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nfsd race fixes: reiserfs

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... and the same for reiserfs.  The difference here is that we need
insert_inode_locked4() to match iget5_locked().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2008-12-30 02:03:58 -05:00
parent 6b38e842bb
commit c1eaa26b67
2 changed files with 18 additions and 5 deletions
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15
fs/reiserfs/inode.c
View file

@ -1753,6 +1753,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
struct inode *inode)
{
struct super_block *sb;
struct reiserfs_iget_args args;
INITIALIZE_PATH(path_to_key);
struct cpu_key key;
struct item_head ih;
@ -1780,6 +1781,14 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
err = -ENOMEM;
goto out_bad_inode;
}
args.objectid = inode->i_ino = le32_to_cpu(ih.ih_key.k_objectid);
memcpy(INODE_PKEY(inode), &(ih.ih_key), KEY_SIZE);
args.dirid = le32_to_cpu(ih.ih_key.k_dir_id);
if (insert_inode_locked4(inode, args.objectid,
reiserfs_find_actor, &args) < 0) {
err = -EINVAL;
goto out_bad_inode;
}
if (old_format_only(sb))
/* not a perfect generation count, as object ids can be reused, but
** this is as good as reiserfs can do right now.
@ -1859,13 +1868,9 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
} else {
inode2sd(&sd, inode, inode->i_size);
}
// these do not go to on-disk stat data
inode->i_ino = le32_to_cpu(ih.ih_key.k_objectid);
// store in in-core inode the key of stat data and version all
// object items will have (directory items will have old offset
// format, other new objects will consist of new items)
memcpy(INODE_PKEY(inode), &(ih.ih_key), KEY_SIZE);
if (old_format_only(sb) || S_ISDIR(mode) || S_ISLNK(mode))
set_inode_item_key_version(inode, KEY_FORMAT_3_5);
else
@ -1929,7 +1934,6 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
reiserfs_mark_inode_private(inode);
}
insert_inode_hash(inode);
reiserfs_update_sd(th, inode);
reiserfs_check_path(&path_to_key);
@ -1956,6 +1960,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
out_inserted_sd:
inode->i_nlink = 0;
th->t_trans_id = 0; /* so the caller can't use this handle later */
unlock_new_inode(inode); /* OK to do even if we hadn't locked it */
/* If we were inheriting an ACL, we need to release the lock so that
* iput doesn't deadlock in reiserfs_delete_xattrs. The locking

8
fs/reiserfs/namei.c
View file

@ -646,6 +646,7 @@ static int reiserfs_create(struct inode *dir, struct dentry *dentry, int mode,
err = journal_end(&th, dir->i_sb, jbegin_count);
if (err)
retval = err;
unlock_new_inode(inode);
iput(inode);
goto out_failed;
}
@ -653,6 +654,7 @@ static int reiserfs_create(struct inode *dir, struct dentry *dentry, int mode,
reiserfs_update_inode_transaction(dir);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
retval = journal_end(&th, dir->i_sb, jbegin_count);
out_failed:
@ -727,11 +729,13 @@ static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, int mode,
err = journal_end(&th, dir->i_sb, jbegin_count);
if (err)
retval = err;
unlock_new_inode(inode);
iput(inode);
goto out_failed;
}
d_instantiate(dentry, inode);
unlock_new_inode(inode);
retval = journal_end(&th, dir->i_sb, jbegin_count);
out_failed:
@ -812,6 +816,7 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
err = journal_end(&th, dir->i_sb, jbegin_count);
if (err)
retval = err;
unlock_new_inode(inode);
iput(inode);
goto out_failed;
}
@ -819,6 +824,7 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
reiserfs_update_sd(&th, dir);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
retval = journal_end(&th, dir->i_sb, jbegin_count);
out_failed:
if (locked)
@ -1096,11 +1102,13 @@ static int reiserfs_symlink(struct inode *parent_dir,
err = journal_end(&th, parent_dir->i_sb, jbegin_count);
if (err)
retval = err;
unlock_new_inode(inode);
iput(inode);
goto out_failed;
}
d_instantiate(dentry, inode);
unlock_new_inode(inode);
retval = journal_end(&th, parent_dir->i_sb, jbegin_count);
out_failed:
reiserfs_write_unlock(parent_dir->i_sb);