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    Subject[PATCH 04/20] elevate mnt writers for callers of vfs_mkdir()
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    Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
    ---

    lxc-dave/fs/namei.c | 5 +++++
    lxc-dave/fs/nfsd/nfs4recover.c | 4 ++++
    2 files changed, 9 insertions(+)

    diff -puN fs/namei.c~C-elevate-writers-vfs_mkdir fs/namei.c
    --- lxc/fs/namei.c~C-elevate-writers-vfs_mkdir 2006-06-27 10:40:26.000000000 -0700
    +++ lxc-dave/fs/namei.c 2006-06-27 10:40:26.000000000 -0700
    @@ -1939,7 +1939,12 @@ asmlinkage long sys_mkdirat(int dfd, con

    if (!IS_POSIXACL(nd.dentry->d_inode))
    mode &= ~current->fs->umask;
    + error = mnt_want_write(nd.mnt);
    + if (error)
    + goto out_dput;
    error = vfs_mkdir(nd.dentry->d_inode, dentry, mode);
    + mnt_drop_write(nd.mnt);
    +out_dput:
    dput(dentry);
    out_unlock:
    mutex_unlock(&nd.dentry->d_inode->i_mutex);
    diff -puN fs/nfsd/nfs4recover.c~C-elevate-writers-vfs_mkdir fs/nfsd/nfs4recover.c
    --- lxc/fs/nfsd/nfs4recover.c~C-elevate-writers-vfs_mkdir 2006-06-27 10:40:26.000000000 -0700
    +++ lxc-dave/fs/nfsd/nfs4recover.c 2006-06-27 10:40:26.000000000 -0700
    @@ -155,7 +155,11 @@ nfsd4_create_clid_dir(struct nfs4_client
    dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
    goto out_put;
    }
    + status = mnt_want_write(rec_dir.mnt);
    + if (status)
    + goto out_put;
    status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
    + mnt_drop_write(rec_dir.mnt);
    out_put:
    dput(dentry);
    out_unlock:
    _
    -
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