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| author | NeilBrown <neilb@suse.de> | 2011-05-11 14:51:19 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2011-05-11 14:51:19 +1000 |
| commit | af6d7b760c7547c1a410a333bdb24daed24e1043 (patch) | |
| tree | 5789fa005f94911bc6a92a6cb8700b8025a3adc4 /drivers/md/raid1.h | |
| parent | 7ca78d57d11a91bc93b35342fa58647b85bedeb1 (diff) | |
| download | linux-af6d7b760c7547c1a410a333bdb24daed24e1043.tar.gz linux-af6d7b760c7547c1a410a333bdb24daed24e1043.tar.bz2 linux-af6d7b760c7547c1a410a333bdb24daed24e1043.zip | |
md/raid1: improve handling of pages allocated for write-behind.
The current handling and freeing of these pages is a bit fragile.
We only keep the list of allocated pages in each bio, so we need to
still have a valid bio when freeing the pages, which is a bit clumsy.
So simply store the allocated page list in the r1_bio so it can easily
be found and freed when we are finished with the r1_bio.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid1.h')
| -rw-r--r-- | drivers/md/raid1.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h index cbfdf1a6acd9..5fc4ca1af863 100644 --- a/drivers/md/raid1.h +++ b/drivers/md/raid1.h @@ -94,7 +94,9 @@ struct r1bio_s { int read_disk; struct list_head retry_list; - struct bitmap_update *bitmap_update; + /* Next two are only valid when R1BIO_BehindIO is set */ + struct page **behind_pages; + int behind_page_count; /* * if the IO is in WRITE direction, then multiple bios are used. * We choose the number when they are allocated. |