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| author | Ingo Molnar <mingo@kernel.org> | 2014-02-27 12:41:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-27 12:41:17 +0100 |
| commit | ff5a7088f0f04dd246e514f898cab0c863c3598d (patch) | |
| tree | 68a8f588e60fba05ee54b74b32a3269a72d130b9 /drivers/char/virtio_console.c | |
| parent | Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/... (diff) | |
| parent | perf: Fix hotplug splat (diff) | |
| download | linux-ff5a7088f0f04dd246e514f898cab0c863c3598d.tar.xz linux-ff5a7088f0f04dd246e514f898cab0c863c3598d.zip | |
Merge branch 'perf/urgent' into perf/core
Merge the latest fixes before queueing up new changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/char/virtio_console.c')
| -rw-r--r-- | drivers/char/virtio_console.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index feea87cc6b8f..6928d094451d 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -890,12 +890,10 @@ static int pipe_to_sg(struct pipe_inode_info *pipe, struct pipe_buffer *buf, } else { /* Failback to copying a page */ struct page *page = alloc_page(GFP_KERNEL); - char *src = buf->ops->map(pipe, buf, 1); - char *dst; + char *src; if (!page) return -ENOMEM; - dst = kmap(page); offset = sd->pos & ~PAGE_MASK; @@ -903,9 +901,8 @@ static int pipe_to_sg(struct pipe_inode_info *pipe, struct pipe_buffer *buf, if (len + offset > PAGE_SIZE) len = PAGE_SIZE - offset; - memcpy(dst + offset, src + buf->offset, len); - - kunmap(page); + src = buf->ops->map(pipe, buf, 1); + memcpy(page_address(page) + offset, src + buf->offset, len); buf->ops->unmap(pipe, buf, src); sg_set_page(&(sgl->sg[sgl->n]), page, len, offset); |