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authorAruna Balakrishnaiah <aruna@linux.vnet.ibm.com>2013-08-16 13:52:47 -0700
committerTony Luck <tony.luck@intel.com>2013-08-19 10:18:10 -0700
commitb3b515bbd689ba3937cac2dd3fc55057f8c50329 (patch)
tree19cca07f50fb439d6e7d678516db2a9568b3e7ef /fs/pstore
parenta3a5e94131d96ecdee7b1873a9d6215dc0ea7fff (diff)
downloadop-kernel-dev-b3b515bbd689ba3937cac2dd3fc55057f8c50329.zip
op-kernel-dev-b3b515bbd689ba3937cac2dd3fc55057f8c50329.tar.gz
pstore: Add new argument 'compressed' in pstore write callback
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>
Diffstat (limited to 'fs/pstore')
-rw-r--r--fs/pstore/platform.c7
-rw-r--r--fs/pstore/ram.c2
2 files changed, 5 insertions, 4 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 422962a..20fa686 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -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);
}
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index a6119f9..fe7188f 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -196,7 +196,7 @@ static int notrace ramoops_pstore_write_buf(enum pstore_type_id type,
enum kmsg_dump_reason reason,
u64 *id, unsigned int part,
const char *buf,
- size_t hsize, size_t size,
+ bool compressed, size_t size,
struct pstore_info *psi)
{
struct ramoops_context *cxt = psi->data;
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