Displaying 3 results from an estimated 3 matches for "rd_size".
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r_size
2012 Mar 25
3
attempt to access beyond end of device and livelock
...g
dataloss; when this occurs, filesystem writeback becomes catatonic due
to continual resubmission.
The reproducer is quite simple [2]. Hope this proves useful...
Thanks,
Daniel
--- [1]
attempt to access beyond end of device
ram0: rw=129, want=8452072, limit=4096000
...
--- [2]
modprobe brd rd_size=2048000 (or boot with ramdisk_size=2048000)
mkfs.btrfs -m raid0 /dev/ram0 /dev/ram1
mount /dev/ram0 /mnt -o discard
fio testcase
umount /mnt
--- [3] testcase
[global]
directory=/mnt
rw=randread
size=256m
ioengine=libaio
iodepth=4
invalidate=1
direct=1
[bgwriter]
rw=randwrite
iodepth=32
[queryA]...
2018 May 23
3
[PATCH] block drivers/block: Use octal not symbolic permissions
...truct block_device_operations brd_fops = {
* And now the modules code and kernel interface.
*/
static int rd_nr = CONFIG_BLK_DEV_RAM_COUNT;
-module_param(rd_nr, int, S_IRUGO);
+module_param(rd_nr, int, 0444);
MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices");
unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
-module_param(rd_size, ulong, S_IRUGO);
+module_param(rd_size, ulong, 0444);
MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");
static int max_part = 1;
-module_param(max_part, int, S_IRUGO);
+module_param(max_part, int, 0444);
MODULE_PARM_DESC(...
2018 May 23
3
[PATCH] block drivers/block: Use octal not symbolic permissions
...truct block_device_operations brd_fops = {
* And now the modules code and kernel interface.
*/
static int rd_nr = CONFIG_BLK_DEV_RAM_COUNT;
-module_param(rd_nr, int, S_IRUGO);
+module_param(rd_nr, int, 0444);
MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices");
unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
-module_param(rd_size, ulong, S_IRUGO);
+module_param(rd_size, ulong, 0444);
MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");
static int max_part = 1;
-module_param(max_part, int, S_IRUGO);
+module_param(max_part, int, 0444);
MODULE_PARM_DESC(...