From b3491b0db165c0cbe25874da66d97652c03db654 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 31 May 2024 09:48:00 +0200
Subject: [PATCH] sd: simplify the ZBC case in provisioning_mode_store
Don't reset the discard settings to no-op over and over when a user
writes to the provisioning attribute as that is already the default
mode for ZBC devices. In hindsight we should have made writing to
the attribute fail for ZBC devices, but the code has probably been
around for far too long to change this now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240531074837.1648501-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
drivers/scsi/sd.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3dff9150ce11e..83aa17fea39d3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -461,14 +461,13 @@ provisioning_mode_store(struct device *dev, struct device_attribute *attr,
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- if (sd_is_zoned(sdkp)) {
- sd_config_discard(sdkp, SD_LBP_DISABLE);
- return count;
- }
-
if (sdp->type != TYPE_DISK)
return -EINVAL;
+ /* ignore the provisioning mode for ZBC devices */
+ if (sd_is_zoned(sdkp))
+ return count;
+
mode = sysfs_match_string(lbp_mode, buf);
if (mode < 0)
return -EINVAL;
--
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