1 /* 2 * Copyright (c) 2000-2006 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef XFS_SYNC_H 19 #define XFS_SYNC_H 1 20 21 struct xfs_mount; 22 struct xfs_perag; 23 24 struct xfs_eofblocks { 25 __u32 eof_flags; 26 kuid_t eof_uid; 27 kgid_t eof_gid; 28 prid_t eof_prid; 29 __u64 eof_min_file_size; 30 }; 31 32 #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ 33 #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ 34 35 /* 36 * tags for inode radix tree 37 */ 38 #define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup 39 in xfs_inode_ag_iterator */ 40 #define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */ 41 #define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */ 42 #define XFS_ICI_COWBLOCKS_TAG 2 /* inode can have cow blocks to gc */ 43 44 /* 45 * Flags for xfs_iget() 46 */ 47 #define XFS_IGET_CREATE 0x1 48 #define XFS_IGET_UNTRUSTED 0x2 49 #define XFS_IGET_DONTCACHE 0x4 50 #define XFS_IGET_INCORE 0x8 /* don't read from disk or reinit */ 51 52 /* 53 * flags for AG inode iterator 54 */ 55 #define XFS_AGITER_INEW_WAIT 0x1 /* wait on new inodes */ 56 57 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, 58 uint flags, uint lock_flags, xfs_inode_t **ipp); 59 60 /* recovery needs direct inode allocation capability */ 61 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino); 62 void xfs_inode_free(struct xfs_inode *ip); 63 64 void xfs_reclaim_worker(struct work_struct *work); 65 66 int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); 67 int xfs_reclaim_inodes_count(struct xfs_mount *mp); 68 long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); 69 70 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); 71 72 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); 73 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); 74 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); 75 int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip); 76 void xfs_eofblocks_worker(struct work_struct *); 77 void xfs_queue_eofblocks(struct xfs_mount *); 78 79 void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip); 80 void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip); 81 int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *); 82 int xfs_inode_free_quota_cowblocks(struct xfs_inode *ip); 83 void xfs_cowblocks_worker(struct work_struct *); 84 void xfs_queue_cowblocks(struct xfs_mount *); 85 86 int xfs_inode_ag_iterator(struct xfs_mount *mp, 87 int (*execute)(struct xfs_inode *ip, int flags, void *args), 88 int flags, void *args); 89 int xfs_inode_ag_iterator_flags(struct xfs_mount *mp, 90 int (*execute)(struct xfs_inode *ip, int flags, void *args), 91 int flags, void *args, int iter_flags); 92 int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, 93 int (*execute)(struct xfs_inode *ip, int flags, void *args), 94 int flags, void *args, int tag); 95 96 static inline int 97 xfs_fs_eofblocks_from_user( 98 struct xfs_fs_eofblocks *src, 99 struct xfs_eofblocks *dst) 100 { 101 if (src->eof_version != XFS_EOFBLOCKS_VERSION) 102 return -EINVAL; 103 104 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) 105 return -EINVAL; 106 107 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || 108 memchr_inv(src->pad64, 0, sizeof(src->pad64))) 109 return -EINVAL; 110 111 dst->eof_flags = src->eof_flags; 112 dst->eof_prid = src->eof_prid; 113 dst->eof_min_file_size = src->eof_min_file_size; 114 115 dst->eof_uid = INVALID_UID; 116 if (src->eof_flags & XFS_EOF_FLAGS_UID) { 117 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); 118 if (!uid_valid(dst->eof_uid)) 119 return -EINVAL; 120 } 121 122 dst->eof_gid = INVALID_GID; 123 if (src->eof_flags & XFS_EOF_FLAGS_GID) { 124 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); 125 if (!gid_valid(dst->eof_gid)) 126 return -EINVAL; 127 } 128 return 0; 129 } 130 131 int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp, 132 xfs_ino_t ino, bool *inuse); 133 134 #endif 135