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FAILED: patch "[PATCH] dm integrity: fix flush with external metadata device" failed to apply to 5.4-stable tree

PATCH [email protected] 1 participant 1 message Jan 17, 2021

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Stable branch Device mapper
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#0 lore raw

The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 9b5948267adc9e689da609eb61cf7ed49cae5fa8 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <[email protected]>
Date: Fri, 8 Jan 2021 11:15:56 -0500
Subject: [PATCH] dm integrity: fix flush with external metadata device

With external metadata device, flush requests are not passed down to the data device.

Fix this by submitting the flush request in dm_integrity_flush_buffers. In order to not degrade performance, we overlap the data device flush with the metadata device flush.

Reported-by Lukas Straub <[email protected]>
Signed-off-by Mikulas Patocka <[email protected]>
Cc [email protected]
Signed-off-by Mike Snitzer <[email protected]>
drivers/md/dm-bufio.c +6 -0
index 9c1a86bde658..fce4cbf9529d 100644
@@ -1534,6 +1534,12 @@ sector_t dm_bufio_get_device_size(struct dm_bufio_client *c)
 }
 EXPORT_SYMBOL_GPL(dm_bufio_get_device_size);
 
+struct dm_io_client *dm_bufio_get_dm_io_client(struct dm_bufio_client *c)
+{
+	return c->dm_io;
+}
+EXPORT_SYMBOL_GPL(dm_bufio_get_dm_io_client);
+
 sector_t dm_bufio_get_block_number(struct dm_buffer *b)
 {
 	return b->block;
drivers/md/dm-integrity.c +49 -11

116 lines not on this page · raw message

include/linux/dm-bufio.h +1 -0
index 29d255fdd5d6..90bd558a17f5 100644
@@ -150,6 +150,7 @@ void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned n);
 
 unsigned dm_bufio_get_block_size(struct dm_bufio_client *c);
 sector_t dm_bufio_get_device_size(struct dm_bufio_client *c);
+struct dm_io_client *dm_bufio_get_dm_io_client(struct dm_bufio_client *c);
 sector_t dm_bufio_get_block_number(struct dm_buffer *b);
 void *dm_bufio_get_block_data(struct dm_buffer *b);
 void *dm_bufio_get_aux_data(struct dm_buffer *b);