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cifs: smbd: Invalidate and deregister memory registration on re-send for direct I/O 

On re-send, there might be a reconnect and all prevoius memory registrations
need to be invalidated and deregistered.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Long Li 2019-10-15 22:54:50 +00:00 committed by Steve French
parent 14cc639c17
commit b7a55bbd6d
1 changed files with 18 additions and 2 deletions
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20
fs/cifs/file.c
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@ -2803,9 +2803,17 @@ cifs_resend_wdata(struct cifs_writedata *wdata, struct list_head *wdata_list,
if (!rc) {
if (wdata->cfile->invalidHandle)
rc = -EAGAIN;
else
else {
#ifdef CONFIG_CIFS_SMB_DIRECT
if (wdata->mr) {
wdata->mr->need_invalidate = true;
smbd_deregister_mr(wdata->mr);
wdata->mr = NULL;
}
#endif
rc = server->ops->async_writev(wdata,
cifs_uncached_writedata_release);
}
}
/* If the write was successfully sent, we are done */
@ -3528,8 +3536,16 @@ static int cifs_resend_rdata(struct cifs_readdata *rdata,
if (!rc) {
if (rdata->cfile->invalidHandle)
rc = -EAGAIN;
else
else {
#ifdef CONFIG_CIFS_SMB_DIRECT
if (rdata->mr) {
rdata->mr->need_invalidate = true;
smbd_deregister_mr(rdata->mr);
rdata->mr = NULL;
}
#endif
rc = server->ops->async_readv(rdata);
}
}
/* If the read was successfully sent, we are done */