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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-07-25 14:29:18 +0300
committerJens Axboe <jaxboe@fusionio.com>2010-08-07 18:53:56 +0200
commitecd584030da67ede1bf17955746a6ce834d9fc6b (patch)
tree3f26260102a84e8cb047249e65cdde6b9aadcb96 /include/linux/backing-dev.h
parent78c40cb6581a74adc48821f3de6b864a54d4c34d (diff)
downloadop-kernel-dev-ecd584030da67ede1bf17955746a6ce834d9fc6b.zip
op-kernel-dev-ecd584030da67ede1bf17955746a6ce834d9fc6b.tar.gz
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 'include/linux/backing-dev.h')
-rw-r--r--include/linux/backing-dev.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 95ecb2b..71b6223 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -45,15 +45,16 @@ enum bdi_stat_item {
#define BDI_STAT_BATCH (8*(1+ilog2(nr_cpu_ids)))
struct bdi_writeback {
- struct backing_dev_info *bdi; /* our parent bdi */
+ struct backing_dev_info *bdi; /* our parent bdi */
unsigned int nr;
- unsigned long last_old_flush; /* last old data flush */
+ unsigned long last_old_flush; /* last old data flush */
+ unsigned long last_active; /* last time bdi thread was active */
- struct task_struct *task; /* writeback thread */
- struct list_head b_dirty; /* dirty inodes */
- struct list_head b_io; /* parked for writeback */
- struct list_head b_more_io; /* parked for more writeback */
+ struct task_struct *task; /* writeback thread */
+ struct list_head b_dirty; /* dirty inodes */
+ struct list_head b_io; /* parked for writeback */
+ struct list_head b_more_io; /* parked for more writeback */
};
struct backing_dev_info {
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