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@xxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
fs/pstore/ram_core.c | 11 ++++++++---
include/linux/pstore_ram.h | 1 +
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c
index f6650d1..c5fbdbb 100644
--- a/fs/pstore/ram_core.c
+++ b/fs/pstore/ram_core.c
@@ -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:
diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h
index 4491e8f..3b823d4 100644
--- a/include/linux/pstore_ram.h
+++ b/include/linux/pstore_ram.h
@@ -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);
--
1.7.9.2
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