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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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608eb3cee7
Add a xbitmap_hweight helper function so that we can get rid of the open-coded loop. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#ifndef __XFS_SCRUB_BITMAP_H__
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#define __XFS_SCRUB_BITMAP_H__
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struct xbitmap_range {
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struct list_head list;
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uint64_t start;
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uint64_t len;
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};
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struct xbitmap {
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struct list_head list;
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};
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void xbitmap_init(struct xbitmap *bitmap);
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void xbitmap_destroy(struct xbitmap *bitmap);
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#define for_each_xbitmap_extent(bex, n, bitmap) \
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list_for_each_entry_safe((bex), (n), &(bitmap)->list, list)
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#define for_each_xbitmap_block(b, bex, n, bitmap) \
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list_for_each_entry_safe((bex), (n), &(bitmap)->list, list) \
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for ((b) = (bex)->start; (b) < (bex)->start + (bex)->len; (b)++)
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int xbitmap_set(struct xbitmap *bitmap, uint64_t start, uint64_t len);
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int xbitmap_disunion(struct xbitmap *bitmap, struct xbitmap *sub);
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int xbitmap_set_btcur_path(struct xbitmap *bitmap,
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struct xfs_btree_cur *cur);
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int xbitmap_set_btblocks(struct xbitmap *bitmap,
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struct xfs_btree_cur *cur);
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uint64_t xbitmap_hweight(struct xbitmap *bitmap);
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#endif /* __XFS_SCRUB_BITMAP_H__ */
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