Merge branch 'master' into for-linus
Conflicts:
fs/pipe.c
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/fs/pipe.c b/fs/pipe.c
index bdd3f96..541d662 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -230,6 +230,7 @@
return kmap(buf->page);
}
+EXPORT_SYMBOL(generic_pipe_buf_map);
/**
* generic_pipe_buf_unmap - unmap a previously mapped pipe buffer
@@ -249,6 +250,7 @@
} else
kunmap(buf->page);
}
+EXPORT_SYMBOL(generic_pipe_buf_unmap);
/**
* generic_pipe_buf_steal - attempt to take ownership of a &pipe_buffer
@@ -279,6 +281,7 @@
return 1;
}
+EXPORT_SYMBOL(generic_pipe_buf_steal);
/**
* generic_pipe_buf_get - get a reference to a &struct pipe_buffer
@@ -294,6 +297,7 @@
{
page_cache_get(buf->page);
}
+EXPORT_SYMBOL(generic_pipe_buf_get);
/**
* generic_pipe_buf_confirm - verify contents of the pipe buffer
@@ -309,6 +313,7 @@
{
return 0;
}
+EXPORT_SYMBOL(generic_pipe_buf_confirm);
/**
* generic_pipe_buf_release - put a reference to a &struct pipe_buffer
@@ -323,6 +328,7 @@
{
page_cache_release(buf->page);
}
+EXPORT_SYMBOL(generic_pipe_buf_release);
static const struct pipe_buf_operations anon_pipe_buf_ops = {
.can_merge = 1,
@@ -1172,16 +1178,20 @@
nr_pages = (arg + PAGE_SIZE - 1) >> PAGE_SHIFT;
nr_pages = roundup_pow_of_two(nr_pages);
- if (!capable(CAP_SYS_ADMIN) && nr_pages > pipe_max_pages)
- return -EPERM;
+ if (!capable(CAP_SYS_ADMIN) && nr_pages > pipe_max_pages) {
+ ret = -EPERM;
+ goto out;
+ }
/*
* The pipe needs to be at least 2 pages large to
* guarantee POSIX behaviour.
*/
- if (nr_pages < 2)
- return -EINVAL;
- ret = pipe_set_size(pipe, nr_pages);
+ if (arg < 2) {
+ ret = -EINVAL;
+ goto out;
+ }
+ ret = pipe_set_size(pipe, arg);
break;
}
case F_GETPIPE_SZ:
@@ -1192,6 +1202,7 @@
break;
}
+out:
mutex_unlock(&pipe->inode->i_mutex);
return ret;
}