xfs: break up xfs_buf_find() into individual pieces

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xfs_buf_find() is made up of three main parts: lookup, insert and
locking. The interactions with xfs_buf_get_map() require it to be
called twice - once for a pure lookup, and again on lookup failure
so the insert path can be run. We want to simplify this down a lot,
so split it into a fast path lookup, a slow path insert and a "lock
the found buffer" helper. This will then let us integrate these
operations more effectively into xfs_buf_get_map() in future
patches.

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

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Dave Chinner 2022-07-14 12:02:46 +10:00 • committed by Dave Chinner

parent 85c73bf726

commit de67dc5754

1 changed files with 104 additions and 54 deletions

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fs/xfs/xfs_buf.c

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