]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] v9fs: fix corner cases when flushing request
authorLatchesar Ionkov <lucho@ionkov.net>
Fri, 3 Feb 2006 11:04:20 +0000 (03:04 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Fri, 3 Feb 2006 16:32:06 +0000 (08:32 -0800)
commit034b91a3b66cf9d2983ac45f73162395c0936c36
treed8d731e5ef3dbe3cea129c48d5c1bc245414f189
parent05818a004a84951fd383694f3b35d89eb49fa308
[PATCH] v9fs: fix corner cases when flushing request

When v9fs_mux_rpc sends a 9P message, it may be put in the queue of unsent
request.  If the user process receives a signal, v9fs_mux_rpc sets the
request error to ERREQFLUSH and assigns NULL to request's send message.  If
the message was still in the unsent queue, v9fs_write_work would produce an
oops while processing it.

The patch makes sure that requests that are being flushed are moved to the
pending requests queue safely.

If a request is being flushed, don't remove it from the list of pending
requests even if it receives a reply before the flush is acknoledged.  The
request will be removed during from the Rflush handler (v9fs_mux_flush_cb).

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fs/9p/mux.c