File bsc-1206791-04-blk_queue_split__no_present.patch of Package drbd

Overview Repositories Revisions Requests Users Attributes Meta

File bsc-1206791-04-blk_queue_split__no_present.patch of Package drbd (Revision 27e3dc909ac4c09b4039876f83990d04)

Currently displaying revision 27e3dc909ac4c09b4039876f83990d04 , Show latest

/* This patch related with below upstream kernel commit */

commit 5a97806f7dc069d9561d9930a2ae108700e222ab
Author: Christoph Hellwig <hch@lst.de>
Date:   Wed Jul 27 12:22:55 2022 -0400

block: change the blk_queue_split calling convention
    
    The double indirect bio leads to somewhat suboptimal code generation.
    Instead return the (original or split) bio, and make sure the
    request_queue arguments to the lower level helpers is passed after the
    bio to avoid constant reshuffling of the argument passing registers.
    
    Also give it and the helpers used to implement it more descriptive names.
    
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Link: https://lore.kernel.org/r/20220727162300.3089193-2-hch@lst.de
    Signed-off-by: Jens Axboe <axboe@kernel.dk>

---

diff -Nupr drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/cocci/bio_split_to_limits__yes_present.cocci b/drbd/drbd-kernel-compat/cocci/bio_split_to_limits__yes_present.cocci
--- drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/cocci/bio_split_to_limits__yes_present.cocci	1970-01-01 08:00:00.000000000 +0800
+++ b/drbd/drbd-kernel-compat/cocci/bio_split_to_limits__yes_present.cocci	2023-01-05 09:58:43.742081303 +0800
@@ -0,0 +1,5 @@
+@@
+expression b;
+@@
+- blk_queue_split(&b)
++ bio_split_to_limits(b)
diff -Nupr drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/gen_patch_names.c b/drbd/drbd-kernel-compat/gen_patch_names.c
--- drbd-9.0.30~1+git.8e9c0812/drbd/drbd-kernel-compat/gen_patch_names.c	2023-01-05 09:02:53.371032160 +0800
+++ b/drbd/drbd-kernel-compat/gen_patch_names.c	2023-01-05 09:59:24.921772632 +0800
@@ -92,8 +92,13 @@ int main(int argc, char **argv)
 	patch(1, "timer_setup", true, false,
 	      COMPAT_HAVE_TIMER_SETUP, "present");
 
-#if defined(COMPAT_HAVE_BLK_QUEUE_SPLIT_BIO)
-	/* "modern" version (>=5.9) with only 1 argument. nothing to do */
+#if defined(COMPAT_HAVE_BIO_SPLIT_TO_LIMITS)
+	/* since 5a97806f7dc069d9561d9930a2ae108700e222ab, blk_queue_split_bio
+	 * change to bio_split_to_limits */
+	patch(1, "bio_split_to_limits", false, true,
+	      YES, "present");
+#elif defined(COMPAT_HAVE_BLK_QUEUE_SPLIT_BIO)
+	/* "modern" version (>=5.9 && < v6.0-rc1) with only 1 argument. nothing to do */
 #elif defined(COMPAT_HAVE_BLK_QUEUE_SPLIT_Q_BIO)
 	/* older version with 2 arguments */
 	patch(1, "blk_queue_split", false, true,
diff -Nupr a/drbd/drbd-kernel-compat/tests/have_bio_split_to_limits.c b/drbd/drbd-kernel-compat/tests/have_bio_split_to_limits.c
--- a/drbd/drbd-kernel-compat/tests/have_bio_split_to_limits.c	1970-01-01 08:00:00.000000000 +0800
+++ b/drbd/drbd-kernel-compat/tests/have_bio_split_to_limits.c	2023-01-05 10:08:37.081595899 +0800
@@ -0,0 +1,9 @@
+/* { "version": "v5.9", "commit": "f695ca3886ce72b027af7aa6040cd420cae2088c", "comment": "In 5.9, blk_queue_split lost its first parameter, since the bio can be derived from the queue", "author": "Christoph Hellwig <hch@lst.de>", "date": "Wed Jul 1 10:59:39 2020 +0200" } */
+
+
+#include <linux/blkdev.h>
+
+void dummy(struct bio *bio)
+{
+	bio_split_to_limits(bio);
+}

Places

File bsc-1206791-04-blk_queue_split__no_present.patch of Package drbd (Revision 27e3dc909ac4c09b4039876f83990d04)

Places