From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/md/dm-flakey.c | 68 ++++++++++++++++++++--------------
1 files changed, 40 insertions(+), 28 deletions(-)
diff --git a/kernel/drivers/md/dm-flakey.c b/kernel/drivers/md/dm-flakey.c
index 2fcf62f..aeea538 100644
--- a/kernel/drivers/md/dm-flakey.c
+++ b/kernel/drivers/md/dm-flakey.c
@@ -124,9 +124,9 @@
* Direction r or w?
*/
arg_name = dm_shift_arg(as);
- if (!strcasecmp(arg_name, "w"))
+ if (arg_name && !strcasecmp(arg_name, "w"))
fc->corrupt_bio_rw = WRITE;
- else if (!strcasecmp(arg_name, "r"))
+ else if (arg_name && !strcasecmp(arg_name, "r"))
fc->corrupt_bio_rw = READ;
else {
ti->error = "Invalid corrupt bio direction (r or w)";
@@ -280,7 +280,7 @@
struct flakey_c *fc = ti->private;
bio_set_dev(bio, fc->dev->bdev);
- if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET)
+ if (bio_sectors(bio) || op_is_zone_mgmt(bio_op(bio)))
bio->bi_iter.bi_sector =
flakey_map_sector(ti, bio->bi_iter.bi_sector);
}
@@ -301,8 +301,11 @@
*/
bio_for_each_segment(bvec, bio, iter) {
if (bio_iter_len(bio, iter) > corrupt_bio_byte) {
- char *segment = (page_address(bio_iter_page(bio, iter))
- + bio_iter_offset(bio, iter));
+ char *segment;
+ struct page *page = bio_iter_page(bio, iter);
+ if (unlikely(page == ZERO_PAGE(0)))
+ break;
+ segment = (page_address(page) + bio_iter_offset(bio, iter));
segment[corrupt_bio_byte] = fc->corrupt_bio_value;
DMDEBUG("Corrupting data bio=%p by writing %u to byte %u "
"(rw=%c bi_opf=%u bi_sector=%llu size=%u)\n",
@@ -322,12 +325,7 @@
struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
pb->bio_submitted = false;
- /* Do not fail reset zone */
- if (bio_op(bio) == REQ_OP_ZONE_RESET)
- goto map_bio;
-
- /* We need to remap reported zones, so remember the BIO iter */
- if (bio_op(bio) == REQ_OP_ZONE_REPORT)
+ if (op_is_zone_mgmt(bio_op(bio)))
goto map_bio;
/* Are we alive ? */
@@ -364,9 +362,11 @@
/*
* Corrupt matching writes.
*/
- if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == WRITE)) {
- if (all_corrupt_bio_flags_match(bio, fc))
- corrupt_bio_data(bio, fc);
+ if (fc->corrupt_bio_byte) {
+ if (fc->corrupt_bio_rw == WRITE) {
+ if (all_corrupt_bio_flags_match(bio, fc))
+ corrupt_bio_data(bio, fc);
+ }
goto map_bio;
}
@@ -388,22 +388,18 @@
struct flakey_c *fc = ti->private;
struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
- if (bio_op(bio) == REQ_OP_ZONE_RESET)
+ if (op_is_zone_mgmt(bio_op(bio)))
return DM_ENDIO_DONE;
-
- if (bio_op(bio) == REQ_OP_ZONE_REPORT) {
- dm_remap_zone_report(ti, bio, fc->start);
- return DM_ENDIO_DONE;
- }
if (!*error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
- if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
- all_corrupt_bio_flags_match(bio, fc)) {
- /*
- * Corrupt successful matching READs while in down state.
- */
- corrupt_bio_data(bio, fc);
-
+ if (fc->corrupt_bio_byte) {
+ if ((fc->corrupt_bio_rw == READ) &&
+ all_corrupt_bio_flags_match(bio, fc)) {
+ /*
+ * Corrupt successful matching READs while in down state.
+ */
+ corrupt_bio_data(bio, fc);
+ }
} else if (!test_bit(DROP_WRITES, &fc->flags) &&
!test_bit(ERROR_WRITES, &fc->flags)) {
/*
@@ -468,6 +464,19 @@
return 0;
}
+#ifdef CONFIG_BLK_DEV_ZONED
+static int flakey_report_zones(struct dm_target *ti,
+ struct dm_report_zones_args *args, unsigned int nr_zones)
+{
+ struct flakey_c *fc = ti->private;
+ sector_t sector = flakey_map_sector(ti, args->next_sector);
+
+ args->start = fc->start;
+ return blkdev_report_zones(fc->dev->bdev, sector, nr_zones,
+ dm_report_zones_cb, args);
+}
+#endif
+
static int flakey_iterate_devices(struct dm_target *ti, iterate_devices_callout_fn fn, void *data)
{
struct flakey_c *fc = ti->private;
@@ -479,7 +488,10 @@
.name = "flakey",
.version = {1, 5, 0},
#ifdef CONFIG_BLK_DEV_ZONED
- .features = DM_TARGET_ZONED_HM,
+ .features = DM_TARGET_ZONED_HM | DM_TARGET_PASSES_CRYPTO,
+ .report_zones = flakey_report_zones,
+#else
+ .features = DM_TARGET_PASSES_CRYPTO,
#endif
.module = THIS_MODULE,
.ctr = flakey_ctr,
--
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