pstore/ram: Convert to write_buf callback

Don't use pstore.buf directly, instead convert the code to write_buf callback
which passes a pointer to a buffer as an argument.

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 9 insertions, 8 deletions

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index b39aebbaeb89..74f4111bd0da 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -170,11 +170,12 @@ static size_t ramoops_write_kmsg_hdr(struct persistent_ram_zone *prz)
         return len;
 }
 
-static int ramoops_pstore_write(enum pstore_type_id type,
-                                enum kmsg_dump_reason reason,
-                                u64 *id,
-                                unsigned int part,
-                                size_t size, struct pstore_info *psi)
+
+static int ramoops_pstore_write_buf(enum pstore_type_id type,
+                                    enum kmsg_dump_reason reason,
+                                    u64 *id, unsigned int part,
+                                    const char *buf, size_t size,
+                                    struct pstore_info *psi)
 {
         struct ramoops_context *cxt = psi->data;
         struct persistent_ram_zone *prz = cxt->przs[cxt->dump_write_cnt];
@@ -183,7 +184,7 @@ static int ramoops_pstore_write(enum pstore_type_id type,
         if (type == PSTORE_TYPE_CONSOLE) {
                 if (!cxt->cprz)
                         return -ENOMEM;
-                persistent_ram_write(cxt->cprz, cxt->pstore.buf, size);
+                persistent_ram_write(cxt->cprz, buf, size);
                 return 0;
         }
 
@@ -212,7 +213,7 @@ static int ramoops_pstore_write(enum pstore_type_id type,
         hlen = ramoops_write_kmsg_hdr(prz);
         if (size + hlen > prz->buffer_size)
                 size = prz->buffer_size - hlen;
-        persistent_ram_write(prz, cxt->pstore.buf, size);
+        persistent_ram_write(prz, buf, size);
 
         cxt->dump_write_cnt = (cxt->dump_write_cnt + 1) % cxt->max_dump_cnt;
 
@@ -250,7 +251,7 @@ static struct ramoops_context oops_cxt = {
                 .name   = "ramoops",
                 .open   = ramoops_pstore_open,
                 .read   = ramoops_pstore_read,
-                .write  = ramoops_pstore_write,
+                .write_buf      = ramoops_pstore_write_buf,
                 .erase  = ramoops_pstore_erase,
         },
 };