Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

[mv-sheeva.git] / fs / xfs / xfs_rw.h

diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h
index ba74000931ec9565d6759b90db3f694f957787a1..fcf28dbded7cdbaed63e1d28542b09d697e6d129 100644 (file)
--- a/fs/xfs/xfs_rw.h
+++ b/fs/xfs/xfs_rw.h
@@ -77,6 +77,28 @@ xfs_fsb_to_db_io(struct xfs_iocore *io, xfs_fsblock_t fsb)
 #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.
  */