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Merge tag 'for-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

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Pull btrfs fixes from David Sterba:
 "This contains a few fixups to the qgroup patches that were merged this
  dev cycle, unaligned access fix, blockgroup removal corner case fix
  and a small debugging output tweak"

* tag 'for-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: print-tree: debugging output enhancement
  btrfs: Fix race condition between delayed refs and blockgroup removal
  btrfs: fix unaligned access in readdir
  btrfs: Fix wrong btrfs_delalloc_release_extents parameter
  btrfs: delayed-inode: Remove wrong qgroup meta reservation calls
  btrfs: qgroup: Use independent and accurate per inode qgroup rsv
  btrfs: qgroup: Commit transaction in advance to reduce early EDQUOT
This commit is contained in:
Linus Torvalds
2018-04-22 12:09:27 -07:00
parent 37a535edd7 c087232374
commit d54b5c1315
13 changed files with 199 additions and 47 deletions
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73
fs/btrfs/extent-tree.c
View File

@@ -2601,13 +2601,19 @@ static int cleanup_ref_head(struct btrfs_trans_handle *trans,
trace_run_delayed_ref_head(fs_info, head, 0);
if (head->total_ref_mod < 0) {
struct btrfs_block_group_cache *cache;
struct btrfs_space_info *space_info;
u64 flags;
cache = btrfs_lookup_block_group(fs_info, head->bytenr);
ASSERT(cache);
percpu_counter_add(&cache->space_info->total_bytes_pinned,
if (head->is_data)
flags = BTRFS_BLOCK_GROUP_DATA;
else if (head->is_system)
flags = BTRFS_BLOCK_GROUP_SYSTEM;
else
flags = BTRFS_BLOCK_GROUP_METADATA;
space_info = __find_space_info(fs_info, flags);
ASSERT(space_info);
percpu_counter_add(&space_info->total_bytes_pinned,
-head->num_bytes);
btrfs_put_block_group(cache);
if (head->is_data) {
spin_lock(&delayed_refs->lock);
@@ -5559,14 +5565,18 @@ again:
static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
struct btrfs_block_rsv *block_rsv,
struct btrfs_block_rsv *dest, u64 num_bytes)
struct btrfs_block_rsv *dest, u64 num_bytes,
u64 *qgroup_to_release_ret)
{
struct btrfs_space_info *space_info = block_rsv->space_info;
u64 qgroup_to_release = 0;
u64 ret;
spin_lock(&block_rsv->lock);
if (num_bytes == (u64)-1)
if (num_bytes == (u64)-1) {
num_bytes = block_rsv->size;
qgroup_to_release = block_rsv->qgroup_rsv_size;
}
block_rsv->size -= num_bytes;
if (block_rsv->reserved >= block_rsv->size) {
num_bytes = block_rsv->reserved - block_rsv->size;
@@ -5575,6 +5585,13 @@ static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
} else {
num_bytes = 0;
}
if (block_rsv->qgroup_rsv_reserved >= block_rsv->qgroup_rsv_size) {
qgroup_to_release = block_rsv->qgroup_rsv_reserved -
block_rsv->qgroup_rsv_size;
block_rsv->qgroup_rsv_reserved = block_rsv->qgroup_rsv_size;
} else {
qgroup_to_release = 0;
}
spin_unlock(&block_rsv->lock);
ret = num_bytes;
@@ -5597,6 +5614,8 @@ static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
space_info_add_old_bytes(fs_info, space_info,
num_bytes);
}
if (qgroup_to_release_ret)
*qgroup_to_release_ret = qgroup_to_release;
return ret;
}
@@ -5738,17 +5757,21 @@ static int btrfs_inode_rsv_refill(struct btrfs_inode *inode,
struct btrfs_root *root = inode->root;
struct btrfs_block_rsv *block_rsv = &inode->block_rsv;
u64 num_bytes = 0;
u64 qgroup_num_bytes = 0;
int ret = -ENOSPC;
spin_lock(&block_rsv->lock);
if (block_rsv->reserved < block_rsv->size)
num_bytes = block_rsv->size - block_rsv->reserved;
if (block_rsv->qgroup_rsv_reserved < block_rsv->qgroup_rsv_size)
qgroup_num_bytes = block_rsv->qgroup_rsv_size -
block_rsv->qgroup_rsv_reserved;
spin_unlock(&block_rsv->lock);
if (num_bytes == 0)
return 0;
