1 /* 2 * Copyright (c) 2006-2007 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_FILESTREAM_H__ 19 #define __XFS_FILESTREAM_H__ 20 21 struct xfs_mount; 22 struct xfs_inode; 23 struct xfs_perag; 24 struct xfs_bmalloca; 25 26 #ifdef XFS_FILESTREAMS_TRACE 27 #define XFS_FSTRM_KTRACE_INFO 1 28 #define XFS_FSTRM_KTRACE_AGSCAN 2 29 #define XFS_FSTRM_KTRACE_AGPICK1 3 30 #define XFS_FSTRM_KTRACE_AGPICK2 4 31 #define XFS_FSTRM_KTRACE_UPDATE 5 32 #define XFS_FSTRM_KTRACE_FREE 6 33 #define XFS_FSTRM_KTRACE_ITEM_LOOKUP 7 34 #define XFS_FSTRM_KTRACE_ASSOCIATE 8 35 #define XFS_FSTRM_KTRACE_MOVEAG 9 36 #define XFS_FSTRM_KTRACE_ORPHAN 10 37 38 #define XFS_FSTRM_KTRACE_SIZE 16384 39 extern ktrace_t *xfs_filestreams_trace_buf; 40 41 #endif 42 43 /* allocation selection flags */ 44 typedef enum xfs_fstrm_alloc { 45 XFS_PICK_USERDATA = 1, 46 XFS_PICK_LOWSPACE = 2, 47 } xfs_fstrm_alloc_t; 48 49 /* prototypes for filestream.c */ 50 int xfs_filestream_init(void); 51 void xfs_filestream_uninit(void); 52 int xfs_filestream_mount(struct xfs_mount *mp); 53 void xfs_filestream_unmount(struct xfs_mount *mp); 54 xfs_agnumber_t xfs_filestream_lookup_ag(struct xfs_inode *ip); 55 int xfs_filestream_associate(struct xfs_inode *dip, struct xfs_inode *ip); 56 void xfs_filestream_deassociate(struct xfs_inode *ip); 57 int xfs_filestream_new_ag(struct xfs_bmalloca *ap, xfs_agnumber_t *agp); 58 59 60 /* filestreams for the inode? */ 61 static inline int 62 xfs_inode_is_filestream( 63 struct xfs_inode *ip) 64 { 65 return (ip->i_mount->m_flags & XFS_MOUNT_FILESTREAMS) || 66 xfs_iflags_test(ip, XFS_IFILESTREAM) || 67 (ip->i_d.di_flags & XFS_DIFLAG_FILESTREAM); 68 } 69 70 #endif /* __XFS_FILESTREAM_H__ */ 71