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pstore/ram_core: Factor persistent_ram_zap() out of post_init()

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A handy function that we will use outside of ram_core soon. But
so far just factor it out and start using it in post_init().

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anton Vorontsov 2012-05-26 06:07:51 -07:00 committed by Greg Kroah-Hartman
parent 25b63da647
commit fce3979304
2 changed files with 9 additions and 3 deletions
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11
fs/pstore/ram_core.c
View File

@ -320,6 +320,13 @@ void persistent_ram_free_old(struct persistent_ram_zone *prz)
prz->old_log_size = 0;
}
void persistent_ram_zap(struct persistent_ram_zone *prz)
{
atomic_set(&prz->buffer->start, 0);
atomic_set(&prz->buffer->size, 0);
persistent_ram_update_header_ecc(prz);
}
static void *persistent_ram_vmap(phys_addr_t start, size_t size)
{
struct page **pages;
@ -414,8 +421,7 @@ static int __init persistent_ram_post_init(struct persistent_ram_zone *prz, bool
}
prz->buffer->sig = PERSISTENT_RAM_SIG;
atomic_set(&prz->buffer->start, 0);
atomic_set(&prz->buffer->size, 0);
persistent_ram_zap(prz);
return 0;
}
@ -450,7 +456,6 @@ struct persistent_ram_zone * __init persistent_ram_new(phys_addr_t start,
goto err;
persistent_ram_post_init(prz, ecc);
persistent_ram_update_header_ecc(prz);
return prz;
err:

1
include/linux/pstore_ram.h
View File

@ -69,6 +69,7 @@ struct persistent_ram_zone * __init persistent_ram_new(phys_addr_t start,
size_t size,
bool ecc);
void persistent_ram_free(struct persistent_ram_zone *prz);
void persistent_ram_zap(struct persistent_ram_zone *prz);
struct persistent_ram_zone *persistent_ram_init_ringbuffer(struct device *dev,
bool ecc);