mainlining shenanigans
4f99484d27
Otherwise, pending checkpoints can contribute a race condition to give a
quota warning.
- Thread - checkpoint thread
add checkpoints to the list
do_remount()
down_write(&sb->s_umount);
f2fs_remount()
block_operations()
down_read_trylock(&sb->s_umount) = 0
up_write(&sb->s_umount);
f2fs_quota_sync()
dquot_writeback_dquots()
WARN_ON_ONCE(!rwsem_is_locked(&sb->s_umount));
Or,
do_remount()
down_write(&sb->s_umount);
f2fs_remount()
create a ckpt thread
f2fs_enable_checkpoint() adds checkpoints
wait for f2fs_sync_fs()
trigger another pending checkpoint
block_operations()
down_read_trylock(&sb->s_umount) = 0
up_write(&sb->s_umount);
f2fs_quota_sync()
dquot_writeback_dquots()
WARN_ON_ONCE(!rwsem_is_locked(&sb->s_umount));
Cc: stable@vger.kernel.org
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.