[XFS] Implement the di_extsize allocator hint for non-realtime files as

well.  Also provides a mechanism for inheriting this property from the
parent directory for new files.

SGI-PV: 945264
SGI-Modid: xfs-linux-melb:xfs-kern:24367a

Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index df0d4572d70a..e486c7d244c2 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -809,6 +809,10 @@ _xfs_dic2xflags(
                         flags |= XFS_XFLAG_PROJINHERIT;
                 if (di_flags & XFS_DIFLAG_NOSYMLINKS)
                         flags |= XFS_XFLAG_NOSYMLINKS;
+                if (di_flags & XFS_DIFLAG_EXTSIZE)
+                        flags |= XFS_XFLAG_EXTSIZE;
+                if (di_flags & XFS_DIFLAG_EXTSZINHERIT)
+                        flags |= XFS_XFLAG_EXTSZINHERIT;
         }
 
         return flags;
@@ -1192,11 +1196,19 @@ xfs_ialloc(
                         if ((mode & S_IFMT) == S_IFDIR) {
                                 if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT)
                                         di_flags |= XFS_DIFLAG_RTINHERIT;
-                        } else {
+                                if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) {
+                                        di_flags |= XFS_DIFLAG_EXTSZINHERIT;
+                                        ip->i_d.di_extsize = pip->i_d.di_extsize;
+                                }
+                        } else if ((mode & S_IFMT) == S_IFREG) {
                                 if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) {
                                         di_flags |= XFS_DIFLAG_REALTIME;
                                         ip->i_iocore.io_flags |= XFS_IOCORE_RT;
                                 }
+                                if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) {
+                                        di_flags |= XFS_DIFLAG_EXTSIZE;
+                                        ip->i_d.di_extsize = pip->i_d.di_extsize;
+                                }
                         }
                         if ((pip->i_d.di_flags & XFS_DIFLAG_NOATIME) &&
                             xfs_inherit_noatime)
@@ -1262,7 +1274,7 @@ xfs_isize_check(
         if ((ip->i_d.di_mode & S_IFMT) != S_IFREG)
                 return;
 
-        if ( ip->i_d.di_flags & XFS_DIFLAG_REALTIME )
+        if (ip->i_d.di_flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_EXTSIZE))
                 return;
 
         nimaps = 2;