[patch][linux-cifs-client] fix a regression in cifs caused during lookup intent code patch

[Shirish Pargaonkar]

On Fri, May 1, 2009 at 3:16 PM, Shirish Pargaonkar
<shirishpargaonkar at gmail.com> wrote:
> Remove adding open file entry twice to lists in case of posix opens
>
> Do not fill file info twice in case of posix opens and creates
>
> This fixes the regression in cifs which resulted in failure to pass
> connectathon tests.
>
> diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
> index 461750e..97f68bd 100644
> --- a/fs/cifs/dir.c
> +++ b/fs/cifs/dir.c
> @@ -464,10 +464,8 @@ cifs_create_set_dentry:
>        if ((nd == NULL) || (!(nd->flags & LOOKUP_OPEN))) {
>                /* mknod case - do not leave file open */
>                CIFSSMBClose(xid, tcon, fileHandle);
> -       } else if (newinode) {
> -                       cifs_fill_fileinfo(newinode, fileHandle,
> -                                       cifs_sb->tcon, write_only);
>        }
> +
>  cifs_create_out:
>        kfree(buf);
>        kfree(full_path);
> diff --git a/fs/cifs/file.c b/fs/cifs/file.c
> index 50ca088..38c06f8 100644
> --- a/fs/cifs/file.c
> +++ b/fs/cifs/file.c
> @@ -129,15 +129,12 @@ static inline int
> cifs_posix_open_inode_helper(struct inode *inode,
>                        struct file *file, struct cifsInodeInfo *pCifsInode,
>                        struct cifsFileInfo *pCifsFile, int oplock, u16 netfid)
>  {
> -       struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
> -/*     struct timespec temp; */   /* BB REMOVEME BB */
>
>        file->private_data = kmalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
>        if (file->private_data == NULL)
>                return -ENOMEM;
>        pCifsFile = cifs_init_private(file->private_data, inode, file, netfid);
>        write_lock(&GlobalSMBSeslock);
> -       list_add(&pCifsFile->tlist, &cifs_sb->tcon->openFileList);
>
>        pCifsInode = CIFS_I(file->f_path.dentry->d_inode);
>        if (pCifsInode == NULL) {
> @@ -145,17 +142,6 @@ static inline int
> cifs_posix_open_inode_helper(struct inode *inode,
>                return -EINVAL;
>        }
>
> -       /* want handles we can use to read with first
> -          in the list so we do not have to walk the
> -          list to search for one in write_begin */
> -       if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
> -               list_add_tail(&pCifsFile->flist,
> -                             &pCifsInode->openFileList);
> -       } else {
> -               list_add(&pCifsFile->flist,
> -                        &pCifsInode->openFileList);
> -       }
> -
>        if (pCifsInode->clientCanCacheRead) {
>                /* we have the inode open somewhere else
>                   no need to discard cache data */
> ~
> ~
>

This patch can be ignored, spoke too soon, before testing against old
samba server.
Will post a patch which calls cifs_fill_fileinfo from cifs_create only
in non-posix cases.