#include <linux/errno.h>
#include <linux/kmsg_dump.h>
#include <linux/mutex.h>
-#include <linux/spinlock.h>
+#include <linux/semaphore.h>
#include <linux/time.h>
#include <linux/types.h>
* @owner: module which is repsonsible for this backend driver
* @name: name of the backend driver
*
- * @buf_lock: spinlock to serialize access to @buf
+ * @buf_lock: semaphore to serialize access to @buf
* @buf: preallocated crash dump buffer
- * @bufsize: size of @buf available for crash dump writes
+ * @bufsize: size of @buf available for crash dump bytes (must match
+ * smallest number of bytes available for writing to a
+ * backend entry, since compressed bytes don't take kindly
+ * to being truncated)
*
* @read_mutex: serializes @open, @read, @close, and @erase callbacks
* @flags: bitfield of frontends the backend can accept writes for
struct module *owner;
char *name;
- spinlock_t buf_lock;
+ struct semaphore buf_lock;
char *buf;
size_t bufsize;
extern int pstore_register(struct pstore_info *);
extern void pstore_unregister(struct pstore_info *);
-extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason);
struct pstore_ftrace_record {
unsigned long ip;