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 #ifdef __KERNEL__ 22 23 struct xfs_mount; 24 struct xfs_inode; 25 struct xfs_perag; 26 struct xfs_bmalloca; 27 28 #ifdef XFS_FILESTREAMS_TRACE 29 #define XFS_FSTRM_KTRACE_INFO 1 30 #define XFS_FSTRM_KTRACE_AGSCAN 2 31 #define XFS_FSTRM_KTRACE_AGPICK1 3 32 #define XFS_FSTRM_KTRACE_AGPICK2 4 33 #define XFS_FSTRM_KTRACE_UPDATE 5 34 #define XFS_FSTRM_KTRACE_FREE 6 35 #define XFS_FSTRM_KTRACE_ITEM_LOOKUP 7 36 #define XFS_FSTRM_KTRACE_ASSOCIATE 8 37 #define XFS_FSTRM_KTRACE_MOVEAG 9 38 #define XFS_FSTRM_KTRACE_ORPHAN 10 39 40 #define XFS_FSTRM_KTRACE_SIZE 16384 41 extern ktrace_t *xfs_filestreams_trace_buf; 42 43 #endif 44 45 /* allocation selection flags */ 46 typedef enum xfs_fstrm_alloc { 47 XFS_PICK_USERDATA = 1, 48 XFS_PICK_LOWSPACE = 2, 49 } xfs_fstrm_alloc_t; 50 51 /* prototypes for filestream.c */ 52 int xfs_filestream_init(void); 53 void xfs_filestream_uninit(void); 54 int xfs_filestream_mount(struct xfs_mount *mp); 55 void xfs_filestream_unmount(struct xfs_mount *mp); 56 xfs_agnumber_t xfs_filestream_lookup_ag(struct xfs_inode *ip); 57 int xfs_filestream_associate(struct xfs_inode *dip, struct xfs_inode *ip); 58 void xfs_filestream_deassociate(struct xfs_inode *ip); 59 int xfs_filestream_new_ag(struct xfs_bmalloca *ap, xfs_agnumber_t *agp); 60 61 62 /* filestreams for the inode? */ 63 static inline int 64 xfs_inode_is_filestream( 65 struct xfs_inode *ip) 66 { 67 return (ip->i_mount->m_flags & XFS_MOUNT_FILESTREAMS) || 68 xfs_iflags_test(ip, XFS_IFILESTREAM) || 69 (ip->i_d.di_flags & XFS_DIFLAG_FILESTREAM); 70 } 71 72 #endif /* __KERNEL__ */ 73 74 #endif /* __XFS_FILESTREAM_H__ */ 75