/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_RW_H__
#define __XFS_RW_H__
struct xfs_mount;
/*
- * Maximum count of bmaps used by read and write paths.
- */
-#define XFS_MAX_RW_NBMAPS 4
-
-/*
- * Counts of readahead buffers to use based on physical memory size.
- * None of these should be more than XFS_MAX_RW_NBMAPS.
- */
-#define XFS_RW_NREADAHEAD_16MB 2
-#define XFS_RW_NREADAHEAD_32MB 3
-#define XFS_RW_NREADAHEAD_K32 4
-#define XFS_RW_NREADAHEAD_K64 4
-
-/*
- * Maximum size of a buffer that we\'ll map. Making this
- * too big will degrade performance due to the number of
- * pages which need to be gathered. Making it too small
- * will prevent us from doing large I/O\'s to hardware that
- * needs it.
- *
- * This is currently set to 512 KB.
- */
-#define XFS_MAX_BMAP_LEN_BB 1024
-#define XFS_MAX_BMAP_LEN_BYTES 524288
-
-/*
* Convert the given file system block to a disk block.
* We have to treat it differently based on whether the
* file is a real time file or not, because the bmap code
* does.
*/
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_DB)
-xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
-#define XFS_FSB_TO_DB(ip,fsb) xfs_fsb_to_db(ip,fsb)
-#else
-#define XFS_FSB_TO_DB(ip,fsb) \
- (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) ? \
+static inline xfs_daddr_t
+xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
+{
+ return (XFS_IS_REALTIME_INODE(ip) ? \
(xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \
- XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)))
-#endif
-
-#define XFS_FSB_TO_DB_IO(io,fsb) \
- (((io)->io_flags & XFS_IOCORE_RT) ? \
- XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \
- XFS_FSB_TO_DADDR((io)->io_mount, (fsb)))
+ XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)));
+}
/*
- * Prototypes for functions in xfs_rw.c.
+ * Flags for xfs_free_eofblocks
*/
+#define XFS_FREE_EOF_LOCK (1<<0)
+#define XFS_FREE_EOF_NOLOCK (1<<1)
-int
-xfs_write_clear_setuid(
- struct xfs_inode *ip);
-
-int
-xfs_bwrite(
- struct xfs_mount *mp,
- struct xfs_buf *bp);
-
-int
-xfs_bioerror(
- struct xfs_buf *b);
-int
-xfs_bioerror_relse(
- struct xfs_buf *b);
-
-int
-xfs_read_buf(
- struct xfs_mount *mp,
- xfs_buftarg_t *target,
- xfs_daddr_t blkno,
- int len,
- uint flags,
- struct xfs_buf **bpp);
-
-void
-xfs_ioerror_alert(
- char *func,
- struct xfs_mount *mp,
- xfs_buf_t *bp,
- xfs_daddr_t blkno);
+/*
+ * helper function to extract extent size hint from inode
+ */
+STATIC_INLINE xfs_extlen_t
+xfs_get_extsz_hint(
+ xfs_inode_t *ip)
+{
+ xfs_extlen_t extsz;
+
+ if (unlikely(XFS_IS_REALTIME_INODE(ip))) {
+ extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
+ ? ip->i_d.di_extsize
+ : ip->i_mount->m_sb.sb_rextsize;
+ ASSERT(extsz);
+ } else {
+ extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
+ ? ip->i_d.di_extsize : 0;
+ }
+ return extsz;
+}
+/*
+ * Prototypes for functions in xfs_rw.c.
+ */
+extern int xfs_write_clear_setuid(struct xfs_inode *ip);
+extern int xfs_write_sync_logforce(struct xfs_mount *mp, struct xfs_inode *ip);
+extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp);
+extern int xfs_bioerror(struct xfs_buf *bp);
+extern int xfs_bioerror_relse(struct xfs_buf *bp);
+extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp,
+ xfs_daddr_t blkno, int len, uint flags,
+ struct xfs_buf **bpp);
+extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp,
+ xfs_buf_t *bp, xfs_daddr_t blkno);
/*
* Prototypes for functions in xfs_vnodeops.c.
*/
-
-int
-xfs_rwlock(
- bhv_desc_t *bdp,
- vrwlock_t write_lock);
-
-void
-xfs_rwunlock(
- bhv_desc_t *bdp,
- vrwlock_t write_lock);
-
-int
-xfs_change_file_space(
- bhv_desc_t *bdp,
- int cmd,
- xfs_flock64_t *bf,
- xfs_off_t offset,
- cred_t *credp,
- int flags);
-
-int
-xfs_set_dmattrs(
- bhv_desc_t *bdp,
- u_int evmask,
- u_int16_t state,
- cred_t *credp);
+extern int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip,
+ int flags);
#endif /* __XFS_RW_H__ */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff