Revision dd12f48d4e8774415b528d3991ae47c28f26e1ac authored by Bhavesh P. Davda on 17 August 2005, 18:26:33 UTC, committed by Linus Torvalds on 17 August 2005, 19:52:04 UTC
This bug is quite subtle and only happens in a very interesting situation where a real-time threaded process is in the middle of a coredump when someone whacks it with a SIGKILL. However, this deadlock leaves the system pretty hosed and you have to reboot to recover. Not good for real-time priority-preemption applications like our telephony application, with 90+ real-time (SCHED_FIFO and SCHED_RR) processes, many of them multi-threaded, interacting with each other for high volume call processing. Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent ade6648
compress.c
/*
* Cryptographic API.
*
* Compression operations.
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
*/
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/errno.h>
#include <asm/scatterlist.h>
#include <linux/string.h>
#include "internal.h"
static int crypto_compress(struct crypto_tfm *tfm,
const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen)
{
return tfm->__crt_alg->cra_compress.coa_compress(crypto_tfm_ctx(tfm),
src, slen, dst,
dlen);
}
static int crypto_decompress(struct crypto_tfm *tfm,
const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen)
{
return tfm->__crt_alg->cra_compress.coa_decompress(crypto_tfm_ctx(tfm),
src, slen, dst,
dlen);
}
int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
{
return flags ? -EINVAL : 0;
}
int crypto_init_compress_ops(struct crypto_tfm *tfm)
{
int ret = 0;
struct compress_tfm *ops = &tfm->crt_compress;
ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
if (ret)
goto out;
ops->cot_compress = crypto_compress;
ops->cot_decompress = crypto_decompress;
out:
return ret;
}
void crypto_exit_compress_ops(struct crypto_tfm *tfm)
{
tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
}
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