From 2a48fc0ab24241755dc93bfd4f01d68efab47f5a Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 2 Jun 2010 14:28:52 +0200 Subject: block: autoconvert trivial BKL users to private mutex The block device drivers have all gained new lock_kernel calls from a recent pushdown, and some of the drivers were already using the BKL before. This turns the BKL into a set of per-driver mutexes. Still need to check whether this is safe to do. file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*/d' ${file} else sed -i 's/include.*.*$/include /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.*\/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann --- drivers/block/paride/pcd.c | 15 ++++++++------- drivers/block/paride/pd.c | 15 ++++++++------- drivers/block/paride/pf.c | 17 +++++++++-------- 3 files changed, 25 insertions(+), 22 deletions(-) (limited to 'drivers/block/paride') diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c index 76f8565e1e8d..62cec6afd7ad 100644 --- a/drivers/block/paride/pcd.c +++ b/drivers/block/paride/pcd.c @@ -138,9 +138,10 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY}; #include #include #include -#include +#include #include +static DEFINE_MUTEX(pcd_mutex); static DEFINE_SPINLOCK(pcd_lock); module_param(verbose, bool, 0644); @@ -227,9 +228,9 @@ static int pcd_block_open(struct block_device *bdev, fmode_t mode) struct pcd_unit *cd = bdev->bd_disk->private_data; int ret; - lock_kernel(); + mutex_lock(&pcd_mutex); ret = cdrom_open(&cd->info, bdev, mode); - unlock_kernel(); + mutex_unlock(&pcd_mutex); return ret; } @@ -237,9 +238,9 @@ static int pcd_block_open(struct block_device *bdev, fmode_t mode) static int pcd_block_release(struct gendisk *disk, fmode_t mode) { struct pcd_unit *cd = disk->private_data; - lock_kernel(); + mutex_lock(&pcd_mutex); cdrom_release(&cd->info, mode); - unlock_kernel(); + mutex_unlock(&pcd_mutex); return 0; } @@ -249,9 +250,9 @@ static int pcd_block_ioctl(struct block_device *bdev, fmode_t mode, struct pcd_unit *cd = bdev->bd_disk->private_data; int ret; - lock_kernel(); + mutex_lock(&pcd_mutex); ret = cdrom_ioctl(&cd->info, bdev, mode, cmd, arg); - unlock_kernel(); + mutex_unlock(&pcd_mutex); return ret; } diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c index 985f0d4f1d1e..c0ee1558b9bb 100644 --- a/drivers/block/paride/pd.c +++ b/drivers/block/paride/pd.c @@ -153,10 +153,11 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_GEO, D_SBY, D_DLY, D_SLV}; #include #include #include -#include +#include #include #include +static DEFINE_MUTEX(pd_mutex); static DEFINE_SPINLOCK(pd_lock); module_param(verbose, bool, 0); @@ -736,14 +737,14 @@ static int pd_open(struct block_device *bdev, fmode_t mode) { struct pd_unit *disk = bdev->bd_disk->private_data; - lock_kernel(); + mutex_lock(&pd_mutex); disk->access++; if (disk->removable) { pd_special_command(disk, pd_media_check); pd_special_command(disk, pd_door_lock); } - unlock_kernel(); + mutex_unlock(&pd_mutex); return 0; } @@ -771,10 +772,10 @@ static int pd_ioctl(struct block_device *bdev, fmode_t mode, switch (cmd) { case CDROMEJECT: - lock_kernel(); + mutex_lock(&pd_mutex); if (disk->access == 1) pd_special_command(disk, pd_eject); - unlock_kernel(); + mutex_unlock(&pd_mutex); return 0; default: return -EINVAL; @@ -785,10 +786,10 @@ static int pd_release(struct gendisk *p, fmode_t mode) { struct pd_unit *disk = p->private_data; - lock_kernel(); + mutex_lock(&pd_mutex); if (!--disk->access && disk->removable) pd_special_command(disk, pd_door_unlock); - unlock_kernel(); + mutex_unlock(&pd_mutex); return 0; } diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c index 4457b494882a..635f25dd9e10 100644 --- a/drivers/block/paride/pf.c +++ b/drivers/block/paride/pf.c @@ -152,9 +152,10 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_LUN, D_DLY}; #include #include #include -#include +#include #include +static DEFINE_MUTEX(pf_mutex); static DEFINE_SPINLOCK(pf_spin_lock); module_param(verbose, bool, 0644); @@ -302,7 +303,7 @@ static int pf_open(struct block_device *bdev, fmode_t mode) struct pf_unit *pf = bdev->bd_disk->private_data; int ret; - lock_kernel(); + mutex_lock(&pf_mutex); pf_identify(pf); ret = -ENODEV; @@ -318,7 +319,7 @@ static int pf_open(struct block_device *bdev, fmode_t mode) if (pf->removable) pf_lock(pf, 1); out: - unlock_kernel(); + mutex_unlock(&pf_mutex); return ret; } @@ -349,9 +350,9 @@ static int pf_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, u if (pf->access != 1) return -EBUSY; - lock_kernel(); + mutex_lock(&pf_mutex); pf_eject(pf); - unlock_kernel(); + mutex_unlock(&pf_mutex); return 0; } @@ -360,9 +361,9 @@ static int pf_release(struct gendisk *disk, fmode_t mode) { struct pf_unit *pf = disk->private_data; - lock_kernel(); + mutex_lock(&pf_mutex); if (pf->access <= 0) { - unlock_kernel(); + mutex_unlock(&pf_mutex); return -EINVAL; } @@ -371,7 +372,7 @@ static int pf_release(struct gendisk *disk, fmode_t mode) if (!pf->access && pf->removable) pf_lock(pf, 0); - unlock_kernel(); + mutex_unlock(&pf_mutex); return 0; } -- cgit v1.2.1