[PATCH V2] Make inode64 a remountable option

[PATCH V2] Make inode64 a remountable option

[Carlos Maiolino]

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@redhat.com>
---
 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..d5ef8c7 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.agcount; i++) {
+				struct xfs_perag	*pag;
+
+				pag = xfs_perag_get(mp, index);
+				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

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Re: [PATCH V2] Make inode64 a remountable option

[Carlos Maiolino]

Sorry, added a wrong element in the loop, sending a V3 now.

On Thu, Aug 16, 2012 at 11:18:45PM -0300, Carlos Maiolino wrote:
> 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@redhat.com>
> ---
>  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..d5ef8c7 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.agcount; i++) {
> +				struct xfs_perag	*pag;
> +
> +				pag = xfs_perag_get(mp, index);
> +				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
> 
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs

-- 
--Carlos

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