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xfs: remove the agfl_bno member from struct xfs_agfl

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struct xfs_agfl is a header in front of the AGFL entries that exists
for CRC enabled file systems.  For not CRC enabled file systems the AGFL
is simply a list of agbno.  Make the CRC case similar to that by just
using the list behind the new header.  This indirectly solves a problem
with modern gcc versions that warn about taking addresses of packed
structures (and we have to pack the AGFL given that gcc rounds up
structure sizes).  Also replace the helper macro to get from a buffer
with an inline function in xfs_alloc.h to make the code easier to
read.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2020-03-10 08:57:28 -07:00 • committed by Darrick J. Wong
commit 183606d824
5 changed files with 17 additions and 13 deletions
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