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CIFS: Fix fast lease break after open problem

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Now we walk though cifsFileInfo's list for every incoming lease
break and look for an equivalent there. That approach misses lease
breaks that come just after an open response - we don't have time
to populate new cifsFileInfo structure to the list. Fix this by
adding new list of pending opens and look for a lease there if we
didn't find it in the list of cifsFileInfo structures.

Signed-off-by: Pavel Shilovsky <pshilovsky@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky
2012-09-19 06:22:45 -07:00
committed by Steve French
parent 0822f51426
commit 233839b1df
7 changed files with 158 additions and 10 deletions
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fs/cifs/connect.c
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@@ -2645,6 +2645,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
tcon->retry = volume_info->retry;
tcon->nocase = volume_info->nocase;
tcon->local_lease = volume_info->local_lease;
INIT_LIST_HEAD(&tcon->pending_opens);
spin_lock(&cifs_tcp_ses_lock);
list_add(&tcon->tcon_list, &ses->tcon_list);