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-rw-r--r--block/blk-throttle.c2
-rw-r--r--block/bsg.c8
-rw-r--r--block/compat_ioctl.c1
-rw-r--r--block/ioctl.c1
4 files changed, 9 insertions, 3 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 56ad453..004be80 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -645,7 +645,7 @@ static int throtl_dispatch_tg(struct throtl_data *td, struct throtl_grp *tg,
{
unsigned int nr_reads = 0, nr_writes = 0;
unsigned int max_nr_reads = throtl_grp_quantum*3/4;
- unsigned int max_nr_writes = throtl_grp_quantum - nr_reads;
+ unsigned int max_nr_writes = throtl_grp_quantum - max_nr_reads;
struct bio *bio;
/* Try to dispatch 75% READS and 25% WRITES */
diff --git a/block/bsg.c b/block/bsg.c
index f20d6a7..0c8b64a 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -250,6 +250,14 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
int ret, rw;
unsigned int dxfer_len;
void *dxferp = NULL;
+ struct bsg_class_device *bcd = &q->bsg_dev;
+
+ /* if the LLD has been removed then the bsg_unregister_queue will
+ * eventually be called and the class_dev was freed, so we can no
+ * longer use this request_queue. Return no such address.
+ */
+ if (!bcd->class_dev)
+ return ERR_PTR(-ENXIO);
dprintk("map hdr %llx/%u %llx/%u\n", (unsigned long long) hdr->dout_xferp,
hdr->dout_xfer_len, (unsigned long long) hdr->din_xferp,
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 58c6ee5b..cc3eb78 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -8,7 +8,6 @@
#include <linux/hdreg.h>
#include <linux/slab.h>
#include <linux/syscalls.h>
-#include <linux/smp_lock.h>
#include <linux/types.h>
#include <linux/uaccess.h>
diff --git a/block/ioctl.c b/block/ioctl.c
index 3d866d0..a9a302e 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -5,7 +5,6 @@
#include <linux/hdreg.h>
#include <linux/backing-dev.h>
#include <linux/buffer_head.h>
-#include <linux/smp_lock.h>
#include <linux/blktrace_api.h>
#include <asm/uaccess.h>
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