drm/radeon/kms: rs400/480 MC setup is different than r300.

[safe/jmp/linux-2.6] / drivers / block / loop.c

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 9ca4bb0..bd112c8 100644 (file)
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -61,7 +61,6 @@
 #include <linux/blkdev.h>
 #include <linux/blkpg.h>
 #include <linux/init.h>
-#include <linux/smp_lock.h>
 #include <linux/swap.h>
 #include <linux/slab.h>
 #include <linux/loop.h>
@@ -476,7 +475,7 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio)
        pos = ((loff_t) bio->bi_sector << 9) + lo->lo_offset;
 
        if (bio_rw(bio) == WRITE) {
-               int barrier = bio_barrier(bio);
+               bool barrier = bio_rw_flagged(bio, BIO_RW_BARRIER);
                struct file *file = lo->lo_backing_file;
 
                if (barrier) {
@@ -709,10 +708,6 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
        if (!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))
                goto out_putf;
 
-       /* new backing store needs to support loop (eg splice_read) */
-       if (!inode->i_fop->splice_read)
-               goto out_putf;
-
        /* size of the new backing store needs to be the same */
        if (get_loop_size(lo, file) != get_loop_size(lo, old_file))
                goto out_putf;
@@ -788,12 +783,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
        error = -EINVAL;
        if (S_ISREG(inode->i_mode) || S_ISBLK(inode->i_mode)) {
                const struct address_space_operations *aops = mapping->a_ops;
-               /*
-                * If we can't read - sorry. If we only can't write - well,
-                * it's going to be read-only.
-                */
-               if (!file->f_op->splice_read)
-                       goto out_putf;
+
                if (aops->write_begin)
                        lo_flags |= LO_FLAGS_USE_AOPS;
                if (!(lo_flags & LO_FLAGS_USE_AOPS) && !file->f_op->write)
@@ -959,7 +949,7 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
        lo->lo_state = Lo_unbound;
        /* This is safe: open() is still holding a reference. */
        module_put(THIS_MODULE);
-       if (max_part > 0)
+       if (max_part > 0 && bdev)
                ioctl_by_bdev(bdev, BLKRRPART, 0);
        mutex_unlock(&lo->lo_ctl_mutex);
        /*
@@ -1448,7 +1438,7 @@ out_unlocked:
        return 0;
 }
 
-static struct block_device_operations lo_fops = {
+static const struct block_device_operations lo_fops = {
        .owner =        THIS_MODULE,
        .open =         lo_open,
        .release =      lo_release,