From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/drivers/md/dm-log-writes.c | 23 ++++++++++++++++++++---
1 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/kernel/drivers/md/dm-log-writes.c b/kernel/drivers/md/dm-log-writes.c
index e549392..e3d35c6 100644
--- a/kernel/drivers/md/dm-log-writes.c
+++ b/kernel/drivers/md/dm-log-writes.c
@@ -40,7 +40,7 @@
*
* Would result in the log looking like this:
*
- * c,a,flush,fuad,b,<other writes>,<next flush>
+ * c,a,b,flush,fuad,<other writes>,<next flush>
*
* This is meant to help expose problems where file systems do not properly wait
* on data being written before invoking a FLUSH. FUA bypasses cache so once it
@@ -127,7 +127,7 @@
char *data;
u32 datalen;
struct list_head list;
- struct bio_vec vecs[0];
+ struct bio_vec vecs[];
};
struct per_bio_data {
@@ -699,7 +699,7 @@
if (discard_bio)
alloc_size = sizeof(struct pending_block);
else
- alloc_size = sizeof(struct pending_block) + sizeof(struct bio_vec) * bio_segments(bio);
+ alloc_size = struct_size(block, vecs, bio_segments(bio));
block = kzalloc(alloc_size, GFP_NOIO);
if (!block) {
@@ -994,10 +994,26 @@
return dax_copy_to_iter(lc->dev->dax_dev, pgoff, addr, bytes, i);
}
+static int log_writes_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff,
+ size_t nr_pages)
+{
+ int ret;
+ struct log_writes_c *lc = ti->private;
+ sector_t sector = pgoff * PAGE_SECTORS;
+
+ ret = bdev_dax_pgoff(lc->dev->bdev, sector, nr_pages << PAGE_SHIFT,
+ &pgoff);
+ if (ret)
+ return ret;
+ return dax_zero_page_range(lc->dev->dax_dev, pgoff,
+ nr_pages << PAGE_SHIFT);
+}
+
#else
#define log_writes_dax_direct_access NULL
#define log_writes_dax_copy_from_iter NULL
#define log_writes_dax_copy_to_iter NULL
+#define log_writes_dax_zero_page_range NULL
#endif
static struct target_type log_writes_target = {
@@ -1016,6 +1032,7 @@
.direct_access = log_writes_dax_direct_access,
.dax_copy_from_iter = log_writes_dax_copy_from_iter,
.dax_copy_to_iter = log_writes_dax_copy_to_iter,
+ .dax_zero_page_range = log_writes_dax_zero_page_range,
};
static int __init dm_log_writes_init(void)
--
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