Signed-off-by: Song Liu <songliubraving@xxxxxx>
---
Kill.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Kill.c b/Kill.c
index f2fdb85..9dc566b 100644
--- a/Kill.c
+++ b/Kill.c
@@ -29,6 +29,18 @@
#include "md_u.h"
#include "md_p.h"
+int KillR5LSuper(struct supertype *st, int fd)
+{
+ memset(st->r5l_sb, 0, LOG_BLOCK_SIZE);
+
+ if (lseek64(fd, 512 * (st->data_offset), 0) < 0LL)
+ return 1;
+ if (write(fd, st->r5l_sb, LOG_BLOCK_SIZE))
+ return 1;
+ fsync(fd);
+ return 0;
+}
+
int Kill(char *dev, struct supertype *st, int force, int verbose, int noexcl)
{
/*
@@ -60,8 +72,15 @@ int Kill(char *dev, struct supertype *st, int force, int verbose, int noexcl)
return 2;
}
st->ignore_hw_compat = 1;
+ st->data_offset = INVALID_SECTORS; /* load st->data_offset from sb for KillR5LSuper */
rv = st->ss->load_super(st, fd, dev);
if (rv == 0 || (force && rv >= 2)) {
+ if (st->r5l_sb) {
+ if (verbose > 0)
+ pr_err("zero write_cache superblock\n");
+ KillR5LSuper(st, fd);
+ }
+
st->ss->free_super(st);
st->ss->init_super(st, NULL, 0, "", NULL, NULL,
INVALID_SECTORS);
--
1.8.1
--
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