diff options
Diffstat (limited to 'xenolinux-2.4.22-sparse/drivers/block/ll_rw_blk.c')
| -rw-r--r-- | xenolinux-2.4.22-sparse/drivers/block/ll_rw_blk.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/xenolinux-2.4.22-sparse/drivers/block/ll_rw_blk.c b/xenolinux-2.4.22-sparse/drivers/block/ll_rw_blk.c index f42c17d026..bca30ae493 100644 --- a/xenolinux-2.4.22-sparse/drivers/block/ll_rw_blk.c +++ b/xenolinux-2.4.22-sparse/drivers/block/ll_rw_blk.c @@ -121,6 +121,10 @@ int * max_sectors[MAX_BLKDEV]; unsigned long blk_max_low_pfn, blk_max_pfn; int blk_nohighio = 0; +int block_dump = 0; + +static struct timer_list writeback_timer; + static inline int get_max_sectors(kdev_t dev) { if (!max_sectors[MAJOR(dev)]) @@ -1293,6 +1297,9 @@ void submit_bh(int rw, struct buffer_head * bh) if (waitqueue_active(&bh->b_wait)) wake_up(&bh->b_wait); + if (block_dump) + printk(KERN_DEBUG "%s: %s block %lu/%u on %s\n", current->comm, rw == WRITE ? "WRITE" : "READ", bh->b_rsector, count, kdevname(bh->b_rdev)); + put_bh(bh); switch (rw) { case WRITE: @@ -1413,6 +1420,11 @@ sorry: extern int stram_device_init (void); #endif +static void blk_writeback_timer(unsigned long data) +{ + wakeup_bdflush(); + wakeup_kupdate(); +} /** * end_that_request_first - end I/O on one buffer. @@ -1469,10 +1481,18 @@ int end_that_request_first (struct request *req, int uptodate, char *name) return 0; } +extern int laptop_mode; + void end_that_request_last(struct request *req) { struct completion *waiting = req->waiting; + /* + * schedule the writeout of pending dirty data when the disk is idle + */ + if (laptop_mode && req->cmd == READ) + mod_timer(&writeback_timer, jiffies + 5 * HZ); + req_finished_io(req); blkdev_release_request(req); if (waiting) @@ -1500,6 +1520,9 @@ int __init blk_dev_init(void) blk_max_low_pfn = max_low_pfn - 1; blk_max_pfn = max_pfn - 1; + init_timer(&writeback_timer); + writeback_timer.function = blk_writeback_timer; + #ifdef CONFIG_AMIGA_Z2RAM z2_init(); #endif |