378f681c4b
Check the inode cache for a particular inode number. If it's in the cache, check that it's not currently being reclaimed. If it's not being reclaimed, return zero if the inode is allocated. This function will be used by various scrubbers to decide if the cache is more up to date than the disk in terms of checking if an inode is allocated. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
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* Copyright (c) 2000-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef XFS_SYNC_H
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#define XFS_SYNC_H 1
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struct xfs_mount;
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struct xfs_perag;
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struct xfs_eofblocks {
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__u32 eof_flags;
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kuid_t eof_uid;
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kgid_t eof_gid;
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prid_t eof_prid;
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__u64 eof_min_file_size;
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};
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#define SYNC_WAIT 0x0001 /* wait for i/o to complete */
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#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */
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/*
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* tags for inode radix tree
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*/
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#define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup
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in xfs_inode_ag_iterator */
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#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
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#define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */
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#define XFS_ICI_COWBLOCKS_TAG 2 /* inode can have cow blocks to gc */
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/*
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* Flags for xfs_iget()
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*/
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#define XFS_IGET_CREATE 0x1
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#define XFS_IGET_UNTRUSTED 0x2
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#define XFS_IGET_DONTCACHE 0x4
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#define XFS_IGET_INCORE 0x8 /* don't read from disk or reinit */
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/*
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* flags for AG inode iterator
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*/
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#define XFS_AGITER_INEW_WAIT 0x1 /* wait on new inodes */
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int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
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uint flags, uint lock_flags, xfs_inode_t **ipp);
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/* recovery needs direct inode allocation capability */
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struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
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void xfs_inode_free(struct xfs_inode *ip);
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void xfs_reclaim_worker(struct work_struct *work);
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int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
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int xfs_reclaim_inodes_count(struct xfs_mount *mp);
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long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
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void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
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void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
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void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
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int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
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int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip);
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void xfs_eofblocks_worker(struct work_struct *);
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void xfs_queue_eofblocks(struct xfs_mount *);
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void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip);
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void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip);
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int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *);
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int xfs_inode_free_quota_cowblocks(struct xfs_inode *ip);
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void xfs_cowblocks_worker(struct work_struct *);
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int xfs_inode_ag_iterator(struct xfs_mount *mp,
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int (*execute)(struct xfs_inode *ip, int flags, void *args),
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int flags, void *args);
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int xfs_inode_ag_iterator_flags(struct xfs_mount *mp,
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int (*execute)(struct xfs_inode *ip, int flags, void *args),
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int flags, void *args, int iter_flags);
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int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
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int (*execute)(struct xfs_inode *ip, int flags, void *args),
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int flags, void *args, int tag);
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static inline int
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xfs_fs_eofblocks_from_user(
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struct xfs_fs_eofblocks *src,
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struct xfs_eofblocks *dst)
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{
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if (src->eof_version != XFS_EOFBLOCKS_VERSION)
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return -EINVAL;
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if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
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return -EINVAL;
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if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
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memchr_inv(src->pad64, 0, sizeof(src->pad64)))
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return -EINVAL;
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dst->eof_flags = src->eof_flags;
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dst->eof_prid = src->eof_prid;
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dst->eof_min_file_size = src->eof_min_file_size;
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dst->eof_uid = INVALID_UID;
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if (src->eof_flags & XFS_EOF_FLAGS_UID) {
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dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
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if (!uid_valid(dst->eof_uid))
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return -EINVAL;
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}
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dst->eof_gid = INVALID_GID;
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if (src->eof_flags & XFS_EOF_FLAGS_GID) {
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dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
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if (!gid_valid(dst->eof_gid))
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return -EINVAL;
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}
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return 0;
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}
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int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp,
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xfs_ino_t ino, bool *inuse);
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#endif
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