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nbd: Drop BDS backpointer

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Before this patch, the "opaque" pointer in an NBD BDS points to a
BDRVNBDState, which contains an NbdClientSession object, which in turn
contains a pointer to the BDS. This pointer may become invalid due to
bdrv_swap(), so drop it, and instead pass the BDS directly to the
nbd-client.c functions which then retrieve the NbdClientSession object
from there.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1423256778-3340-2-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Max Reitz 2015-02-06 16:06:16 -05:00 • committed by Stefan Hajnoczi
parent cd2d554127
commit f53a829bb9
5 changed files with 85 additions and 92 deletions
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1
include/block/nbd.h
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@ -99,7 +99,6 @@ void nbd_export_close_all(void);
NBDClient *nbd_client_new(NBDExport *exp, int csock,
void (*close)(NBDClient *));
void nbd_client_close(NBDClient *client);
void nbd_client_get(NBDClient *client);
void nbd_client_put(NBDClient *client);