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[PATCH] md/bitmap: remove bitmap writeback daemon

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md/bitmap currently has a separate thread to wait for writes to the bitmap
file to complete (as we cannot get a callback on that action).

However this isn't needed as bitmap_unplug is called from process context and
waits for the writeback thread to do it's work.  The same result can be
achieved by doing the waiting directly in bitmap_unplug.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-06-26 00:27:44 -07:00 • committed by Linus Torvalds
parent d7375ab324
commit 0b79ccf0cd
2 changed files with 8 additions and 113 deletions
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6
include/linux/raid/bitmap.h
View file

@ -244,13 +244,7 @@ struct bitmap {
unsigned long daemon_lastrun; /* jiffies of last run */
unsigned long daemon_sleep; /* how many seconds between updates? */
/*
* bitmap_writeback_daemon waits for file-pages that have been written,
* as there is no way to get a call-back when a page write completes.
*/
mdk_thread_t *writeback_daemon;
spinlock_t write_lock;
wait_queue_head_t write_wait;
struct list_head complete_pages;
mempool_t *write_pool;
};