Eric Lee / smarc-ti-linux-kernel

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Commit 06d9c2905f745c8b1920a335cbb366ba6b0fc754

Authored by Ezequiel Garcia
Committed by Artem Bityutskiy
1 parent 978d649675
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

UBI: block: Add support for the UBI_VOLUME_UPDATED notification 

Static volumes can change its 'used_bytes' when they get updated,
and so the block interface must listen to the UBI_VOLUME_UPDATED
notification to resize the block device accordingly.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@vger.kernel.org # v3.15+

Showing 1 changed file with 14 additions and 2 deletions Side-by-side Diff

drivers/mtd/ubi/block.c
Diff comments   View file @ 06d9c29
... ... @@ -524,8 +524,12 @@
524 524 }
525 525  
526 526 mutex_lock(&dev->dev_mutex);
527   - set_capacity(dev->gd, disk_capacity);
528   - ubi_msg("%s resized to %lld bytes", dev->gd->disk_name, vi->used_bytes);
  527 +
  528 + if (get_capacity(dev->gd) != disk_capacity) {
  529 + set_capacity(dev->gd, disk_capacity);
  530 + ubi_msg("%s resized to %lld bytes", dev->gd->disk_name,
  531 + vi->used_bytes);
  532 + }
529 533 mutex_unlock(&dev->dev_mutex);
530 534 mutex_unlock(&devices_mutex);
531 535 return 0;
... ... @@ -548,6 +552,14 @@
548 552 break;
549 553 case UBI_VOLUME_RESIZED:
550 554 ubiblock_resize(&nt->vi);
  555 + break;
  556 + case UBI_VOLUME_UPDATED:
  557 + /*
  558 + * If the volume is static, a content update might mean the
  559 + * size (i.e. used_bytes) was also changed.
  560 + */
  561 + if (nt->vi.vol_type == UBI_STATIC_VOLUME)
  562 + ubiblock_resize(&nt->vi);
551 563 break;
552 564 default:
553 565 break;