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[PATCH 2/6] xfs: make inode64 as the default allocation mode

To: xfs@xxxxxxxxxxx
Subject: [PATCH 2/6] xfs: make inode64 as the default allocation mode
From: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
Date: Thu, 20 Sep 2012 10:32:37 -0300
In-reply-to: <1348147961-7520-1-git-send-email-cmaiolino@xxxxxxxxxx>
References: <1348147961-7520-1-git-send-email-cmaiolino@xxxxxxxxxx>
since 64-bit inodes can be accessed while using inode32, and these can also be
used on 32-bit kernels, there is no reason to still keep inode32 as the default
mount option.
If the filesystem cannot handle 64bit inode numbers (i.e CONFIG_LBDAF is not
enabled and BITS_PER_LONG == 32), XFS_MOUNT_SMALL_INUMS will still be set by
default, so inode64 is not an unconditional default value.

Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
 fs/xfs/xfs_super.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index f1f2968..7686eee 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -88,6 +88,8 @@ mempool_t *xfs_ioend_pool;
                                         * unwritten extent conversion */
 #define MNTOPT_NOBARRIER "nobarrier"   /* .. disable */
 #define MNTOPT_64BITINODE   "inode64"  /* inodes can be allocated anywhere */
+#define MNTOPT_32BITINODE   "inode32"  /* inode allocation limited to
+                                        * XFS_MAXINUMBER_32 */
 #define MNTOPT_IKEEP   "ikeep"         /* do not free empty inode clusters */
 #define MNTOPT_NOIKEEP "noikeep"       /* free empty inode clusters */
 #define MNTOPT_LARGEIO    "largeio"    /* report large I/O sizes in stat() */
@@ -198,7 +200,9 @@ xfs_parseargs(
         */
        mp->m_flags |= XFS_MOUNT_BARRIER;
        mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
+#if !XFS_BIG_INUMS
        mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
+#endif
 
        /*
         * These can be overridden by the mount option parsing.
@@ -295,6 +299,8 @@ xfs_parseargs(
                                return EINVAL;
                        }
                        dswidth = simple_strtoul(value, &eov, 10);
+               } else if (!strcmp(this_char, MNTOPT_32BITINODE)) {
+                       mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
                } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
                        mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
 #if !XFS_BIG_INUMS
@@ -493,6 +499,7 @@ xfs_showargs(
                { XFS_MOUNT_FILESTREAMS,        "," MNTOPT_FILESTREAM },
                { XFS_MOUNT_GRPID,              "," MNTOPT_GRPID },
                { XFS_MOUNT_DISCARD,            "," MNTOPT_DISCARD },
+               { XFS_MOUNT_SMALL_INUMS,        "," MNTOPT_32BITINODE },
                { 0, NULL }
        };
        static struct proc_xfs_info xfs_info_unset[] = {
-- 
1.7.11.4

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