diff options
Diffstat (limited to 'include/linux/raid/bitmap.h')
| -rw-r--r-- | include/linux/raid/bitmap.h | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h index f785cf26cbad..cfe60cfc8f3d 100644 --- a/include/linux/raid/bitmap.h +++ b/include/linux/raid/bitmap.h | |||
| @@ -233,21 +233,12 @@ struct bitmap { | |||
| 233 | unsigned long daemon_sleep; /* how many seconds between updates? */ | 233 | unsigned long daemon_sleep; /* how many seconds between updates? */ |
| 234 | 234 | ||
| 235 | /* | 235 | /* |
| 236 | * bitmap write daemon - this daemon performs writes to the bitmap file | 236 | * bitmap_writeback_daemon waits for file-pages that have been written, |
| 237 | * this thread is only needed because of a limitation in ext3 (jbd) | 237 | * as there is no way to get a call-back when a page write completes. |
| 238 | * that does not allow a task to have two journal transactions ongoing | ||
| 239 | * simultaneously (even if the transactions are for two different | ||
| 240 | * filesystems) -- in the case of bitmap, that would be the filesystem | ||
| 241 | * that the bitmap file resides on and the filesystem that is mounted | ||
| 242 | * on the md device -- see current->journal_info in jbd/transaction.c | ||
| 243 | */ | 238 | */ |
| 244 | mdk_thread_t *writeback_daemon; | 239 | mdk_thread_t *writeback_daemon; |
| 245 | spinlock_t write_lock; | 240 | spinlock_t write_lock; |
| 246 | struct semaphore write_ready; | ||
| 247 | struct semaphore write_done; | ||
| 248 | unsigned long writes_pending; | ||
| 249 | wait_queue_head_t write_wait; | 241 | wait_queue_head_t write_wait; |
| 250 | struct list_head write_pages; | ||
| 251 | struct list_head complete_pages; | 242 | struct list_head complete_pages; |
| 252 | mempool_t *write_pool; | 243 | mempool_t *write_pool; |
| 253 | }; | 244 | }; |
