From 1f3403fa640f9f7b135dee79f2d39d01c8ad4a08 Mon Sep 17 00:00:00 2001 From: Dave Kleikamp Date: Tue, 30 Dec 2008 22:08:37 -0600 Subject: nfsd race fixes: jfs jfs version of Al Viro's nfsd race patches Signed-off-by: Dave Kleikamp Signed-off-by: Al Viro --- fs/jfs/jfs_inode.c | 29 +++++++++++++++++++++-------- fs/jfs/namei.c | 24 ++++++++++++++++-------- 2 files changed, 37 insertions(+), 16 deletions(-) (limited to 'fs/jfs') diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c index 70022fd1c539..d4d142c2edd4 100644 --- a/fs/jfs/jfs_inode.c +++ b/fs/jfs/jfs_inode.c @@ -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); } diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index cc3cedffbfa1..b4de56b851e4 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -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); -- cgit v1.2.3-59-g8ed1b