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authorTejun Heo <tj@kernel.org>2013-01-11 13:06:35 -0800
committerJens Axboe <axboe@kernel.dk>2013-01-14 15:00:36 +0100
commitf0059afd3e6e7aa1a0ffc23468b74c43d47660b8 (patch)
treefe8f51ff74f725a182f312e1cfb3fea819f33cd6 /fs/buffer.c
parent8c1cf6bb02fda79b0a4b9bd121f6be6d4ce7a15a (diff)
downloadlinux-f0059afd3e6e7aa1a0ffc23468b74c43d47660b8.tar.bz2
buffer: make touch_buffer() an exported function
We want to add a trace point to touch_buffer() but macros and inline functions defined in header files can't have tracing points. Move touch_buffer() to fs/buffer.c and make it a proper function. The new exported function is also declared inline. As most uses of touch_buffer() are inside buffer.c with nilfs2 as the only other user, the effect of this change should be negligible. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index c017a2dfb909..a8c2dfb68dcd 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -53,6 +53,12 @@ void init_buffer(struct buffer_head *bh, bh_end_io_t *handler, void *private)
}
EXPORT_SYMBOL(init_buffer);
+inline void touch_buffer(struct buffer_head *bh)
+{
+ mark_page_accessed(bh->b_page);
+}
+EXPORT_SYMBOL(touch_buffer);
+
static int sleep_on_buffer(void *word)
{
io_schedule();