leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

block-dasd_eer: BKL pushdown

Browse Source 
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2008-05-20 19:15:38 +02:00 committed by Jonathan Corbet
parent 9a8bd2f76c
commit 986837bade
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/s390/block/dasd_eer.c
View File

@ -15,6 +15,7 @@
#include <linux/device.h>
#include <linux/poll.h>
#include <linux/mutex.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/atomic.h>
@ -525,6 +526,7 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
eerb = kzalloc(sizeof(struct eerbuffer), GFP_KERNEL);
if (!eerb)
return -ENOMEM;
lock_kernel();
eerb->buffer_page_count = eer_pages;
if (eerb->buffer_page_count < 1 ||
eerb->buffer_page_count > INT_MAX / PAGE_SIZE) {
@ -532,6 +534,7 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
MESSAGE(KERN_WARNING, "can't open device since module "
"parameter eer_pages is smaller then 1 or"
" bigger then %d", (int)(INT_MAX / PAGE_SIZE));
unlock_kernel();
return -EINVAL;
}
eerb->buffersize = eerb->buffer_page_count * PAGE_SIZE;
@ -539,12 +542,14 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
GFP_KERNEL);
if (!eerb->buffer) {
kfree(eerb);
unlock_kernel();
return -ENOMEM;
}
if (dasd_eer_allocate_buffer_pages(eerb->buffer,
eerb->buffer_page_count)) {
kfree(eerb->buffer);
kfree(eerb);
unlock_kernel();
return -ENOMEM;
}
filp->private_data = eerb;
@ -552,6 +557,7 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
list_add(&eerb->list, &bufferlist);
spin_unlock_irqrestore(&bufferlock, flags);
unlock_kernel();
return nonseekable_open(inp,filp);
}