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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-07-27 13:54:08 +0200 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-07-27 13:54:08 +0200 |
| commit | eda3d8f5604860aae1bb9996bb5efc4213778369 (patch) | |
| tree | 9d3887d2665bcc5f5abf200758794545c7b2c69b /drivers/md/dm-snap.h | |
| parent | include/video/atmel_lcdc.h must #include <linux/workqueue.h> (diff) | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rol... (diff) | |
| download | linux-eda3d8f5604860aae1bb9996bb5efc4213778369.tar.xz linux-eda3d8f5604860aae1bb9996bb5efc4213778369.zip | |
Merge commit 'upstream/master'
Diffstat (limited to 'drivers/md/dm-snap.h')
| -rw-r--r-- | drivers/md/dm-snap.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/md/dm-snap.h b/drivers/md/dm-snap.h index 24f9fb73b982..292c15609ae3 100644 --- a/drivers/md/dm-snap.h +++ b/drivers/md/dm-snap.h @@ -130,6 +130,10 @@ struct exception_store { void *context; }; +#define DM_TRACKED_CHUNK_HASH_SIZE 16 +#define DM_TRACKED_CHUNK_HASH(x) ((unsigned long)(x) & \ + (DM_TRACKED_CHUNK_HASH_SIZE - 1)) + struct dm_snapshot { struct rw_semaphore lock; struct dm_target *ti; @@ -157,6 +161,8 @@ struct dm_snapshot { /* The last percentage we notified */ int last_percent; + mempool_t *pending_pool; + struct exception_table pending; struct exception_table complete; @@ -174,6 +180,11 @@ struct dm_snapshot { /* Queue of snapshot writes for ksnapd to flush */ struct bio_list queued_bios; struct work_struct queued_bios_work; + + /* Chunks with outstanding reads */ + mempool_t *tracked_chunk_pool; + spinlock_t tracked_chunk_lock; + struct hlist_head tracked_chunk_hash[DM_TRACKED_CHUNK_HASH_SIZE]; }; /* |