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[PATCH] ipmi: use refcount in message handler

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This patch is rather large, but it really can't be done in smaller chunks
easily and I believe it is an important change.  This has been out and tested
for a while in the latest IPMI driver release.  There are no functional
changes, just changes as necessary to convert the locking over (and a few
minor style updates).

The IPMI driver uses read/write locks to ensure that things exist while they
are in use.  This is bad from a number of points of view.  This patch removes
the rwlocks and uses refcounts and RCU lists to manage what the locks did.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Corey Minyard 2005-11-07 00:59:54 -08:00 committed by Linus Torvalds
parent f5b3db0017
commit 393d2cc354
2 changed files with 512 additions and 472 deletions
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979
drivers/char/ipmi/ipmi_msghandler.c
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File diff suppressed because it is too large Load Diff

5
include/linux/ipmi.h
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@ -256,10 +256,7 @@ struct ipmi_recv_msg
};
/* Allocate and free the receive message. */
static inline void ipmi_free_recv_msg(struct ipmi_recv_msg *msg)
{
msg->done(msg);
}
void ipmi_free_recv_msg(struct ipmi_recv_msg *msg);
struct ipmi_user_hndl
{