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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2010-07-25 14:29:18 +0300 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-08-07 18:53:56 +0200 |
| commit | ecd584030da67ede1bf17955746a6ce834d9fc6b (patch) | |
| tree | 3f26260102a84e8cb047249e65cdde6b9aadcb96 /fs/fs-writeback.c | |
| parent | 78c40cb6581a74adc48821f3de6b864a54d4c34d (diff) | |
| download | lwn-ecd584030da67ede1bf17955746a6ce834d9fc6b.tar.gz lwn-ecd584030da67ede1bf17955746a6ce834d9fc6b.zip | |
writeback: move last_active to bdi
Currently bdi threads use local variable 'last_active' which stores last time
when the bdi thread did some useful work. Move this local variable to 'struct
bdi_writeback'. This is just a preparation for the further patches which will
make the forker thread decide when bdi threads should be killed.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 57fbfd0ebc52..9f5cab75c157 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -800,12 +800,12 @@ int bdi_writeback_thread(void *data) { struct bdi_writeback *wb = data; struct backing_dev_info *bdi = wb->bdi; - unsigned long last_active = jiffies; unsigned long wait_jiffies = -1UL; long pages_written; current->flags |= PF_FLUSHER | PF_SWAPWRITE; set_freezable(); + wb->last_active = jiffies; /* * Our parent may run at a different priority, just set us to normal @@ -827,7 +827,7 @@ int bdi_writeback_thread(void *data) trace_writeback_pages_written(pages_written); if (pages_written) - last_active = jiffies; + wb->last_active = jiffies; else if (wait_jiffies != -1UL) { unsigned long max_idle; @@ -837,7 +837,7 @@ int bdi_writeback_thread(void *data) * recreated automatically. */ max_idle = max(5UL * 60 * HZ, wait_jiffies); - if (time_after(jiffies, max_idle + last_active)) + if (time_after(jiffies, max_idle + wb->last_active)) break; } |