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authorLiu Bo <bo.li.liu@oracle.com>2012-11-14 14:34:34 +0000
committerJosef Bacik <jbacik@fusionio.com>2012-12-12 17:15:28 -0500
commitb53d3f5db2b79637acadc06a330db6c2c60863f5 (patch)
treef5ad7a1612f413e1ae459eb88d20642972d6b02c /fs/btrfs
parent3ef5969cd8a42a78ccdbc53f7abb2e6136b2ec65 (diff)
downloadlinux-b53d3f5db2b79637acadc06a330db6c2c60863f5.tar.bz2
Btrfs: cleanup for btrfs_btree_balance_dirty
- 'nr' is no more used. - btrfs_btree_balance_dirty() and __btrfs_btree_balance_dirty() can share a bunch of code. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/delayed-inode.c5
-rw-r--r--fs/btrfs/disk-io.c29
-rw-r--r--fs/btrfs/disk-io.h4
-rw-r--r--fs/btrfs/file.c9
-rw-r--r--fs/btrfs/inode.c42
-rw-r--r--fs/btrfs/relocation.c22
-rw-r--r--fs/btrfs/transaction.c4
7 files changed, 34 insertions, 81 deletions
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 0c6dca550ea1..34836036f01b 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1257,7 +1257,6 @@ static void btrfs_async_run_delayed_node_done(struct btrfs_work *work)
struct btrfs_delayed_node *delayed_node = NULL;
struct btrfs_root *root;
struct btrfs_block_rsv *block_rsv;
- unsigned long nr = 0;
int need_requeue = 0;
int ret;
@@ -1318,11 +1317,9 @@ static void btrfs_async_run_delayed_node_done(struct btrfs_work *work)
delayed_node);
mutex_unlock(&delayed_node->mutex);
- nr = trans->blocks_used;
-
trans->block_rsv = block_rsv;
btrfs_end_transaction_dmeta(trans, root);
- __btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty_nodelay(root);
free_path:
btrfs_free_path(path);
out:
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 07a2162cdd65..ff5d259ac275 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3411,7 +3411,8 @@ void btrfs_mark_buffer_dirty(struct extent_buffer *buf)
}
}
-void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
+static void __btrfs_btree_balance_dirty(struct btrfs_root *root,
+ int flush_delayed)
{
/*
* looks as though older kernels can get into trouble with
@@ -3423,7 +3424,8 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
if (current->flags & PF_MEMALLOC)
return;
- btrfs_balance_delayed_items(root);
+ if (flush_delayed)
+ btrfs_balance_delayed_items(root);
num_dirty = root->fs_info->dirty_metadata_bytes;
@@ -3434,25 +3436,14 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
return;
}
-void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
+void btrfs_btree_balance_dirty(struct btrfs_root *root)
{
- /*
- * looks as though older kernels can get into trouble with
- * this code, they end up stuck in balance_dirty_pages forever
- */
- u64 num_dirty;
- unsigned long thresh = 32 * 1024 * 1024;
-
- if (current->flags & PF_MEMALLOC)
- return;
-
- num_dirty = root->fs_info->dirty_metadata_bytes;
+ __btrfs_btree_balance_dirty(root, 1);
+}
- if (num_dirty > thresh) {
- balance_dirty_pages_ratelimited_nr(
- root->fs_info->btree_inode->i_mapping, 1);
- }
- return;
+void btrfs_btree_balance_dirty_nodelay(struct btrfs_root *root)
+{
+ __btrfs_btree_balance_dirty(root, 0);
}
int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid)
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 2025a9132c16..305c33efb0e3 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -62,8 +62,8 @@ struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root,
struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
struct btrfs_key *location);
int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info);
-void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
-void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
+void btrfs_btree_balance_dirty(struct btrfs_root *root);
+void btrfs_btree_balance_dirty_nodelay(struct btrfs_root *root);
void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 883cf826cf25..bd7f1b01e051 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1349,7 +1349,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
balance_dirty_pages_ratelimited_nr(inode->i_mapping,
dirty_pages);
if (dirty_pages < (root->leafsize >> PAGE_CACHE_SHIFT) + 1)
- btrfs_btree_balance_dirty(root, 1);
+ btrfs_btree_balance_dirty(root);
pos += copied;
num_written += copied;
@@ -1803,7 +1803,6 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
u64 cur_offset = lockstart;
u64 min_size = btrfs_calc_trunc_metadata_size(root, 1);
u64 drop_end;
- unsigned long nr;
int ret = 0;
int err = 0;
