forked from mirrors/linux
fd97fe1112
Port the copy on write fork repair to realtime files. Signed-off-by: "Darrick J. Wong" <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_RTALLOC_H__
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#define __XFS_RTALLOC_H__
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/* kernel only definitions and functions */
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struct xfs_mount;
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struct xfs_trans;
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#ifdef CONFIG_XFS_RT
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/* rtgroup superblock initialization */
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int xfs_rtmount_readsb(struct xfs_mount *mp);
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void xfs_rtmount_freesb(struct xfs_mount *mp);
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/*
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* Initialize realtime fields in the mount structure.
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*/
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int /* error */
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xfs_rtmount_init(
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struct xfs_mount *mp); /* file system mount structure */
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void
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xfs_rtunmount_inodes(
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struct xfs_mount *mp);
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/*
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* Get the bitmap and summary inodes into the mount structure
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* at mount time.
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*/
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int /* error */
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xfs_rtmount_inodes(
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struct xfs_mount *mp); /* file system mount structure */
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void xfs_rt_resv_free(struct xfs_mount *mp);
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int xfs_rt_resv_init(struct xfs_mount *mp);
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/*
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* Grow the realtime area of the filesystem.
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*/
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int
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xfs_growfs_rt(
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struct xfs_mount *mp, /* file system mount structure */
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xfs_growfs_rt_t *in); /* user supplied growfs struct */
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int xfs_rtalloc_reinit_frextents(struct xfs_mount *mp);
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int xfs_growfs_check_rtgeom(const struct xfs_mount *mp, xfs_rfsblock_t dblocks,
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xfs_rfsblock_t rblocks, xfs_agblock_t rextsize);
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#else
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# define xfs_growfs_rt(mp,in) (-ENOSYS)
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# define xfs_rtalloc_reinit_frextents(m) (0)
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# define xfs_rtmount_readsb(mp) (0)
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# define xfs_rtmount_freesb(mp) ((void)0)
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static inline int /* error */
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xfs_rtmount_init(
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xfs_mount_t *mp) /* file system mount structure */
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{
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if (mp->m_sb.sb_rblocks == 0)
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return 0;
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xfs_warn(mp, "Not built with CONFIG_XFS_RT");
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return -ENOSYS;
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}
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# define xfs_rtmount_inodes(m) (((mp)->m_sb.sb_rblocks == 0)? 0 : (-ENOSYS))
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# define xfs_rtunmount_inodes(m)
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# define xfs_rt_resv_free(mp) ((void)0)
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# define xfs_rt_resv_init(mp) (0)
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static inline int
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xfs_growfs_check_rtgeom(const struct xfs_mount *mp,
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xfs_rfsblock_t dblocks, xfs_rfsblock_t rblocks,
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xfs_extlen_t rextsize)
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{
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return 0;
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}
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#endif /* CONFIG_XFS_RT */
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int xfs_rtallocate_rtgs(struct xfs_trans *tp, xfs_fsblock_t bno_hint,
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xfs_rtxlen_t minlen, xfs_rtxlen_t maxlen, xfs_rtxlen_t prod,
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bool wasdel, bool initial_user_data, xfs_rtblock_t *bno,
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xfs_extlen_t *blen);
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#endif /* __XFS_RTALLOC_H__ */
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