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[XEN,1/2] blkif: Fix alignment description for discard request

Message ID 20240926125347.23738-2-anthony.perard@vates.tech (mailing list archive)
State New
Headers show
Series blkif: Fix discard req align requirement and various typos | expand

Commit Message

Anthony PERARD Sept. 26, 2024, 12:53 p.m. UTC
The discard feature have an other xenstore node to described the size
of the blocks than can be discarded, "discard-granularity", which
default to "sector-size" when absent as noted in the properties and in
note 4. So discard request should be aligned on this value.

Fixes: 221f2748e8da ("blkif: reconcile protocol specification with in-use implementations")
Signed-off-by: Anthony PERARD <anthony.perard@vates.tech>
---
 xen/include/public/io/blkif.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/xen/include/public/io/blkif.h b/xen/include/public/io/blkif.h
index 9b00d633d3..789bab65ab 100644
--- a/xen/include/public/io/blkif.h
+++ b/xen/include/public/io/blkif.h
@@ -668,7 +668,7 @@  typedef struct blkif_request blkif_request_t;
  *
  * The 'sector_number' field is in units of 512b, despite the value of the
  * 'sector-size' xenstore node.  Note however that the offset in
- * 'sector_number' must be aligned to 'sector-size'.
+ * 'sector_number' must be aligned to 'discard-granularity'.
  */
 struct blkif_request_discard {
     uint8_t        operation;    /* BLKIF_OP_DISCARD                     */