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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-08-06 20:28:44 +1000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2006-09-21 11:16:29 +1000 |
| commit | 6521f30273fbec65146a0f16de74b7b402b0f7b0 (patch) | |
| tree | 1e664f6c1a7c960c60c4cae01585933029f81a5f /crypto/proc.c | |
| parent | 72fa491912689ca69dd15f4266945d2c2f2819f8 (diff) | |
| download | lwn-6521f30273fbec65146a0f16de74b7b402b0f7b0.tar.gz lwn-6521f30273fbec65146a0f16de74b7b402b0f7b0.zip | |
[CRYPTO] api: Add crypto_alg reference counting
Up until now we've relied on module reference counting to ensure that the
crypto_alg structures don't disappear from under us. This was good enough
as long as each crypto_alg came from exactly one module.
However, with parameterised crypto algorithms a crypto_alg object may need
two or more modules to operate. This means that we need to count the
references to the crypto_alg object directly.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'crypto/proc.c')
| -rw-r--r-- | crypto/proc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/proc.c b/crypto/proc.c index c0a5dd7ce2cc..8543b7a157d6 100644 --- a/crypto/proc.c +++ b/crypto/proc.c @@ -12,6 +12,8 @@ * any later version. * */ + +#include <asm/atomic.h> #include <linux/init.h> #include <linux/crypto.h> #include <linux/rwsem.h> @@ -54,6 +56,7 @@ static int c_show(struct seq_file *m, void *p) seq_printf(m, "driver : %s\n", alg->cra_driver_name); seq_printf(m, "module : %s\n", module_name(alg->cra_module)); seq_printf(m, "priority : %d\n", alg->cra_priority); + seq_printf(m, "refcnt : %d\n", atomic_read(&alg->cra_refcnt)); switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_CIPHER: |