Messages in this thread |  | | Date | Thu, 4 Oct 2001 16:35:46 +0200 (CEST) | From | Karl Pitrich <> | Subject | 100% sync block device on 2.2 ? |
| |
hi.
i wrote a block driver for a custom battery-backup'ed sram-isa card which is io mapped. (kernel is 2.2.16, switch to 2.4.x impossible)
i have a minix fs on it.
everything works fine, except that i need my sram-disk _absolutely_ in sync. i mounted -o sync, but the kernel does'nt seem to sync immediately. so after any reboot my data is corrupt, which is a problem.
this is my /proc/sys/vm/bdflush, which i tuned: 1 5000 5 25 1 100 100 1 1
so, it should flush dirty buffers all 100hz, if i am right.
is there any way to bypass/disable buffer cache for my block device? why does this work in floppy.c? how does sct's rawdevice stuff do this? (i checked both .c but cant get the clue)
thanks a lot for help, karl.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |