3.16.72-rc1 review patch. If anyone has any objections, please let me know.
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From: Frank Sorenson sorenson@redhat.com
commit 652727bbe1b17993636346716ae5867627793647 upstream.
A path-based rename returning EBUSY will incorrectly try opening the file with a cifs (NT Create AndX) operation on an smb2+ mount, which causes the server to force a session close.
If the mount is smb2+, skip the fallback.
Signed-off-by: Frank Sorenson sorenson@redhat.com Signed-off-by: Steve French stfrench@microsoft.com Reviewed-by: Ronnie Sahlberg lsahlber@redhat.com Signed-off-by: Ben Hutchings ben@decadent.org.uk --- fs/cifs/inode.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1627,6 +1627,10 @@ cifs_do_rename(const unsigned int xid, s if (rc == 0 || rc != -EBUSY) goto do_rename_exit;
+ /* Don't fall back to using SMB on SMB 2+ mount */ + if (server->vals->protocol_id != 0) + goto do_rename_exit; + /* open-file renames don't work across directories */ if (to_dentry->d_parent != from_dentry->d_parent) goto do_rename_exit;