aboutsummaryrefslogtreecommitdiff
path: root/fs/btrfs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/ctree.h4
-rw-r--r--fs/btrfs/extent-tree.c41
-rw-r--r--fs/btrfs/free-space-cache.c2
-rw-r--r--fs/btrfs/inode.c4
-rw-r--r--fs/btrfs/relocation.c6
-rw-r--r--fs/btrfs/transaction.c4
6 files changed, 37 insertions, 24 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index ea60897a917..227620993bc 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2252,8 +2252,10 @@ int btrfs_block_rsv_add(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes);
int btrfs_block_rsv_check(struct btrfs_root *root,
+ struct btrfs_block_rsv *block_rsv, int min_factor);
+int btrfs_block_rsv_refill(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
- u64 min_reserved, int min_factor, int flush);
+ u64 min_reserved);
int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
struct btrfs_block_rsv *dst_rsv,
u64 num_bytes);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index eb4fe56b08b..a5f1421eeee 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) {
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 5d40c1ed822..2fecfc3183e 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -203,7 +203,7 @@ int btrfs_truncate_free_space_cache(struct btrfs_root *root,
rsv = trans->block_rsv;
trans->block_rsv = root->orphan_block_rsv;
- ret = btrfs_block_rsv_check(root, root->orphan_block_rsv, 0, 5, 0);
+ ret = btrfs_block_rsv_check(root, root->orphan_block_rsv, 5);
if (ret)
return ret;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index b6b70bdd099..f12747c9447 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3604,7 +3604,7 @@ void btrfs_evict_inode(struct inode *inode)
* doing the truncate.
*/
while (1) {
- ret = btrfs_block_rsv_check(root, rsv, min_size, 0, 1);
+ ret = btrfs_block_rsv_refill(root, rsv, min_size);
/*
* Try and steal from the global reserve since we will
@@ -6613,7 +6613,7 @@ static int btrfs_truncate(struct inode *inode)
btrfs_add_ordered_operation(trans, root, inode);
while (1) {
- ret = btrfs_block_rsv_check(root, rsv, min_size, 0, 1);
+ ret = btrfs_block_rsv_refill(root, rsv, min_size);
if (ret) {
/*
* This can only happen with the original transaction we
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 7fa090fa0d3..10af6a0e086 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2041,8 +2041,7 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc,
BUG_ON(IS_ERR(trans));
trans->block_rsv = rc->block_rsv;
- ret = btrfs_block_rsv_check(root, rc->block_rsv, min_reserved,
- 0, 0);
+ ret = btrfs_block_rsv_refill(root, rc->block_rsv, min_reserved);
if (ret) {
BUG_ON(ret != -EAGAIN);
ret = btrfs_commit_transaction(trans, root);
@@ -3774,8 +3773,7 @@ restart:
}
}
- ret = btrfs_block_rsv_check(rc->extent_root, rc->block_rsv, 0,
- 5, 0);
+ ret = btrfs_block_rsv_check(rc->extent_root, rc->block_rsv, 5);
if (ret < 0) {
if (ret != -EAGAIN) {
err = ret;
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index d064fa0a4a0..29bef63e23b 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -418,8 +418,8 @@ static int should_end_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
int ret;
- ret = btrfs_block_rsv_check(root, &root->fs_info->global_block_rsv, 0,
- 5, 0);
+
+ ret = btrfs_block_rsv_check(root, &root->fs_info->global_block_rsv, 5);
return ret ? 1 : 0;
}