xfs: use and update the finobt on inode allocation

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Replace xfs_dialloc_ag() with an implementation that looks for a
record in the finobt. The finobt only tracks records with at least
one free inode. This eliminates the need for the intra-ag scan in
the original algorithm. Once the inode is allocated, update the
finobt appropriately (possibly removing the record) as well as the
inobt.

Move the original xfs_dialloc_ag() algorithm to
xfs_dialloc_ag_inobt() and fall back as such if finobt support is
not enabled.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

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Brian Foster 2014-04-24 16:00:53 +10:00 • committed by Dave Chinner

parent 0aa0a756ec

commit 6dd8638e4e

1 changed files with 290 additions and 5 deletions

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fs/xfs/xfs_ialloc.c

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