Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux
b90f6ff080
Only MD_SB_CHANGE_PENDING should be used to wait for transition from
clean to dirty. Checking also MD_SB_CHANGE_CLEAN is unnecessary and can
race with e.g. md_do_sync(). This sporadically causes a hang when
changing consistency policy during resync:
INFO: task mdadm:6183 blocked for more than 30 seconds.
Not tainted 4.14.0-rc3+ #391
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
mdadm D12752 6183 6022 0x00000000
Call Trace:
__schedule+0x93f/0x990
schedule+0x6b/0x90
md_allow_write+0x100/0x130 [md_mod]
? do_wait_intr_irq+0x90/0x90
resize_stripes+0x3a/0x5b0 [raid456]
? kernfs_fop_write+0xbe/0x180
raid5_change_consistency_policy+0xa6/0x200 [raid456]
consistency_policy_store+0x2e/0x70 [md_mod]
md_attr_store+0x90/0xc0 [md_mod]
sysfs_kf_write+0x42/0x50
kernfs_fop_write+0x119/0x180
__vfs_write+0x28/0x110
? rcu_sync_lockdep_assert+0x12/0x60
? __sb_start_write+0x15a/0x1c0
? vfs_write+0xa3/0x1a0
vfs_write+0xb4/0x1a0
SyS_write+0x49/0xa0
entry_SYSCALL_64_fastpath+0x18/0xad
Fixes:
|
||
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.