Commit 47bd6d34 authored Jan 25, 2021 by Darrick J. Wong

xfs: expose the blockgc workqueue knobs publicly



Expose the workqueue sysfs knobs for the speculative preallocation gc
workers on all kernels, and update the sysadmin information.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

parent 894ecacf

Documentation/admin-guide/xfs.rst

+3 −0

Original line number	Diff line number	Diff line
		@@ -518,6 +518,9 @@ and the short name of the data device. They all can be found in:
		================ ===========
		xfs_iwalk-$pid Inode scans of the entire filesystem. Currently limited to
		mount time quotacheck.
		xfs-blockgc Background garbage collection of disk space that have been
		speculatively allocated beyond EOF or for staging copy on
		write operations.
		================ ===========

		For example, the knobs for the quotacheck workqueue for /dev/nvme0n1 would be

fs/xfs/xfs_super.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -520,7 +520,7 @@ xfs_init_mount_workqueues(
		goto out_destroy_cil;

		mp->m_blockgc_workqueue = alloc_workqueue("xfs-blockgc/%s",
		XFS_WQFLAGS(WQ_UNBOUND \| WQ_FREEZABLE \| WQ_MEM_RECLAIM),
		WQ_SYSFS \| WQ_UNBOUND \| WQ_FREEZABLE \| WQ_MEM_RECLAIM,
		0, mp->m_super->s_id);
		if (!mp->m_blockgc_workqueue)
		goto out_destroy_reclaim;