From: Nicholas Bellinger Date: Mon, 18 Mar 2013 20:15:57 +0000 (-0700) Subject: target/file: Bump FD_MAX_SECTORS to 2048 to handle 1M sized I/Os X-Git-Tag: v3.8.5~44 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=12fe6f137e304b53e6104880b3a25a2919f912a9;p=karo-tx-linux.git target/file: Bump FD_MAX_SECTORS to 2048 to handle 1M sized I/Os commit f002a24388cc460c8a9be7d446a9871f7c9d52b6 upstream. This patch bumps the default FILEIO backend FD_MAX_SECTORS value from 1024 -> 2048 in order to allow block_size=512 to handle 1M sized I/Os. The current default rejects I/Os larger than 512K in sbc_parse_cdb(): [12015.915146] SCSI OP 2ah with too big sectors 1347 exceeds backend hw_max_sectors: 1024 [12015.977744] SCSI OP 2ah with too big sectors 2048 exceeds backend hw_max_sectors: 1024 This issue is present in >= v3.5 based kernels, introduced after the removal of se_task logic. Reported-by: Viljami Ilola Signed-off-by: Nicholas Bellinger Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/target/target_core_file.h b/drivers/target/target_core_file.h index bc02b018ae46..37ffc5bd2399 100644 --- a/drivers/target/target_core_file.h +++ b/drivers/target/target_core_file.h @@ -7,7 +7,7 @@ #define FD_DEVICE_QUEUE_DEPTH 32 #define FD_MAX_DEVICE_QUEUE_DEPTH 128 #define FD_BLOCKSIZE 512 -#define FD_MAX_SECTORS 1024 +#define FD_MAX_SECTORS 2048 #define RRF_EMULATE_CDB 0x01 #define RRF_GOT_LBA 0x02