block_rsv *block_rsv = NULL;
|
||||
|
||||
if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||
|
||||
(root == fs_info->csum_root && trans->adding_csums) ||
|
||||
(root == fs_info->uuid_root))
|
||||
block_rsv = trans->block_rsv;
|
||||
|
||||
if (!block_rsv)
|
||||
block_rsv = root->block_rsv;
|
||||
|
||||
if (!block_rsv)
|
||||
block_rsv = &fs_info->empty_block_rsv;
|
||||
|
||||
return block_rsv;
|
||||
}
|
||||
|
||||
/**
|
||||
* btrfs_migrate_to_delayed_refs_rsv - transfer bytes to our delayed refs rsv.
|
||||
* @fs_info - the fs info for our fs.
|
||||
@ -4508,95 +4487,6 @@ void btrfs_delayed_refs_rsv_release(struct btrfs_fs_info *fs_info, int nr)
|
||||
0, released, 0);
|
||||
}
|
||||
|
||||
static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
{
|
||||
struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
|
||||
struct btrfs_space_info *sinfo = block_rsv->space_info;
|
||||
u64 num_bytes;
|
||||
|
||||
/*
|
||||
* The global block rsv is based on the size of the extent tree, the
|
||||
* checksum tree and the root tree. If the fs is empty we want to set
|
||||
* it to a minimal amount for safety.
|
||||
*/
|
||||
num_bytes = btrfs_root_used(&fs_info->extent_root->root_item) +
|
||||
btrfs_root_used(&fs_info->csum_root->root_item) +
|
||||
btrfs_root_used(&fs_info->tree_root->root_item);
|
||||
num_bytes = max_t(u64, num_bytes, SZ_16M);
|
||||
|
||||
spin_lock(&sinfo->lock);
|
||||
spin_lock(&block_rsv->lock);
|
||||
|
||||
block_rsv->size = min_t(u64, num_bytes, SZ_512M);
|
||||
|
||||
if (block_rsv->reserved < block_rsv->size) {
|
||||
num_bytes = btrfs_space_info_used(sinfo, true);
|
||||
if (sinfo->total_bytes > num_bytes) {
|
||||
num_bytes = sinfo->total_bytes - num_bytes;
|
||||
num_bytes = min(num_bytes,
|
||||
block_rsv->size - block_rsv->reserved);
|
||||
block_rsv->reserved += num_bytes;
|
||||
btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
|
||||
num_bytes);
|
||||
trace_btrfs_space_reservation(fs_info, "space_info",
|
||||
sinfo->flags, num_bytes,
|
||||
1);
|
||||
}
|
||||
} else if (block_rsv->reserved > block_rsv->size) {
|
||||
num_bytes = block_rsv->reserved - block_rsv->size;
|
||||
btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
|
||||
-num_bytes);
|
||||
trace_btrfs_space_reservation(fs_info, "space_info",
|
||||
sinfo->flags, num_bytes, 0);
|
||||
block_rsv->reserved = block_rsv->size;
|
||||
}
|
||||
|
||||
if (block_rsv->reserved == block_rsv->size)
|
||||
block_rsv->full = 1;
|
||||
else
|
||||
block_rsv->full = 0;
|
||||
|
||||
spin_unlock(&block_rsv->lock);
|
||||
spin_unlock(&sinfo->lock);
|
||||
}
|
||||
|
||||
static void init_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
{
|
||||
struct btrfs_space_info *space_info;
|
||||
|
||||
space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
|
||||
fs_info->chunk_block_rsv.space_info = space_info;
|
||||
|
||||
space_info = btrfs_find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
|
||||
fs_info->global_block_rsv.space_info = space_info;
|
||||
fs_info->trans_block_rsv.space_info = space_info;
|
||||
fs_info->empty_block_rsv.space_info = space_info;
|
||||
fs_info->delayed_block_rsv.space_info = space_info;
|
||||
fs_info->delayed_refs_rsv.space_info = space_info;
|
||||
|
||||
fs_info->extent_root->block_rsv = &fs_info->delayed_refs_rsv;
|
||||
fs_info->csum_root->block_rsv = &fs_info->delayed_refs_rsv;
|
||||
fs_info->dev_root->block_rsv = &fs_info->global_block_rsv;
|
||||
fs_info->tree_root->block_rsv = &fs_info->global_block_rsv;
|
||||
if (fs_info->quota_root)
|
||||
fs_info->quota_root->block_rsv = &fs_info->global_block_rsv;
|
||||
fs_info->chunk_root->block_rsv = &fs_info->chunk_block_rsv;
|
||||
|
||||
update_global_block_rsv(fs_info);
|
||||
}
|
||||
|
||||
static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
{
|
||||
btrfs_block_rsv_release(fs_info, &fs_info->global_block_rsv, (u64)-1);
|
||||
WARN_ON(fs_info->trans_block_rsv.size > 0);
|
||||
WARN_ON(fs_info->trans_block_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->chunk_block_rsv.size > 0);
|
||||
WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->delayed_block_rsv.size > 0);
|
||||
WARN_ON(fs_info->delayed_block_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->delayed_refs_rsv.reserved > 0);
|
||||
WARN_ON(fs_info->delayed_refs_rsv.size > 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* btrfs_update_delayed_refs_rsv - adjust the size of the delayed refs rsv
|
||||
@ -5360,7 +5250,7 @@ void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info)
|
||||
|
||||
up_write(&fs_info->commit_root_sem);
|
||||
|
||||
update_global_block_rsv(fs_info);
|
||||
btrfs_update_global_block_rsv(fs_info);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -7117,73 +7007,6 @@ btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
||||
return buf;
|
||||
}
|
||||
|
||||
static struct btrfs_block_rsv *
|
||||
use_block_rsv(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *root, u32 blocksize)
|
||||
{
|
||||
struct btrfs_fs_info *fs_info = root->fs_info;
|
||||
struct btrfs_block_rsv *block_rsv;
|
||||
struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
|
||||
int ret;
|
||||
bool global_updated = false;
|
||||
|
||||
block_rsv = get_block_rsv(trans, root);
|
||||
|
||||
if (unlikely(block_rsv->size == 0))
|
||||
goto try_reserve;
|
||||
again:
|
||||
ret = btrfs_block_rsv_use_bytes(block_rsv, blocksize);
|
||||
if (!ret)
|
||||
return block_rsv;
|
||||
|
||||
if (block_rsv->failfast)
|
||||
return ERR_PTR(ret);
|
||||
|
||||
if (block_rsv->type == BTRFS_BLOCK_RSV_GLOBAL && !global_updated) {
|
||||
global_updated = true;
|
||||
update_global_block_rsv(fs_info);
|
||||
goto again;
|
||||
}
|
||||
|
||||
/*
|
||||
* The global reserve still exists to save us from ourselves, so don't
|
||||
* warn_on if we are short on our delayed refs reserve.
|
||||
*/
|
||||
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 @@ out_free_buf:
|
||||
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
Block a user