diff options
Diffstat (limited to 'dm-thin-update-discard_granularity-to-reflect-the-thin-pool-blocksize.patch')
| -rw-r--r-- | dm-thin-update-discard_granularity-to-reflect-the-thin-pool-blocksize.patch | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/dm-thin-update-discard_granularity-to-reflect-the-thin-pool-blocksize.patch b/dm-thin-update-discard_granularity-to-reflect-the-thin-pool-blocksize.patch deleted file mode 100644 index 2994fc002..000000000 --- a/dm-thin-update-discard_granularity-to-reflect-the-thin-pool-blocksize.patch +++ /dev/null @@ -1,43 +0,0 @@ -Bugzilla: 1106856 -Upstream-status: 3.16 and CC'd to stable - -From 4adc9ea8915ff9904c3279b1b36478482d1c0825 Mon Sep 17 00:00:00 2001 -From: Lukas Czerner <lczerner@redhat.com> -Date: Wed, 11 Jun 2014 12:28:43 -0400 -Subject: dm thin: update discard_granularity to reflect the thin-pool - blocksize - -DM thinp already checks whether the discard_granularity of the data -device is a factor of the thin-pool block size. But when using the -dm-thin-pool's discard passdown support, DM thinp was not selecting the -max of the underlying data device's discard_granularity and the -thin-pool's block size. - -Update set_discard_limits() to set discard_granularity to the max of -these values. This enables blkdev_issue_discard() to properly align the -discards that are sent to the DM thin device on a full block boundary. -As such each discard will now cover an entire DM thin-pool block and the -block will be reclaimed. - -Reported-by: Zdenek Kabelac <zkabelac@redhat.com> -Signed-off-by: Lukas Czerner <lczerner@redhat.com> -Signed-off-by: Mike Snitzer <snitzer@redhat.com> -Cc: stable@vger.kernel.org - -diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c -index a0bdd56..fc9c848 100644 ---- a/drivers/md/dm-thin.c -+++ b/drivers/md/dm-thin.c -@@ -3094,7 +3094,8 @@ static void set_discard_limits(struct pool_c *pt, struct queue_limits *limits) - */ - if (pt->adjusted_pf.discard_passdown) { - data_limits = &bdev_get_queue(pt->data_dev->bdev)->limits; -- limits->discard_granularity = data_limits->discard_granularity; -+ limits->discard_granularity = max(data_limits->discard_granularity, -+ pool->sectors_per_block << SECTOR_SHIFT); - } else - limits->discard_granularity = pool->sectors_per_block << SECTOR_SHIFT; - } --- -cgit v0.10.1 - |