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-rw-r--r--drivers/mmc/host/at91_mci.c2
-rw-r--r--fs/btrfs/ioctl.c5
-rw-r--r--lib/btree.c3
3 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index a6dd7da3735..336d9f553f3 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -314,8 +314,8 @@ static void at91_mci_post_dma_read(struct at91mci_host *host)
dmabuf = (unsigned *)tmpv;
}
+ flush_kernel_dcache_page(sg_page(sg));
kunmap_atomic(sgbuffer, KM_BIO_SRC_IRQ);
- dmac_flush_range((void *)sgbuffer, ((void *)sgbuffer) + amount);
data->bytes_xfered += amount;
if (size == 0)
break;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index e84ef60ffe3..97a97839a86 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1481,12 +1481,17 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
ret = -EBADF;
goto out_drop_write;
}
+
src = src_file->f_dentry->d_inode;
ret = -EINVAL;
if (src == inode)
goto out_fput;
+ /* the src must be open for reading */
+ if (!(src_file->f_mode & FMODE_READ))
+ goto out_fput;
+
ret = -EISDIR;
if (S_ISDIR(src->i_mode) || S_ISDIR(inode->i_mode))
goto out_fput;
diff --git a/lib/btree.c b/lib/btree.c
index 41859a82021..c9c6f035152 100644
--- a/lib/btree.c
+++ b/lib/btree.c
@@ -95,7 +95,8 @@ static unsigned long *btree_node_alloc(struct btree_head *head, gfp_t gfp)
unsigned long *node;
node = mempool_alloc(head->mempool, gfp);
- memset(node, 0, NODESIZE);
+ if (likely(node))
+ memset(node, 0, NODESIZE);
return node;
}