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 * Flags for xfs_iget() 37 */ 38 #define XFS_IGET_CREATE 0x1 39 #define XFS_IGET_UNTRUSTED 0x2 40 #define XFS_IGET_DONTCACHE 0x4 41 42 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, 43 uint flags, uint lock_flags, xfs_inode_t **ipp); 44 45 void xfs_reclaim_worker(struct work_struct *work); 46 47 int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); 48 int xfs_reclaim_inodes_count(struct xfs_mount *mp); 49 void xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); 50 51 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); 52 53 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); 54 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); 55 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); 56 void xfs_eofblocks_worker(struct work_struct *); 57 58 int xfs_inode_ag_iterator(struct xfs_mount *mp, 59 int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, 60 int flags, void *args), 61 int flags, void *args); 62 int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, 63 int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, 64 int flags, void *args), 65 int flags, void *args, int tag); 66 67 static inline int 68 xfs_fs_eofblocks_from_user( 69 struct xfs_fs_eofblocks *src, 70 struct xfs_eofblocks *dst) 71 { 72 if (src->eof_version != XFS_EOFBLOCKS_VERSION) 73 return EINVAL; 74 75 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) 76 return EINVAL; 77 78 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || 79 memchr_inv(src->pad64, 0, sizeof(src->pad64))) 80 return EINVAL; 81 82 dst->eof_flags = src->eof_flags; 83 dst->eof_prid = src->eof_prid; 84 dst->eof_min_file_size = src->eof_min_file_size; 85 86 dst->eof_uid = INVALID_UID; 87 if (src->eof_flags & XFS_EOF_FLAGS_UID) { 88 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); 89 if (!uid_valid(dst->eof_uid)) 90 return EINVAL; 91 } 92 93 dst->eof_gid = INVALID_GID; 94 if (src->eof_flags & XFS_EOF_FLAGS_GID) { 95 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); 96 if (!gid_valid(dst->eof_gid)) 97 return EINVAL; 98 } 99 return 0; 100 } 101 102 #endif 103