bool same_page = (offset >> PAGE_CACHE_SHIFT) ==
@@ -1931,9 +1930,8 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
break;
}
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
trans = btrfs_start_transaction(root, 3);
if (IS_ERR(trans)) {
@@ -1969,9 +1967,8 @@ out_trans:
trans->block_rsv = &root->fs_info->trans_block_rsv;
ret = btrfs_update_inode(trans, root, inode);
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
out_free:
btrfs_free_path(path);
btrfs_free_block_rsv(root, rsv);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e8733fab2739..aabf747d056e 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3091,7 +3091,6 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
struct btrfs_trans_handle *trans;
struct inode *inode = dentry->d_inode;
int ret;
- unsigned long nr = 0;
trans = __unlink_start_trans(dir, dentry);
if (IS_ERR(trans))
@@ -3111,9 +3110,8 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
}
out:
- nr = trans->blocks_used;
__unlink_end_trans(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
return ret;
}
@@ -3203,7 +3201,6 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
int err = 0;
struct btrfs_root *root = BTRFS_I(dir)->root;
struct btrfs_trans_handle *trans;
- unsigned long nr = 0;
if (inode->i_size > BTRFS_EMPTY_DIR_SIZE)
return -ENOTEMPTY;
@@ -3232,9 +3229,8 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
if (!err)
btrfs_i_size_write(inode, 0);
out:
- nr = trans->blocks_used;
__unlink_end_trans(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
return err;
}
@@ -3800,7 +3796,6 @@ void btrfs_evict_inode(struct inode *inode)
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_block_rsv *rsv, *global_rsv;
u64 min_size = btrfs_calc_trunc_metadata_size(root, 1);
- unsigned long nr;
int ret;
trace_btrfs_inode_evict(inode);
@@ -3882,10 +3877,9 @@ void btrfs_evict_inode(struct inode *inode)
ret = btrfs_update_inode(trans, root, inode);
BUG_ON(ret);
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
trans = NULL;
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
}
btrfs_free_block_rsv(root, rsv);
@@ -3901,9 +3895,8 @@ void btrfs_evict_inode(struct inode *inode)
root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID))
btrfs_return_ino(root, btrfs_ino(inode));
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
no_delete:
clear_inode(inode);
return;
@@ -4915,7 +4908,6 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
int err;
int drop_inode = 0;
u64 objectid;
- unsigned long nr = 0;
u64 index = 0;
if (!new_valid_dev(rdev))
@@ -4965,9 +4957,8 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
d_instantiate(dentry, inode);
}
out_unlock:
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
if (drop_inode) {
inode_dec_link_count(inode);
iput(inode);
@@ -4983,7 +4974,6 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
struct inode *inode = NULL;
int drop_inode = 0;
int err;
- unsigned long nr = 0;
u64 objectid;
u64 index = 0;
@@ -5033,13 +5023,12 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
d_instantiate(dentry, inode);
}
out_unlock:
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
if (drop_inode) {
inode_dec_link_count(inode);
iput(inode);
}
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
return err;
}
@@ -5050,7 +5039,6 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
struct btrfs_root *root = BTRFS_I(dir)->root;
struct inode *inode = old_dentry->d_inode;
u64 index;
- unsigned long nr = 0;
int err;
int drop_inode = 0;
@@ -5094,14 +5082,13 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
btrfs_log_new_name(trans, inode, NULL, parent);
}
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
fail:
if (drop_inode) {
inode_dec_link_count(inode);
iput(inode);
}
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
return err;
}
@@ -5114,7 +5101,6 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
int drop_on_err = 0;
u64 objectid = 0;
u64 index = 0;
- unsigned long nr = 1;
/*
* 2 items for inode and ref
@@ -5160,11 +5146,10 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
drop_on_err = 0;
out_fail:
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
if (drop_on_err)
iput(inode);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
return err;
}
@@ -6872,7 +6857,6 @@ static int btrfs_truncate(struct inode *inode)
int ret;
int err = 0;
struct btrfs_trans_handle *trans;
- unsigned long nr;
u64 mask = root->sectorsize - 1;
u64 min_size = btrfs_calc_trunc_metadata_size(root, 1);
@@ -6995,9 +6979,8 @@ static int btrfs_truncate(struct inode *inode)
break;
}
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
trans = btrfs_start_transaction(root, 2);
if (IS_ERR(trans)) {
@@ -7031,9 +7014,8 @@ static int btrfs_truncate(struct inode *inode)
if (ret && !err)
err = ret;
- nr = trans->blocks_used;
ret = btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
}
out:
@@ -7594,7 +7576,6 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
unsigned long ptr;
struct btrfs_file_extent_item *ei;
struct extent_buffer *leaf;
- unsigned long nr = 0;
name_len = strlen(symname) + 1;
if (name_len > BTRFS_MAX_INLINE_DATA_SIZE(root))
@@ -7692,13 +7673,12 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
out_unlock:
if (!err)
d_instantiate(dentry, inode);
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
if (drop_inode) {
inode_dec_link_count(inode);
iput(inode);
}
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
return err;
}
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 270f24ffe1be..300e09ac3659 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2025,7 +2025,6 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc,
struct btrfs_root_item *root_item;
struct btrfs_path *path;
struct extent_buffer *leaf;
- unsigned long nr;
int level;
int max_level;
int replaced = 0;
@@ -2126,10 +2125,9 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc,
path->slots[level]);
root_item->drop_level = level;
- nr = trans->blocks_used;
btrfs_end_transaction_throttle(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
if (replaced && rc->stage == UPDATE_DATA_PTRS)
invalidate_extent_cache(root, &key, &next_key);
@@ -2156,10 +2154,9 @@ out:
btrfs_update_reloc_root(trans, root);
}
- nr = trans->blocks_used;
btrfs_end_transaction_throttle(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
if (replaced && rc->stage == UPDATE_DATA_PTRS)
invalidate_extent_cache(root, &key, &next_key);
@@ -3262,7 +3259,6 @@ static int delete_block_group_cache(struct btrfs_fs_info *fs_info,
struct btrfs_path *path;
struct btrfs_root *root = fs_info->tree_root;
struct btrfs_trans_handle *trans;
- unsigned long nr;
int ret = 0;
if (inode)
@@ -3296,9 +3292,8 @@ truncate:
ret = btrfs_truncate_free_space_cache(root, trans, path, inode);
btrfs_free_path(path);
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
out:
iput(inode);
return ret;
@@ -3715,7 +3710,6 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
struct btrfs_trans_handle *trans = NULL;
struct btrfs_path *path;
struct btrfs_extent_item *ei;
- unsigned long nr;
u64 flags;
u32 item_size;
int ret;
@@ -3832,9 +3826,8 @@ restart:
ret = btrfs_commit_transaction(trans, rc->extent_root);
BUG_ON(ret);
} else {
- nr = trans->blocks_used;
btrfs_end_transaction_throttle(trans, rc->extent_root);
- btrfs_btree_balance_dirty(rc->extent_root, nr);
+ btrfs_btree_balance_dirty(rc->extent_root);
}
trans = NULL;
@@ -3864,9 +3857,8 @@ restart:
GFP_NOFS);
if (trans) {
- nr = trans->blocks_used;
btrfs_end_transaction_throttle(trans, rc->extent_root);
- btrfs_btree_balance_dirty(rc->extent_root, nr);
+ btrfs_btree_balance_dirty(rc->extent_root);
}
if (!err) {
@@ -3945,7 +3937,6 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans;
struct btrfs_root *root;
struct btrfs_key key;
- unsigned long nr;
u64 objectid = BTRFS_FIRST_FREE_OBJECTID;
int err = 0;
@@ -3973,9 +3964,8 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
err = btrfs_orphan_add(trans, inode);
out:
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(root, nr);
+ btrfs_btree_balance_dirty(root);
if (err) {
if (inode)
iput(inode);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f21f39f0b1a1..7b297354e738 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -952,7 +952,6 @@ int btrfs_defrag_root(struct btrfs_root *root, int cacheonly)
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_trans_handle *trans;
int ret;
- unsigned long nr;
if (xchg(&root->defrag_running, 1))
return 0;
@@ -964,9 +963,8 @@ int btrfs_defrag_root(struct btrfs_root *root, int cacheonly)
ret = btrfs_defrag_leaves(trans, root, cacheonly);
- nr = trans->blocks_used;
btrfs_end_transaction(trans, root);
- btrfs_btree_balance_dirty(info->tree_root, nr);
+ btrfs_btree_balance_dirty(info->tree_root);
cond_resched();
if (btrfs_fs_closing(root->fs_info) || ret != -EAGAIN)