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[PATCH] vmsplice: restrict stealing a little more

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Apply the same rules as the anon pipe pages, only allow stealing
if no one else is using the page.

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2006-05-02 15:29:57 +02:00
commit 330ab71619
3 changed files with 5 additions and 4 deletions
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6
fs/pipe.c
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@ -184,8 +184,8 @@ void generic_pipe_buf_unmap(struct pipe_inode_info *pipe,
kunmap(buf->page);
}
static int anon_pipe_buf_steal(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
int generic_pipe_buf_steal(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
struct page *page = buf->page;
@ -213,7 +213,7 @@ static struct pipe_buf_operations anon_pipe_buf_ops = {
.unmap = generic_pipe_buf_unmap,
.pin = generic_pipe_buf_pin,
.release = anon_pipe_buf_release,
.steal = anon_pipe_buf_steal,
.steal = generic_pipe_buf_steal,
.get = generic_pipe_buf_get,
};