lkml.org 
[lkml]   [2023]   [May]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] nvme: Increase block size variable size to 32-bit
Date
Increase block size variable size to 32-bit unsigned to be able to
support block devices larger than 32k (starting from 64 KiB).

Physical and logical block size already support unsigned 32-bit.

Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
---

While experimenting and doing code inspection for large block
devices, we found a limitation of a 32 KiB block size due to the bs
variable type. With that limitation and in combination with a large
block device, this results in a kernel BUG when the block layer
attempts to split a block size of 0 bytes.

Increasing the value to 32-bit unsigned, allows to support large block
devices starting from 64 KiB. In addition, this bs variable type
aligns with the queue_limits logical/physical_block_size types.


drivers/nvme/host/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 151b23400ada..b4bc48f2a011 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1835,7 +1835,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
struct nvme_ns *ns, struct nvme_id_ns *id)
{
sector_t capacity = nvme_lba_to_sect(ns, le64_to_cpu(id->nsze));
- unsigned short bs = 1 << ns->lba_shift;
+ u32 bs = 1 << ns->lba_shift;
u32 atomic_bs, phys_bs, io_opt = 0;

/*
--
2.40.1
\
 
 \ /
  Last update: 2023-05-30 17:43    [W:1.463 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site