Retire z_nr_znodes #15274
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Retire z_nr_znodes #15274
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equivalent change can be made for linux |
amotin
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Sep 15, 2023
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It seems z_nr_znodes was added on Linux 12 years ago to implement zpl_nr_cached_objects() VFS callback. I don't see it there any more. FreeBSD code seems just copied it without particular reason during OpenZFS integration. I am not sure removing it is a big saving, but if it makes sense in your bigger plans and we won't need it back, I'm fine about removing it, it is surely not needed now.
Linux code is identical, so I'd do it for both platforms in once PR to not diverge. Once CI passes it, it should probably be fine.
Added in ab26409 ("Linux 3.1 compat, super_block->s_shrink"), with the only consumer which needed the count getting retired in 066e825 ("Linux compat: Minimum kernel version 3.10"). The counter gets in the way of not maintaining the list to begin with. Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
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freebsd-git
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Sep 16, 2023
It is not needed and is going away soon(tm), facilitating other changes. See openzfs/zfs#15274
behlendorf
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Sep 18, 2023
behlendorf
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Sep 19, 2023
Added in ab26409 ("Linux 3.1 compat, super_block->s_shrink"), with the only consumer which needed the count getting retired in 066e825 ("Linux compat: Minimum kernel version 3.10"). The counter gets in the way of not maintaining the list to begin with. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Closes openzfs#15274
behlendorf
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Added in ab26409 ("Linux 3.1 compat, super_block->s_shrink"), with the only consumer which needed the count getting retired in 066e825 ("Linux compat: Minimum kernel version 3.10"). The counter gets in the way of not maintaining the list to begin with. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Closes #15274
lundman
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Dec 12, 2023
Added in ab26409 ("Linux 3.1 compat, super_block->s_shrink"), with the only consumer which needed the count getting retired in 066e825 ("Linux compat: Minimum kernel version 3.10"). The counter gets in the way of not maintaining the list to begin with. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Closes openzfs#15274
bsdjhb
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Feb 3, 2024
It is not needed and is going away soon(tm), facilitating other changes. See openzfs/zfs#15274
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