pstore: pass allocated memory region back to caller

[pandora-kernel.git] / include / linux / pstore.h

diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index ea56732..2ca8cde 100644 (file)
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -35,10 +35,12 @@ struct pstore_info {
        spinlock_t      buf_lock;       /* serialize access to 'buf' */
        char            *buf;
        size_t          bufsize;
+       struct mutex    read_mutex;     /* serialize open/read/close */
        int             (*open)(struct pstore_info *psi);
        int             (*close)(struct pstore_info *psi);
        ssize_t         (*read)(u64 *id, enum pstore_type_id *type,
-                       struct timespec *time, struct pstore_info *psi);
+                       struct timespec *time, char **buf,
+                       struct pstore_info *psi);
        int             (*write)(enum pstore_type_id type, u64 *id,
                        unsigned int part, size_t size, struct pstore_info *psi);
        int             (*erase)(enum pstore_type_id type, u64 id,