pstore: Add extra context for writes and erases
EFI only provides small amounts of individual storage, and conventionally
puts metadata in the storage variable name. Rather than add a metadata
header to the (already limited) variable storage, it's easier for us to
modify pstore to pass all the information we need to construct a unique
variable name to the appropriate functions.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 221c04e..163bb40 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -78,7 +78,7 @@
oopscount++;
while (total < kmsg_bytes) {
dst = psinfo->buf;
- hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, part++);
+ hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, part);
size = psinfo->bufsize - hsize;
dst += hsize;
@@ -94,8 +94,8 @@
memcpy(dst, s1 + s1_start, l1_cpy);
memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy);
- id = psinfo->write(PSTORE_TYPE_DMESG, hsize + l1_cpy + l2_cpy,
- psinfo);
+ id = psinfo->write(PSTORE_TYPE_DMESG, part,
+ hsize + l1_cpy + l2_cpy, psinfo);
if (reason == KMSG_DUMP_OOPS && pstore_is_mounted())
pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id,
psinfo->buf, hsize + l1_cpy + l2_cpy,
@@ -103,6 +103,7 @@
l1 -= l1_cpy;
l2 -= l2_cpy;
total += l1_cpy + l2_cpy;
+ part++;
}
mutex_unlock(&psinfo->buf_mutex);
}
@@ -197,7 +198,7 @@
mutex_lock(&psinfo->buf_mutex);
memcpy(psinfo->buf, buf, size);
- id = psinfo->write(type, size, psinfo);
+ id = psinfo->write(type, 0, size, psinfo);
if (pstore_is_mounted())
pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id, psinfo->buf,
size, CURRENT_TIME, psinfo);