Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LIBXFS_ZONES_H
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#define _LIBXFS_ZONES_H
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struct xfs_rtgroup;
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/*
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* In order to guarantee forward progress for GC we need to reserve at least
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* two zones: one that will be used for moving data into and one spare zone
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* making sure that we have enough space to relocate a nearly-full zone.
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* To allow for slightly sloppy accounting for when we need to reserve the
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* second zone, we actually reserve three as that is easier than doing fully
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* accurate bookkeeping.
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*/
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#define XFS_GC_ZONES 3U
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/*
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* In addition we need two zones for user writes, one open zone for writing
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* and one to still have available blocks without resetting the open zone
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* when data in the open zone has been freed.
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*/
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#define XFS_RESERVED_ZONES (XFS_GC_ZONES + 1)
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#define XFS_MIN_ZONES (XFS_RESERVED_ZONES + 1)
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/*
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* Always keep one zone out of the general open zone pool to allow for GC to
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* happen while other writers are waiting for free space.
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*/
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#define XFS_OPEN_GC_ZONES 1U
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#define XFS_MIN_OPEN_ZONES (XFS_OPEN_GC_ZONES + 1U)
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/*
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* For zoned devices that do not have a limit on the number of open zones, and
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* for regular devices using the zoned allocator, use the most common SMR disks
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* limit (128) as the default limit on the number of open zones.
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*/
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#define XFS_DEFAULT_MAX_OPEN_ZONES 128
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bool xfs_zone_validate(struct blk_zone *zone, struct xfs_rtgroup *rtg,
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xfs_rgblock_t *write_pointer);
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#endif /* _LIBXFS_ZONES_H */
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