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mm: export generic_pipe_buf_*() to modules

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This is needed by fuse device code which wants to create pipe buffers.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi
2010-05-26 08:44:22 +02:00
parent c3021629a0
commit 51921cb746
1 changed files with 6 additions and 0 deletions
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6
fs/pipe.c
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@@ -230,6 +230,7 @@ void *generic_pipe_buf_map(struct pipe_inode_info *pipe,
return kmap(buf->page); return kmap(buf->page);
} }
EXPORT_SYMBOL(generic_pipe_buf_map);
/** /**
* generic_pipe_buf_unmap - unmap a previously mapped pipe buffer * generic_pipe_buf_unmap - unmap a previously mapped pipe buffer
@@ -249,6 +250,7 @@ void generic_pipe_buf_unmap(struct pipe_inode_info *pipe,
} else } else
kunmap(buf->page); kunmap(buf->page);
} }
EXPORT_SYMBOL(generic_pipe_buf_unmap);
/** /**
* generic_pipe_buf_steal - attempt to take ownership of a &pipe_buffer * generic_pipe_buf_steal - attempt to take ownership of a &pipe_buffer
@@ -279,6 +281,7 @@ int generic_pipe_buf_steal(struct pipe_inode_info *pipe,
return 1; return 1;
} }
EXPORT_SYMBOL(generic_pipe_buf_steal);
/** /**
* generic_pipe_buf_get - get a reference to a &struct pipe_buffer * generic_pipe_buf_get - get a reference to a &struct pipe_buffer
@@ -294,6 +297,7 @@ void generic_pipe_buf_get(struct pipe_inode_info *pipe, struct pipe_buffer *buf)
{ {
page_cache_get(buf->page); page_cache_get(buf->page);
} }
EXPORT_SYMBOL(generic_pipe_buf_get);
/** /**
* generic_pipe_buf_confirm - verify contents of the pipe buffer * generic_pipe_buf_confirm - verify contents of the pipe buffer
@@ -309,6 +313,7 @@ int generic_pipe_buf_confirm(struct pipe_inode_info *info,
{ {
return 0; return 0;
} }
EXPORT_SYMBOL(generic_pipe_buf_confirm);
/** /**
* generic_pipe_buf_release - put a reference to a &struct pipe_buffer * generic_pipe_buf_release - put a reference to a &struct pipe_buffer
@@ -323,6 +328,7 @@ void generic_pipe_buf_release(struct pipe_inode_info *pipe,
{ {
page_cache_release(buf->page); page_cache_release(buf->page);
} }
EXPORT_SYMBOL(generic_pipe_buf_release);
static const struct pipe_buf_operations anon_pipe_buf_ops = { static const struct pipe_buf_operations anon_pipe_buf_ops = {
.can_merge = 1, .can_merge = 1,