1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2006 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef XFS_SYNC_H 7 #define XFS_SYNC_H 1 8 9 struct xfs_mount; 10 struct xfs_perag; 11 12 struct xfs_eofblocks { 13 __u32 eof_flags; 14 kuid_t eof_uid; 15 kgid_t eof_gid; 16 prid_t eof_prid; 17 __u64 eof_min_file_size; 18 }; 19 20 #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ 21 #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ 22 23 /* 24 * tags for inode radix tree 25 */ 26 #define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup 27 in xfs_inode_ag_iterator */ 28 #define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */ 29 #define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */ 30 #define XFS_ICI_COWBLOCKS_TAG 2 /* inode can have cow blocks to gc */ 31 32 /* 33 * Flags for xfs_iget() 34 */ 35 #define XFS_IGET_CREATE 0x1 36 #define XFS_IGET_UNTRUSTED 0x2 37 #define XFS_IGET_DONTCACHE 0x4 38 #define XFS_IGET_INCORE 0x8 /* don't read from disk or reinit */ 39 40 /* 41 * flags for AG inode iterator 42 */ 43 #define XFS_AGITER_INEW_WAIT 0x1 /* wait on new inodes */ 44 45 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, 46 uint flags, uint lock_flags, xfs_inode_t **ipp); 47 48 /* recovery needs direct inode allocation capability */ 49 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino); 50 void xfs_inode_free(struct xfs_inode *ip); 51 52 void xfs_reclaim_worker(struct work_struct *work); 53 54 int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); 55 int xfs_reclaim_inodes_count(struct xfs_mount *mp); 56 long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); 57 58 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); 59 60 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); 61 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); 62 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); 63 int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip); 64 void xfs_eofblocks_worker(struct work_struct *); 65 void xfs_queue_eofblocks(struct xfs_mount *); 66 67 void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip); 68 void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip); 69 int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *); 70 int xfs_inode_free_quota_cowblocks(struct xfs_inode *ip); 71 void xfs_cowblocks_worker(struct work_struct *); 72 void xfs_queue_cowblocks(struct xfs_mount *); 73 74 int xfs_inode_ag_iterator(struct xfs_mount *mp, 75 int (*execute)(struct xfs_inode *ip, int flags, void *args), 76 int flags, void *args); 77 int xfs_inode_ag_iterator_flags(struct xfs_mount *mp, 78 int (*execute)(struct xfs_inode *ip, int flags, void *args), 79 int flags, void *args, int iter_flags); 80 int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, 81 int (*execute)(struct xfs_inode *ip, int flags, void *args), 82 int flags, void *args, int tag); 83 84 static inline int 85 xfs_fs_eofblocks_from_user( 86 struct xfs_fs_eofblocks *src, 87 struct xfs_eofblocks *dst) 88 { 89 if (src->eof_version != XFS_EOFBLOCKS_VERSION) 90 return -EINVAL; 91 92 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) 93 return -EINVAL; 94 95 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || 96 memchr_inv(src->pad64, 0, sizeof(src->pad64))) 97 return -EINVAL; 98 99 dst->eof_flags = src->eof_flags; 100 dst->eof_prid = src->eof_prid; 101 dst->eof_min_file_size = src->eof_min_file_size; 102 103 dst->eof_uid = INVALID_UID; 104 if (src->eof_flags & XFS_EOF_FLAGS_UID) { 105 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); 106 if (!uid_valid(dst->eof_uid)) 107 return -EINVAL; 108 } 109 110 dst->eof_gid = INVALID_GID; 111 if (src->eof_flags & XFS_EOF_FLAGS_GID) { 112 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); 113 if (!gid_valid(dst->eof_gid)) 114 return -EINVAL; 115 } 116 return 0; 117 } 118 119 int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp, 120 xfs_ino_t ino, bool *inuse); 121 122 void xfs_icache_disable_reclaim(struct xfs_mount *mp); 123 void xfs_icache_enable_reclaim(struct xfs_mount *mp); 124 125 #endif 126