xfs
[Top] [All Lists]

[PATCH V3] Make inode64 a remountable option

To: xfs@xxxxxxxxxxx
Subject: [PATCH V3] Make inode64 a remountable option
From: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
Date: Thu, 16 Aug 2012 23:39:38 -0300
Cc: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
Actually, there is no reason about why a user must umount and mount a XFS
filesystem to enable 'inode64' option. So, this patch makes this a remountable
option.

Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
 fs/xfs/xfs_super.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index bdaf4cb..98acd26 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -120,12 +120,13 @@ mempool_t *xfs_ioend_pool;
  * in the future, too.
  */
 enum {
-       Opt_barrier, Opt_nobarrier, Opt_err
+       Opt_barrier, Opt_nobarrier, Opt_inode64, Opt_err
 };
 
 static const match_table_t tokens = {
        {Opt_barrier, "barrier"},
        {Opt_nobarrier, "nobarrier"},
+       {Opt_inode64, "inode64"},
        {Opt_err, NULL}
 };
 
@@ -1043,6 +1044,7 @@ xfs_fs_remount(
 
        while ((p = strsep(&options, ",")) != NULL) {
                int token;
+               int i = 0;
 
                if (!*p)
                        continue;
@@ -1055,6 +1057,20 @@ xfs_fs_remount(
                case Opt_nobarrier:
                        mp->m_flags &= ~XFS_MOUNT_BARRIER;
                        break;
+               case Opt_inode64:
+
+                       for (i = 0; i < mp->m_sb.sb_agcount; i++) {
+                               struct xfs_perag        *pag;
+
+                               pag = xfs_perag_get(mp, i);
+                               pag->pagi_inodeok = 1;
+                               pag->pagf_metadata = 0;
+                               xfs_perag_put(pag);
+                       }
+                       mp->m_flags &= ~(XFS_MOUNT_32BITINODES |
+                                        XFS_MOUNT_SMALL_INUMS);
+                       mp->m_maxagi = i;
+                       break;
                default:
                        /*
                         * Logically we would return an error here to prevent
-- 
1.7.11.2

<Prev in Thread] Current Thread [Next in Thread>