diff mbox series

[v4,5/7] block: Add blk_queue_max_allocate_sectors()

Message ID 157960336718.108120.10388241536544475227.stgit@localhost.localdomain (mailing list archive)
State Not Applicable, archived
Delegated to: Mike Snitzer
Headers show
Series block: Introduce REQ_ALLOCATE flag for REQ_OP_WRITE_ZEROES | expand

Commit Message

Kirill Tkhai Jan. 21, 2020, 10:42 a.m. UTC 
This is a new helper to assign max_allocate_sectors
limit of block device queue.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
---
 block/blk-settings.c   |   13 +++++++++++++
 include/linux/blkdev.h |    2 ++
 2 files changed, 15 insertions(+)




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diff mbox series

Patch

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 81468cd454a6..8d2fcbd693f9 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -259,6 +259,19 @@  void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
 }
 EXPORT_SYMBOL(blk_queue_max_write_zeroes_sectors);
 
+/**
+ * blk_queue_max_allocate_sectors - set max sectors for a single
+ *                                  allocate request
+ * @q:  the request queue for the device
+ * @max_allocate_sectors: maximum number of sectors to write per command
+ **/
+void blk_queue_max_allocate_sectors(struct request_queue *q,
+		unsigned int max_allocate_sectors)
+{
+	q->limits.max_allocate_sectors = max_allocate_sectors;
+}
+EXPORT_SYMBOL(blk_queue_max_allocate_sectors);
+
 /**
  * blk_queue_max_segments - set max hw segments for a request for this queue
  * @q:  the request queue for the device
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 20c94a7f9411..249dce6dd436 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1089,6 +1089,8 @@  extern void blk_queue_max_write_same_sectors(struct request_queue *q,
 		unsigned int max_write_same_sectors);
 extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
 		unsigned int max_write_same_sectors);
+extern void blk_queue_max_allocate_sectors(struct request_queue *q,
+		unsigned int max_allocate_sectors);
 extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
 extern void blk_queue_physical_block_size(struct request_queue *, unsigned int);
 extern void blk_queue_alignment_offset(struct request_queue *q,