xfs: Extend project quotas to support 32bit project ids

This patch adds support for 32bit project quota identifiers.

On disk format is backward compatible with 16bit projid numbers. projid
on disk is now kept in two 16bit values - di_projid_lo (which holds the
same position as old 16bit projid value) and new di_projid_hi (takes
existing padding) and converts from/to 32bit value on the fly.

xfs_admin (for existing fs), mkfs.xfs (for new fs) needs to be used
to enable PROJID32BIT support.

Signed-off-by: Arkadiusz Miśkiewicz <arekm@maven.pl>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index f4195f6b8bc..8e4a63c4151 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -114,7 +114,7 @@ xfs_setattr(
                  */
                 ASSERT(udqp == NULL);
                 ASSERT(gdqp == NULL);
-                code = xfs_qm_vop_dqalloc(ip, uid, gid, ip->i_d.di_projid,
+                code = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
                                          qflags, &udqp, &gdqp);
                 if (code)
                         return code;
@@ -1268,7 +1268,7 @@ xfs_create(
         boolean_t               unlock_dp_on_error = B_FALSE;
         uint                    cancel_flags;
         int                     committed;
-        xfs_prid_t              prid;
+        prid_t                  prid;
         struct xfs_dquot        *udqp = NULL;
         struct xfs_dquot        *gdqp = NULL;
         uint                    resblks;
@@ -1281,9 +1281,9 @@ xfs_create(
                 return XFS_ERROR(EIO);
 
         if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)
-                prid = dp->i_d.di_projid;
+                prid = xfs_get_projid(dp);
         else
-                prid = dfltprid;
+                prid = XFS_PROJID_DEFAULT;
 
         /*
          * Make sure that we have allocated dquot(s) on disk.
@@ -1882,7 +1882,7 @@ xfs_link(
          * the tree quota mechanism could be circumvented.
          */
         if (unlikely((tdp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
-                     (tdp->i_d.di_projid != sip->i_d.di_projid))) {
+                     (xfs_get_projid(tdp) != xfs_get_projid(sip)))) {
                 error = XFS_ERROR(EXDEV);
                 goto error_return;
         }
@@ -1956,7 +1956,7 @@ xfs_symlink(
         int                     byte_cnt;
         int                     n;
         xfs_buf_t               *bp;
-        xfs_prid_t              prid;
+        prid_t                  prid;
         struct xfs_dquot        *udqp, *gdqp;
         uint                    resblks;
 
@@ -1979,9 +1979,9 @@ xfs_symlink(
 
         udqp = gdqp = NULL;
         if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)
-                prid = dp->i_d.di_projid;
+                prid = xfs_get_projid(dp);
         else
-                prid = (xfs_prid_t)dfltprid;
+                prid = XFS_PROJID_DEFAULT;
 
         /*
          * Make sure that we have allocated dquot(s) on disk.