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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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925ce689bb
All these files use the big kernel lock in a trivial
way to serialize their private file operations,
typically resulting from an earlier semi-automatic
pushdown from VFS.
None of these drivers appears to want to lock against
other code, and they all use the BKL as the top-level
lock in their file operations, meaning that there
is no lock-order inversion problem.
Consequently, we can remove the BKL completely,
replacing it with a per-file mutex in every case.
Using a scripted approach means we can avoid
typos.
file=$1
name=$2
if grep -q lock_kernel ${file} ; then
if grep -q 'include.*linux.mutex.h' ${file} ; then
sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
else
sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
fi
sed -i ${file} \
-e "/^#include.*linux.mutex.h/,$ {
1,/^\(static\|int\|long\)/ {
/^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);
} }" \
-e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
-e '/[ ]*cycle_kernel_lock();/d'
else
sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \
-e '/cycle_kernel_lock()/d'
fi
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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| .. | ||
| sisusbvga | ||
| adutux.c | ||
| appledisplay.c | ||
| cypress_cy7c63.c | ||
| cytherm.c | ||
| emi26.c | ||
| emi62.c | ||
| ftdi-elan.c | ||
| idmouse.c | ||
| iowarrior.c | ||
| isight_firmware.c | ||
| Kconfig | ||
| ldusb.c | ||
| legousbtower.c | ||
| Makefile | ||
| rio500.c | ||
| rio500_usb.h | ||
| trancevibrator.c | ||
| usb_u132.h | ||
| usblcd.c | ||
| usbled.c | ||
| usbsevseg.c | ||
| usbtest.c | ||
| uss720.c | ||