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23 October 2021, 00:29:24 UTC
Revision 23688bf4f830a89866fd0ed3501e342a7360fe4f authored by Junichi Nomura on 22 December 2015, 17:23:44 UTC, committed by Jens Axboe on 22 December 2015, 17:26:53 UTC 
block: ensure to split after potentially bouncing a bio
 
blk_queue_bio() does split then bounce, which makes the segment
counting based on pages before bouncing and could go wrong. Move
the split to after bouncing, like we do for blk-mq, and the we
fix the issue of having the bio count for segments be wrong.

Fixes: 54efd50bfd87 ("block: make generic_make_request handle arbitrarily sized bios")
Cc: stable@vger.kernel.org
Tested-by: Artem S. Tashkinov <t.artem@lycos.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
1 parent b587522
Raw File
Tip revision: 23688bf4f830a89866fd0ed3501e342a7360fe4f authored by Junichi Nomura on 22 December 2015, 17:23:44 UTC
block: ensure to split after potentially bouncing a bio
Tip revision: 23688bf
gcc-x86_64-has-stack-protector.sh 
#!/bin/sh

echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
if [ "$?" -eq "0" ] ; then
	echo y
else
	echo n
fi
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