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SubjectRe: [PATCH -next v2] cifs: convert list_for_each to entry variant in smb2misc.c
tentatively merged into cifs-2.6.git for-next

On Thu, Jun 17, 2021 at 11:02 PM Baokun Li <libaokun1@huawei.com> wrote:
>
> convert list_for_each() to list_for_each_entry() where
> applicable.
>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Baokun Li <libaokun1@huawei.com>
> ---
> V1->V2:
> Convert the missing list_for_each to entry
>
> fs/cifs/smb2misc.c | 33 ++++++++-------------------------
> 1 file changed, 8 insertions(+), 25 deletions(-)
>
> diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
> index 06d555d4da9a..aba048153f79 100644
> --- a/fs/cifs/smb2misc.c
> +++ b/fs/cifs/smb2misc.c
> @@ -164,12 +164,10 @@ smb2_check_message(char *buf, unsigned int len, struct TCP_Server_Info *srvr)
> struct smb2_transform_hdr *thdr =
> (struct smb2_transform_hdr *)buf;
> struct cifs_ses *ses = NULL;
> - struct list_head *tmp;
>
> /* decrypt frame now that it is completely read in */
> spin_lock(&cifs_tcp_ses_lock);
> - list_for_each(tmp, &srvr->smb_ses_list) {
> - ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
> + list_for_each_entry(ses, &srvr->smb_ses_list, smb_ses_list) {
> if (ses->Suid == thdr->SessionId)
> break;
>
> @@ -548,7 +546,6 @@ static bool
> smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp)
> {
> __u8 lease_state;
> - struct list_head *tmp;
> struct cifsFileInfo *cfile;
> struct cifsInodeInfo *cinode;
> int ack_req = le32_to_cpu(rsp->Flags &
> @@ -556,8 +553,7 @@ smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp)
>
> lease_state = le32_to_cpu(rsp->NewLeaseState);
>
> - list_for_each(tmp, &tcon->openFileList) {
> - cfile = list_entry(tmp, struct cifsFileInfo, tlist);
> + list_for_each_entry(cfile, &tcon->openFileList, tlist) {
> cinode = CIFS_I(d_inode(cfile->dentry));
>
> if (memcmp(cinode->lease_key, rsp->LeaseKey,
> @@ -618,7 +614,6 @@ static bool
> smb2_is_valid_lease_break(char *buffer)
> {
> struct smb2_lease_break *rsp = (struct smb2_lease_break *)buffer;
> - struct list_head *tmp, *tmp1, *tmp2;
> struct TCP_Server_Info *server;
> struct cifs_ses *ses;
> struct cifs_tcon *tcon;
> @@ -628,15 +623,9 @@ smb2_is_valid_lease_break(char *buffer)
>
> /* look up tcon based on tid & uid */
> spin_lock(&cifs_tcp_ses_lock);
> - list_for_each(tmp, &cifs_tcp_ses_list) {
> - server = list_entry(tmp, struct TCP_Server_Info, tcp_ses_list);
> -
> - list_for_each(tmp1, &server->smb_ses_list) {
> - ses = list_entry(tmp1, struct cifs_ses, smb_ses_list);
> -
> - list_for_each(tmp2, &ses->tcon_list) {
> - tcon = list_entry(tmp2, struct cifs_tcon,
> - tcon_list);
> + list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
> + list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
> + list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
> spin_lock(&tcon->open_file_lock);
> cifs_stats_inc(
> &tcon->stats.cifs_stats.num_oplock_brks);
> @@ -687,7 +676,6 @@ bool
> smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
> {
> struct smb2_oplock_break *rsp = (struct smb2_oplock_break *)buffer;
> - struct list_head *tmp, *tmp1, *tmp2;
> struct cifs_ses *ses;
> struct cifs_tcon *tcon;
> struct cifsInodeInfo *cinode;
> @@ -710,16 +698,11 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
>
> /* look up tcon based on tid & uid */
> spin_lock(&cifs_tcp_ses_lock);
> - list_for_each(tmp, &server->smb_ses_list) {
> - ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
> -
> - list_for_each(tmp1, &ses->tcon_list) {
> - tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
> + list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
> + list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
>
> spin_lock(&tcon->open_file_lock);
> - list_for_each(tmp2, &tcon->openFileList) {
> - cfile = list_entry(tmp2, struct cifsFileInfo,
> - tlist);
> + list_for_each_entry(cfile, &tcon->openFileList, tlist) {
> if (rsp->PersistentFid !=
> cfile->fid.persistent_fid ||
> rsp->VolatileFid !=
> --
> 2.31.1
>


--
Thanks,

Steve

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