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pstore: Add new argument 'compressed' in pstore write callback

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Addition of new argument 'compressed' in the write call back will
help the backend to know if the data passed from pstore is compressed
or not (In case where compression fails.). If compressed, the backend
can add a tag indicating the data is compressed while writing to
persistent store.

Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Aruna Balakrishnaiah
2013-08-16 13:52:47 -07:00
committed by Tony Luck
parent a3a5e94131
commit b3b515bbd6
6 changed files with 12 additions and 11 deletions
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7
fs/pstore/platform.c
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@@ -149,6 +149,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
unsigned long size;
int hsize;
size_t len;
bool compressed = false;
dst = psinfo->buf;
hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, part);
@@ -159,7 +160,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
break;
ret = psinfo->write(PSTORE_TYPE_DMESG, reason, &id, part,
oopscount, hsize, hsize + len, psinfo);
oopscount, compressed, hsize + len, psinfo);
if (ret == 0 && reason == KMSG_DUMP_OOPS && pstore_is_mounted())
pstore_new_entry = 1;
@@ -221,10 +222,10 @@ static void pstore_register_console(void) {}
static int pstore_write_compat(enum pstore_type_id type,
enum kmsg_dump_reason reason,
u64 *id, unsigned int part, int count,
size_t hsize, size_t size,
bool compressed, size_t size,
struct pstore_info *psi)
{
return psi->write_buf(type, reason, id, part, psinfo->buf, hsize,
return psi->write_buf(type, reason, id, part, psinfo->buf, compressed,
size, psi);
}