15fd0cd9a2
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> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net> |
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.. | ||
lmc | ||
.gitignore | ||
Kconfig | ||
Makefile | ||
c101.c | ||
cosa.c | ||
cosa.h | ||
cycx_drv.c | ||
cycx_main.c | ||
cycx_x25.c | ||
dlci.c | ||
dscc4.c | ||
farsync.c | ||
farsync.h | ||
hd64570.c | ||
hd64570.h | ||
hd64572.c | ||
hd64572.h | ||
hdlc.c | ||
hdlc_cisco.c | ||
hdlc_fr.c | ||
hdlc_ppp.c | ||
hdlc_raw.c | ||
hdlc_raw_eth.c | ||
hdlc_x25.c | ||
hostess_sv11.c | ||
ixp4xx_hss.c | ||
lapbether.c | ||
n2.c | ||
pc300-falc-lh.h | ||
pc300.h | ||
pc300_drv.c | ||
pc300_tty.c | ||
pc300too.c | ||
pci200syn.c | ||
sbni.c | ||
sbni.h | ||
sdla.c | ||
sealevel.c | ||
wanxl.c | ||
wanxl.h | ||
wanxlfw.S | ||
wanxlfw.inc_shipped | ||
x25_asy.c | ||
x25_asy.h | ||
z85230.c | ||
z85230.h |