[XFS] wire up ->open for directories

Currently there's no ->open method set for directories on XFS.  That
means we don't perform any check for opening too large directories
without O_LARGEFILE, we don't check for shut down filesystems, and we
don't actually do the readahead for the first block in the directory.

Instead of just setting the directories open routine to xfs_file_open
we merge the shutdown check directly into xfs_file_open and create
a new xfs_dir_open that first calls xfs_file_open and then performs
the readahead for block 0.

(First sent on September 29th)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>

1 files changed, 0 insertions, 22 deletions

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 0574aadc4d3c..c055bdb11cb7 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -54,28 +54,6 @@
 #include "xfs_vnodeops.h"
 
 int
-xfs_open(
-        xfs_inode_t     *ip)
-{
-        int             mode;
-
-        if (XFS_FORCED_SHUTDOWN(ip->i_mount))
-                return XFS_ERROR(EIO);
-
-        /*
-         * If it's a directory with any blocks, read-ahead block 0
-         * as we're almost certain to have the next operation be a read there.
-         */
-        if (S_ISDIR(ip->i_d.di_mode) && ip->i_d.di_nextents > 0) {
-                mode = xfs_ilock_map_shared(ip);
-                if (ip->i_d.di_nextents > 0)
-                        (void)xfs_da_reada_buf(NULL, ip, 0, XFS_DATA_FORK);
-                xfs_iunlock(ip, mode);
-        }
-        return 0;
-}
-
-int
 xfs_setattr(
         struct xfs_inode        *ip,
         struct iattr            *iattr,