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xfs: allow unaligned extent records in xfs_bmbt_disk_set_all 

To make life a little simpler make xfs_bmbt_set_all unaligned access
aware so that we can use it directly on the destination buffer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
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 2017-11-03 10:34:45 -07:00 committed by Darrick J. Wong
parent 43518812d2
commit 135dcc10d6
1 changed files with 4 additions and 4 deletions
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8
fs/xfs/libxfs/xfs_bmap_btree.c
View File

@ -199,14 +199,14 @@ xfs_bmbt_disk_set_all(
ASSERT(!(s->br_blockcount & xfs_mask64hi(64-BMBT_BLOCKCOUNT_BITLEN)));
ASSERT(!(s->br_startblock & xfs_mask64hi(64-BMBT_STARTBLOCK_BITLEN)));
r->l0 = cpu_to_be64(
put_unaligned_be64(
((xfs_bmbt_rec_base_t)extent_flag << 63) |
((xfs_bmbt_rec_base_t)s->br_startoff << 9) |
((xfs_bmbt_rec_base_t)s->br_startblock >> 43));
r->l1 = cpu_to_be64(
((xfs_bmbt_rec_base_t)s->br_startblock >> 43), &r->l0);
put_unaligned_be64(
((xfs_bmbt_rec_base_t)s->br_startblock << 21) |
((xfs_bmbt_rec_base_t)s->br_blockcount &
(xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
(xfs_bmbt_rec_base_t)xfs_mask64lo(21)), &r->l1);
}
/*