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xfs: pack holes in xfs_defer_ops and xfs_trans

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Both structures have holes due to member alignment. Move dop_low to
the end of xfs_defer ops to sanitize the cache line alignment and
move t_flags to save 8 bytes in xfs_trans.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bill O'Donnell <billodo@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:
Brian Foster
2018-07-24 13:43:11 -07:00
committed by Darrick J. Wong
parent 509308b413
commit 44fd294681
2 changed files with 3 additions and 2 deletions
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3
fs/xfs/libxfs/xfs_defer.h
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@@ -49,13 +49,14 @@ enum xfs_defer_ops_type {
#define XFS_DEFER_OPS_NR_BUFS 2 /* join up to two buffers */
struct xfs_defer_ops {
bool dop_low; /* alloc in low mode */
struct list_head dop_intake; /* unlogged pending work */
struct list_head dop_pending; /* logged pending work */
/* relog these with each roll */
struct xfs_inode *dop_inodes[XFS_DEFER_OPS_NR_INODES];
struct xfs_buf *dop_bufs[XFS_DEFER_OPS_NR_BUFS];
bool dop_low; /* alloc in low mode */
};
void xfs_defer_add(struct xfs_defer_ops *dop, enum xfs_defer_ops_type type,