ret = btrfs_qgroup_reserve_meta_prealloc(root, num_bytes, true);
ret = btrfs_qgroup_reserve_meta_prealloc(root, qgroup_num_bytes, true);
if (ret)
return ret;
ret = reserve_metadata_bytes(root, block_rsv, num_bytes, flush);
@@ -5756,7 +5779,13 @@ static int btrfs_inode_rsv_refill(struct btrfs_inode *inode,
block_rsv_add_bytes(block_rsv, num_bytes, 0);
trace_btrfs_space_reservation(root->fs_info, "delalloc",
btrfs_ino(inode), num_bytes, 1);
}
/* Don't forget to increase qgroup_rsv_reserved */
spin_lock(&block_rsv->lock);
block_rsv->qgroup_rsv_reserved += qgroup_num_bytes;
spin_unlock(&block_rsv->lock);
} else
btrfs_qgroup_free_meta_prealloc(root, qgroup_num_bytes);
return ret;
}
@@ -5777,20 +5806,23 @@ static void btrfs_inode_rsv_release(struct btrfs_inode *inode, bool qgroup_free)
struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
struct btrfs_block_rsv *block_rsv = &inode->block_rsv;
u64 released = 0;
u64 qgroup_to_release = 0;
/*
* Since we statically set the block_rsv->size we just want to say we
* are releasing 0 bytes, and then we'll just get the reservation over
* the size free'd.
*/
released = block_rsv_release_bytes(fs_info, block_rsv, global_rsv, 0);
released = block_rsv_release_bytes(fs_info, block_rsv, global_rsv, 0,
&qgroup_to_release);
if (released > 0)
trace_btrfs_space_reservation(fs_info, "delalloc",
btrfs_ino(inode), released, 0);
if (qgroup_free)
btrfs_qgroup_free_meta_prealloc(inode->root, released);
btrfs_qgroup_free_meta_prealloc(inode->root, qgroup_to_release);
else
btrfs_qgroup_convert_reserved_meta(inode->root, released);
btrfs_qgroup_convert_reserved_meta(inode->root,
qgroup_to_release);
}
void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
@@ -5802,7 +5834,7 @@ void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
if (global_rsv == block_rsv ||
block_rsv->space_info != global_rsv->space_info)
global_rsv = NULL;
block_rsv_release_bytes(fs_info, block_rsv, global_rsv, num_bytes);
block_rsv_release_bytes(fs_info, block_rsv, global_rsv, num_bytes, NULL);
}
static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
@@ -5882,7 +5914,7 @@ static void init_global_block_rsv(struct btrfs_fs_info *fs_info)
static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
{
block_rsv_release_bytes(fs_info, &fs_info->global_block_rsv, NULL,
(u64)-1);
(u64)-1, NULL);
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);
@@ -5906,7 +5938,7 @@ void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans)
WARN_ON_ONCE(!list_empty(&trans->new_bgs));
block_rsv_release_bytes(fs_info, &fs_info->chunk_block_rsv, NULL,
trans->chunk_bytes_reserved);
trans->chunk_bytes_reserved, NULL);
trans->chunk_bytes_reserved = 0;
}
@@ -6011,6 +6043,7 @@ static void btrfs_calculate_inode_block_rsv_size(struct btrfs_fs_info *fs_info,
{
struct btrfs_block_rsv *block_rsv = &inode->block_rsv;
u64 reserve_size = 0;
u64 qgroup_rsv_size = 0;
u64 csum_leaves;
unsigned outstanding_extents;
@@ -6023,9 +6056,17 @@ static void btrfs_calculate_inode_block_rsv_size(struct btrfs_fs_info *fs_info,
inode->csum_bytes);
reserve_size += btrfs_calc_trans_metadata_size(fs_info,
csum_leaves);
/*
* For qgroup rsv, the calculation is very simple:
* account one nodesize for each outstanding extent
*
* This is overestimating in most cases.
*/
qgroup_rsv_size = outstanding_extents * fs_info->nodesize;
spin_lock(&block_rsv->lock);
block_rsv->size = reserve_size;
block_rsv->qgroup_rsv_size = qgroup_rsv_size;
spin_unlock(&block_rsv->lock);
}
@@ -8403,7 +8444,7 @@ static void unuse_block_rsv(struct btrfs_fs_info *fs_info,
struct btrfs_block_rsv *block_rsv, u32 blocksize)
{
block_rsv_add_bytes(block_rsv, blocksize, 0);
block_rsv_release_bytes(fs_info, block_rsv, NULL, 0);
block_rsv_release_bytes(fs_info, block_rsv, NULL, 0, NULL);
}
/*