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cifs: check only tcon status on tcon related functions 

We had a couple of checks for session in cifs_tree_connect
and cifs_mark_open_files_invalid, which were unnecessary.
And that was done with ses_lock. Changed that to tc_lock too.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Shyam Prasad N 2023-03-16 10:45:12 +00:00 committed by Steve French
parent 38e04b3e42
commit 2f0e4f0342
4 changed files with 19 additions and 11 deletions
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10
fs/cifs/connect.c
View File

@ -4036,9 +4036,13 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
/* only send once per connect */
spin_lock(&tcon->tc_lock);
if (tcon->ses->ses_status != SES_GOOD ||
(tcon->status != TID_NEW &&
tcon->status != TID_NEED_TCON)) {
if (tcon->status != TID_NEW &&
tcon->status != TID_NEED_TCON) {
spin_unlock(&tcon->tc_lock);
return -EHOSTDOWN;
}
if (tcon->status == TID_GOOD) {
spin_unlock(&tcon->tc_lock);
return 0;
}

10
fs/cifs/dfs.c
View File

@ -502,9 +502,13 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
/* only send once per connect */
spin_lock(&tcon->tc_lock);
if (tcon->ses->ses_status != SES_GOOD ||
(tcon->status != TID_NEW &&
tcon->status != TID_NEED_TCON)) {
if (tcon->status != TID_NEW &&
tcon->status != TID_NEED_TCON) {
spin_unlock(&tcon->tc_lock);
return -EHOSTDOWN;
}
if (tcon->status == TID_GOOD) {
spin_unlock(&tcon->tc_lock);
return 0;
}

2
fs/cifs/dfs_cache.c
View File

@ -1191,7 +1191,7 @@ static int __refresh_tcon(const char *path, struct cifs_tcon *tcon, bool force_r
}
spin_lock(&ipc->tc_lock);
if (ses->ses_status != SES_GOOD || ipc->status != TID_GOOD) {
if (ipc->status != TID_GOOD) {
spin_unlock(&ipc->tc_lock);
cifs_dbg(FYI, "%s: skip cache refresh due to disconnected ipc\n", __func__);
goto out;

8
fs/cifs/file.c
View File

@ -174,13 +174,13 @@ cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
struct list_head *tmp1;
/* only send once per connect */
spin_lock(&tcon->ses->ses_lock);
if ((tcon->ses->ses_status != SES_GOOD) || (tcon->status != TID_NEED_RECON)) {
spin_unlock(&tcon->ses->ses_lock);
spin_lock(&tcon->tc_lock);
if (tcon->status != TID_NEED_RECON) {
spin_unlock(&tcon->tc_lock);
return;
}
tcon->status = TID_IN_FILES_INVALIDATE;
spin_unlock(&tcon->ses->ses_lock);
spin_unlock(&tcon->tc_lock);
/* list all files open on tree connection and mark them invalid */
spin_lock(&tcon->open_file_lock);