So btrfs_block_rsv_migrate just unconditionally calls block_rsv_migrate_bytes.
Not only this but it unconditionally changes the size of the block_rsv. This
isn't a bug strictly speaking, but it makes truncate block rsv's look funny
because every time we migrate bytes over its size grows, even though we only
want it to be a specific size. So collapse this into one function that takes an
update_size argument and make truncate and evict not update the size for
consistency sake. Thanks,
Signed-off-by: Josef Bacik <jba...@fb.com>
---
fs/btrfs/ctree.h | 4 ++--
fs/btrfs/delayed-inode.c | 8 ++++----
fs/btrfs/extent-tree.c | 18 ++++++------------
fs/btrfs/file.c | 4 ++--
fs/btrfs/inode.c | 7 +++----
fs/btrfs/relocation.c | 2 +-
6 files changed, 18 insertions(+), 25 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 84a6a5b..b675066 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3646,8 +3646,8 @@ int btrfs_block_rsv_refill(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv, u64 min_reserved,
enum btrfs_reserve_flush_enum flush);
int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
- struct btrfs_block_rsv *dst_rsv,
- u64 num_bytes);
+ struct btrfs_block_rsv *dst_rsv, u64 num_bytes,
+ int update_size);
int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
struct btrfs_block_rsv *dest, u64 num_bytes,
int min_factor);
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 6cef006..d3cda0f 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -553,7 +553,7 @@ static int btrfs_delayed_item_reserve_metadata(struct
btrfs_trans_handle *trans,
dst_rsv = &root->fs_info->delayed_block_rsv;
num_bytes = btrfs_calc_trans_metadata_size(root, 1);
- ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes);
+ ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1);
if (!ret) {
trace_btrfs_space_reservation(root->fs_info, "delayed_item",
item->key.objectid,
@@ -649,7 +649,7 @@ static int btrfs_delayed_inode_reserve_metadata(
if (!ret)
goto out;
- ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes);
+ ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1);
if (!ret)
goto out;
@@ -663,12 +663,12 @@ static int btrfs_delayed_inode_reserve_metadata(
* since this really shouldn't happen that often.
*/
ret = btrfs_block_rsv_migrate(&root->fs_info->global_block_rsv,
- dst_rsv, num_bytes);
+ dst_rsv, num_bytes, 1);
goto out;
}
migrate:
- ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes);
+ ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1);
out:
/*
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c357c96..06f4e7b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5192,8 +5192,9 @@ static void block_rsv_release_bytes(struct btrfs_fs_info
*fs_info,
}
}
-static int block_rsv_migrate_bytes(struct btrfs_block_rsv *src,
- struct btrfs_block_rsv *dst, u64 num_bytes)
+int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src,
+ struct btrfs_block_rsv *dst, u64 num_bytes,
+ int update_size)
{
int ret;
@@ -5201,7 +5202,7 @@ static int block_rsv_migrate_bytes(struct btrfs_block_rsv
*src,
if (ret)
return ret;
- block_rsv_add_bytes(dst, num_bytes, 1);
+ block_rsv_add_bytes(dst, num_bytes, update_size);
return 0;
}
@@ -5308,13 +5309,6 @@ int btrfs_block_rsv_refill(struct btrfs_root *root,
return ret;
}
-int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
- struct btrfs_block_rsv *dst_rsv,
- u64 num_bytes)
-{
- return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
-}
-
void btrfs_block_rsv_release(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes)
@@ -5494,7 +5488,7 @@ int btrfs_orphan_reserve_metadata(struct
btrfs_trans_handle *trans,
u64 num_bytes = btrfs_calc_trans_metadata_size(root, 1);
trace_btrfs_space_reservation(root->fs_info, "orphan",
btrfs_ino(inode), num_bytes, 1);
- return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
+ return btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1);
}
void btrfs_orphan_release_metadata(struct inode *inode)
@@ -5549,7 +5543,7 @@ int btrfs_subvolume_reserve_metadata(struct btrfs_root
*root,
BTRFS_RESERVE_FLUSH_ALL);
if (ret == -ENOSPC && use_global_rsv)
- ret = btrfs_block_rsv_migrate(global_rsv, rsv, num_bytes);
+ ret = btrfs_block_rsv_migrate(global_rsv, rsv, num_bytes, 1);
if (ret && *qgroup_reserved)
btrfs_qgroup_free_meta(root, *qgroup_reserved);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 15a09cb..0ce4bb3 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2474,7 +2474,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t
offset, loff_t len)
}
ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, rsv,
- min_size);
+ min_size, 0);
BUG_ON(ret);
trans->block_rsv = rsv;
@@ -2517,7 +2517,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t
offset, loff_t len)
}
ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv,
- rsv, min_size);
+ rsv, min_size, 0);
BUG_ON(ret); /* shouldn't happen */
trans->block_rsv = rsv;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 41a5688..723e4bb 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5239,7 +5239,7 @@ void btrfs_evict_inode(struct inode *inode)
if (steal_from_global) {
if (!btrfs_check_space_for_delayed_refs(trans, root))
ret = btrfs_block_rsv_migrate(global_rsv, rsv,
- min_size);
+ min_size, 0);
else
ret = -ENOSPC;
}
@@ -9072,7 +9072,7 @@ static int btrfs_truncate(struct inode *inode)
/* Migrate the slack space for the truncate to our reserve */
ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, rsv,
- min_size);
+ min_size, 0);
BUG_ON(ret);
/*
@@ -9112,7 +9112,7 @@ static int btrfs_truncate(struct inode *inode)
}
ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv,
- rsv, min_size);
+ rsv, min_size, 0);
BUG_ON(ret); /* shouldn't happen */
trans->block_rsv = rsv;
}
@@ -9133,7 +9133,6 @@ static int btrfs_truncate(struct inode *inode)
ret = btrfs_end_transaction(trans, root);
btrfs_btree_balance_dirty(root);
}
-
out:
btrfs_free_block_rsv(root, rsv);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 2bd0011..61efa5f 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -4644,7 +4644,7 @@ int btrfs_reloc_post_snapshot(struct btrfs_trans_handle
*trans,
if (rc->merge_reloc_tree) {
ret = btrfs_block_rsv_migrate(&pending->block_rsv,
rc->block_rsv,
- rc->nodes_relocated);
+ rc->nodes_relocated, 1);
if (ret)
return ret;
}
--
2.5.0
--
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