gfs2: allow quota_check and inplace_reserve to return available blocks

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struct gfs2_alloc_parms is passed to gfs2_quota_check() and
gfs2_inplace_reserve() with ap->target containing the number of
blocks being requested for allocation in the current operation.

We add a new field to struct gfs2_alloc_parms called 'allowed'.
gfs2_quota_check() and gfs2_inplace_reserve() return the max
blocks allowed by quota and the max blocks allowed by the chosen
rgrp respectively in 'allowed'.

A new field 'min_target', when non-zero, tells gfs2_quota_check()
and gfs2_inplace_reserve() to not return -EDQUOT/-ENOSPC when
there are atleast 'min_target' blocks allowable/available. The
assumption is that the caller is ok with just 'min_target' blocks
and will likely proceed with allocating them.

Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>

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This commit is contained in:

Abhi Das 2015-03-18 12:04:37 -05:00 • committed by Bob Peterson

parent b8fbf471ed

commit 25435e5ed6

4 changed files with 58 additions and 19 deletions

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2

fs/gfs2/incore.h

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52

fs/gfs2/quota.c

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20

fs/gfs2/rgrp.c

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3

fs/gfs2/rgrp.h

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