Dan Williams wrote:
From: Dan Williams <dan.j.williams@xxxxxxxxx>
raid5_do_soft_block_ops consolidates all the stripe cache maintenance
operations into a single routine. The stripe operations are:
* copying data between the stripe cache and user application buffers
* computing blocks to save a disk access, or to recover a missing block
* updating the parity on a write operation (reconstruct write and
read-modify-write)
* checking parity correctness
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/md/raid5.c | 289 ++++++++++++++++++++++++++++++++++++++++++++
include/linux/raid/raid5.h | 129 +++++++++++++++++++-
2 files changed, 415 insertions(+), 3 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 4500660..8fde62b 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1362,6 +1362,295 @@ static int stripe_to_pdidx(sector_t stri
return pd_idx;
}
+/*
+ * raid5_do_soft_block_ops - perform block memory operations on stripe data
+ * outside the spin lock.
+ */
+static void raid5_do_soft_block_ops(void *stripe_head_ref)
This function absolutely must be broken up into multiple functions,
presumably one per operation.
Jeff
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