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author | Tejun Heo <tj@kernel.org> | 2013-01-11 13:06:35 -0800 |
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committer | Jens Axboe <axboe@kernel.dk> | 2013-01-14 15:00:36 +0100 |
commit | f0059afd3e6e7aa1a0ffc23468b74c43d47660b8 (patch) | |
tree | fe8f51ff74f725a182f312e1cfb3fea819f33cd6 /fs/buffer.c | |
parent | 8c1cf6bb02fda79b0a4b9bd121f6be6d4ce7a15a (diff) | |
download | lwn-f0059afd3e6e7aa1a0ffc23468b74c43d47660b8.tar.gz lwn-f0059afd3e6e7aa1a0ffc23468b74c43d47660b8.zip |
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.c | 6 |
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(); |