xfs: add a xefi_entry helper
Add a helper to translate from the item list head to the xfs_extent_free_item structure and use it so shorten assignments and avoid the need for extra local variables. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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@ -303,6 +303,11 @@ static const struct xfs_item_ops xfs_efd_item_ops = {
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.iop_intent = xfs_efd_item_intent,
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};
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static inline struct xfs_extent_free_item *xefi_entry(const struct list_head *e)
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{
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return list_entry(e, struct xfs_extent_free_item, xefi_list);
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}
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/*
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* Fill the EFD with all extents from the EFI when we need to roll the
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* transaction and continue with a new EFI.
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@ -338,11 +343,8 @@ xfs_extent_free_diff_items(
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const struct list_head *a,
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const struct list_head *b)
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{
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struct xfs_extent_free_item *ra;
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struct xfs_extent_free_item *rb;
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ra = container_of(a, struct xfs_extent_free_item, xefi_list);
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rb = container_of(b, struct xfs_extent_free_item, xefi_list);
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struct xfs_extent_free_item *ra = xefi_entry(a);
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struct xfs_extent_free_item *rb = xefi_entry(b);
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return ra->xefi_pag->pag_agno - rb->xefi_pag->pag_agno;
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}
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@ -444,7 +446,7 @@ xfs_extent_free_finish_item(
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struct xfs_btree_cur **state)
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{
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struct xfs_owner_info oinfo = { };
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struct xfs_extent_free_item *xefi;
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struct xfs_extent_free_item *xefi = xefi_entry(item);
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struct xfs_efd_log_item *efdp = EFD_ITEM(done);
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struct xfs_mount *mp = tp->t_mountp;
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struct xfs_extent *extp;
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@ -452,7 +454,6 @@ xfs_extent_free_finish_item(
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xfs_agblock_t agbno;
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int error = 0;
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xefi = container_of(item, struct xfs_extent_free_item, xefi_list);
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agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock);
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oinfo.oi_owner = xefi->xefi_owner;
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@ -504,9 +505,7 @@ STATIC void
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xfs_extent_free_cancel_item(
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struct list_head *item)
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{
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struct xfs_extent_free_item *xefi;
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xefi = container_of(item, struct xfs_extent_free_item, xefi_list);
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struct xfs_extent_free_item *xefi = xefi_entry(item);
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xfs_extent_free_put_group(xefi);
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kmem_cache_free(xfs_extfree_item_cache, xefi);
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@ -526,14 +525,13 @@ xfs_agfl_free_finish_item(
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struct xfs_owner_info oinfo = { };
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struct xfs_mount *mp = tp->t_mountp;
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struct xfs_efd_log_item *efdp = EFD_ITEM(done);
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struct xfs_extent_free_item *xefi;
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struct xfs_extent_free_item *xefi = xefi_entry(item);
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struct xfs_extent *extp;
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struct xfs_buf *agbp;
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int error;
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xfs_agblock_t agbno;
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uint next_extent;
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xefi = container_of(item, struct xfs_extent_free_item, xefi_list);
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ASSERT(xefi->xefi_blockcount == 1);
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agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock);
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oinfo.oi_owner = xefi->xefi_owner;
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