xfs: make for_each_perag... a first class citizen

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for_each_perag_tag() is defined in xfs_icache.c for local use.
Promote this to xfs_ag.h and define equivalent iteration functions
so that we can use them to iterate AGs instead to replace open coded
perag walks and perag lookups.

We also convert as many of the straight forward open coded AG walks
to use these iterators as possible. Anything that is not a direct
conversion to an iterator is ignored and will be updated in future
commits.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

...

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Dave Chinner 2021-06-02 10:48:24 +10:00 • committed by Dave Chinner

parent 07b6403a68

commit f250eedcf7

6 changed files with 39 additions and 52 deletions

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17

fs/xfs/libxfs/xfs_ag.h

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40

fs/xfs/scrub/fscounters.c

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7

fs/xfs/xfs_extent_busy.c

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8

fs/xfs/xfs_fsops.c

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4

fs/xfs/xfs_health.c

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15

fs/xfs/xfs_icache.c

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