[XFS] Unwrap AIL_LOCK

[safe/jmp/linux-2.6] / fs / xfs / xfs_rw.h

diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h
index 188b296..49875e1 100644 (file)
--- a/fs/xfs/xfs_rw.h
+++ b/fs/xfs/xfs_rw.h
@@ -23,32 +23,6 @@ struct xfs_inode;
 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
@@ -72,6 +46,34 @@ xfs_fsb_to_db_io(struct xfs_iocore *io, xfs_fsblock_t fsb)
 }
 
 /*
+ * Flags for xfs_free_eofblocks
+ */
+#define XFS_FREE_EOF_LOCK      (1<<0)
+#define XFS_FREE_EOF_NOLOCK    (1<<1)
+
+
+/*
+ * 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(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
+               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);
@@ -88,13 +90,7 @@ extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp,
 /*
  * Prototypes for functions in xfs_vnodeops.c.
  */
-extern int xfs_rwlock(bhv_desc_t *bdp, bhv_vrwlock_t write_lock);
-extern void xfs_rwunlock(bhv_desc_t *bdp, bhv_vrwlock_t write_lock);
-extern int xfs_setattr(bhv_desc_t *, bhv_vattr_t *vap, int flags,
-                      cred_t *credp);
-extern int xfs_change_file_space(bhv_desc_t *bdp, int cmd, xfs_flock64_t *bf,
-                                xfs_off_t offset, cred_t *credp, int flags);
-extern 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__ */