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authorYan, Zheng <zheng.yan@oracle.com>2009-11-12 09:37:02 +0000
committerChris Mason <chris.mason@oracle.com>2009-12-17 12:33:33 -0500
commit2e4bfab97055aa6acdd0637913bd705c2d6506d6 (patch)
tree2c07c3668c8d13ee1e2076d32a728c60eaa8f4ed
parentc71bf099abddf3e0fdc27f251ba76fca1461d49a (diff)
downloadlinux-sh-2e4bfab97055aa6acdd0637913bd705c2d6506d6.tar.gz
Btrfs: Avoid orphan inodes cleanup during committing transaction
btrfs_lookup_dentry may trigger orphan cleanup, so it's not good to call it while committing a transaction. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/ioctl.c29
-rw-r--r--fs/btrfs/transaction.c4
2 files changed, 17 insertions, 16 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index a1a8db8c149d..3d6b33871afe 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -237,7 +237,6 @@ static noinline int create_subvol(struct btrfs_root *root,
u64 objectid;
u64 new_dirid = BTRFS_FIRST_FREE_OBJECTID;
u64 index = 0;
- unsigned long nr = 1;
/*
* 1 - inode item
@@ -342,24 +341,21 @@ static noinline int create_subvol(struct btrfs_root *root,
d_instantiate(dentry, btrfs_lookup_dentry(dir, dentry));
fail:
- nr = trans->blocks_used;
err = btrfs_commit_transaction(trans, root);
if (err && !ret)
ret = err;
btrfs_unreserve_metadata_space(root, 6);
- btrfs_btree_balance_dirty(root, nr);
return ret;
}
static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
char *name, int namelen)
{
+ struct inode *inode;
struct btrfs_pending_snapshot *pending_snapshot;
struct btrfs_trans_handle *trans;
- int ret = 0;
- int err;
- unsigned long nr = 0;
+ int ret;
if (!root->ref_cows)
return -EINVAL;
@@ -372,20 +368,20 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
*/
ret = btrfs_reserve_metadata_space(root, 6);
if (ret)
- goto fail_unlock;
+ goto fail;
pending_snapshot = kzalloc(sizeof(*pending_snapshot), GFP_NOFS);
if (!pending_snapshot) {
ret = -ENOMEM;
btrfs_unreserve_metadata_space(root, 6);
- goto fail_unlock;
+ goto fail;
}
pending_snapshot->name = kmalloc(namelen + 1, GFP_NOFS);
if (!pending_snapshot->name) {
ret = -ENOMEM;
kfree(pending_snapshot);
btrfs_unreserve_metadata_space(root, 6);
- goto fail_unlock;
+ goto fail;
}
memcpy(pending_snapshot->name, name, namelen);
pending_snapshot->name[namelen] = '\0';
@@ -395,10 +391,19 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
pending_snapshot->root = root;
list_add(&pending_snapshot->list,
&trans->transaction->pending_snapshots);
- err = btrfs_commit_transaction(trans, root);
+ ret = btrfs_commit_transaction(trans, root);
+ BUG_ON(ret);
+ btrfs_unreserve_metadata_space(root, 6);
-fail_unlock:
- btrfs_btree_balance_dirty(root, nr);
+ inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry);
+ if (IS_ERR(inode)) {
+ ret = PTR_ERR(inode);
+ goto fail;
+ }
+ BUG_ON(!inode);
+ d_instantiate(dentry, inode);
+ ret = 0;
+fail:
return ret;
}
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index b7b22c344b66..728e8fe5d2cc 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -796,7 +796,6 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
memcpy(&pending->root_key, &key, sizeof(key));
fail:
kfree(new_root_item);
- btrfs_unreserve_metadata_space(root, 6);
return ret;
}
@@ -808,7 +807,6 @@ static noinline int finish_pending_snapshot(struct btrfs_fs_info *fs_info,
u64 index = 0;
struct btrfs_trans_handle *trans;
struct inode *parent_inode;
- struct inode *inode;
struct btrfs_root *parent_root;
parent_inode = pending->dentry->d_parent->d_inode;
@@ -840,8 +838,6 @@ static noinline int finish_pending_snapshot(struct btrfs_fs_info *fs_info,
BUG_ON(ret);
- inode = btrfs_lookup_dentry(parent_inode, pending->dentry);
- d_instantiate(pending->dentry, inode);
fail:
btrfs_end_transaction(trans, fs_info->fs_root);
return ret;