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nfsd race fixes: jfs

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jfs version of Al Viro's nfsd race patches

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Dave Kleikamp 2008-12-30 22:08:37 -06:00 committed by Al Viro
parent c1eaa26b67
commit 1f3403fa64
2 changed files with 37 additions and 16 deletions
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29
fs/jfs/jfs_inode.c
View file

@ -79,7 +79,8 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
inode = new_inode(sb);
if (!inode) {
jfs_warn("ialloc: new_inode returned NULL!");
return ERR_PTR(-ENOMEM);
rc = -ENOMEM;
goto fail;
}
jfs_inode = JFS_IP(inode);
@ -89,8 +90,12 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
jfs_warn("ialloc: diAlloc returned %d!", rc);
if (rc == -EIO)
make_bad_inode(inode);
iput(inode);
return ERR_PTR(rc);
goto fail_put;
}
if (insert_inode_locked(inode) < 0) {
rc = -EINVAL;
goto fail_unlock;
}
inode->i_uid = current_fsuid();
@ -112,11 +117,8 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
* Allocate inode to quota.
*/
if (DQUOT_ALLOC_INODE(inode)) {
DQUOT_DROP(inode);
inode->i_flags |= S_NOQUOTA;
inode->i_nlink = 0;
iput(inode);
return ERR_PTR(-EDQUOT);
rc = -EDQUOT;
goto fail_drop;
}
inode->i_mode = mode;
@ -158,4 +160,15 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
jfs_info("ialloc returns inode = 0x%p\n", inode);
return inode;
fail_drop:
DQUOT_DROP(inode);
inode->i_flags |= S_NOQUOTA;
fail_unlock:
inode->i_nlink = 0;
unlock_new_inode(inode);
fail_put:
iput(inode);
fail:
return ERR_PTR(rc);
}

24
fs/jfs/namei.c
View file

@ -155,7 +155,6 @@ static int jfs_create(struct inode *dip, struct dentry *dentry, int mode,
ip->i_fop = &jfs_file_operations;
ip->i_mapping->a_ops = &jfs_aops;
insert_inode_hash(ip);
mark_inode_dirty(ip);
dip->i_ctime = dip->i_mtime = CURRENT_TIME;
@ -171,9 +170,12 @@ static int jfs_create(struct inode *dip, struct dentry *dentry, int mode,
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
unlock_new_inode(ip);
iput(ip);
} else
} else {
d_instantiate(dentry, ip);
unlock_new_inode(ip);
}
out2:
free_UCSname(&dname);
@ -289,7 +291,6 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
ip->i_op = &jfs_dir_inode_operations;
ip->i_fop = &jfs_dir_operations;
insert_inode_hash(ip);
mark_inode_dirty(ip);
/* update parent directory inode */
@ -306,9 +307,12 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
unlock_new_inode(ip);
iput(ip);
} else
} else {
d_instantiate(dentry, ip);
unlock_new_inode(ip);
}
out2:
free_UCSname(&dname);
@ -1019,7 +1023,6 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
goto out3;
}
insert_inode_hash(ip);
mark_inode_dirty(ip);
dip->i_ctime = dip->i_mtime = CURRENT_TIME;
@ -1039,9 +1042,12 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
unlock_new_inode(ip);
iput(ip);
} else
} else {
d_instantiate(dentry, ip);
unlock_new_inode(ip);
}
out2:
free_UCSname(&dname);
@ -1399,7 +1405,6 @@ static int jfs_mknod(struct inode *dir, struct dentry *dentry,
jfs_ip->dev = new_encode_dev(rdev);
init_special_inode(ip, ip->i_mode, rdev);
insert_inode_hash(ip);
mark_inode_dirty(ip);
dir->i_ctime = dir->i_mtime = CURRENT_TIME;
@ -1417,9 +1422,12 @@ static int jfs_mknod(struct inode *dir, struct dentry *dentry,
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
unlock_new_inode(ip);
iput(ip);
} else
} else {
d_instantiate(dentry, ip);
unlock_new_inode(ip);
}
out1:
free_UCSname(&dname);