ublk: setup ublk_io correctly in case of ublk_get_data() failure - linux-rng

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author	Ming Lei <ming.lei@redhat.com>	2025-06-24 18:41:21 +0800
committer	Jens Axboe <axboe@kernel.dk>	2025-06-24 20:45:31 -0600
commit	4c8a951787ffc4b61a547db9866196104971b5fd (patch)
tree	edfd040d6c9cf64b210c2753b475c42ab52ea542 /arch/mips/include/uapi/ssh:/git@git.zx2c4.com/git:/git.zx2c4.com
parent	ublk: update UBLK_F_SUPPORT_ZERO_COPY comment in UAPI header (diff)

ublk: setup ublk_io correctly in case of ublk_get_data() failure

If ublk_get_data() fails, -EIOCBQUEUED is returned and the current command becomes ASYNC. And the only reason is that mapping data can't move on, because of no enough pages or pending signal, then the current ublk request has to be requeued. Once the request need to be requeued, we have to setup `ublk_io` correctly, including io->cmd and flags, otherwise the request may not be forwarded to ublk server successfully. Fixes: 9810362a57cb ("ublk: don't call ublk_dispatch_req() for NEED_GET_DATA") Reported-by: Changhui Zhong <czhong@redhat.com> Closes: https://lore.kernel.org/linux-block/CAGVVp+VN9QcpHUz_0nasFf5q9i1gi8H8j-G-6mkBoqa3TyjRHA@mail.gmail.com/ Signed-off-by: Ming Lei <ming.lei@redhat.com> Tested-by: Changhui Zhong <czhong@redhat.com> Link: https://lore.kernel.org/r/20250624104121.859519-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>

Diffstat (limited to 'arch/mips/include/uapi/ssh:/git@git.zx2c4.com/git:/git.zx2c4.com')

0 files changed, 0 insertions, 0 deletions

#!/bin/sh # # arch/parisc/install.sh, derived from arch/i386/boot/install.sh # # This file is subject to the terms and conditions of the GNU General Public # License. See the file "COPYING" in the main directory of this archive # for more details. # # Copyright (C) 1995 by Linus Torvalds # # Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin # # "make install" script for i386 architecture # # Arguments: # $1 - kernel version # $2 - kernel image file # $3 - kernel map file # $4 - default install path (blank if root directory) # verify () { if [ ! -f "$1" ]; then echo "" 1>&2 echo " *** Missing file: $1" 1>&2 echo ' *** You need to run "make" before "make install".' 1>&2 echo "" 1>&2 exit 1 fi } # Make sure the files actually exist verify "$2" verify "$3" # User may have a custom install script if [ -n "${INSTALLKERNEL}" ]; then if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi fi # Default install if [ "$(basename $2)" = "zImage" ]; then # Compressed install echo "Installing compressed kernel" base=vmlinuz else # Normal install echo "Installing normal kernel" base=vmlinux fi if [ -f $4/$base-$1 ]; then mv $4/$base-$1 $4/$base-$1.old fi cat $2 > $4/$base-$1 # Install system map file if [ -f $4/System.map-$1 ]; then mv $4/System.map-$1 $4/System.map-$1.old fi cp $3 $4/System.map-$1


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