[XFS] Make growfs work for amounts greater than 2TB

The free block modification code has a 32bit interface, limiting the size
the filesystem can be grown even on 64 bit machines. On 32 bit machines,
there are other 32bit variables in transaction structures and interfaces
that need to be expanded to allow this to work.

SGI-PV: 959978
SGI-Modid: xfs-linux-melb:xfs-kern:27894a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>

5 files changed, 68 insertions, 61 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 024d8452c3d3..fa459a184b8a 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -684,7 +684,7 @@ xfs_bmap_add_extent(
                 ASSERT(nblks <= da_old);
                 if (nblks < da_old)
                         xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS,
-                                (int)(da_old - nblks), rsvd);
+                                (int64_t)(da_old - nblks), rsvd);
         }
         /*
          * Clear out the allocated field, done with it now in any case.
@@ -1209,7 +1209,7 @@ xfs_bmap_add_extent_delay_real(
                 diff = (int)(temp + temp2 - STARTBLOCKVAL(PREV.br_startblock) -
                         (cur ? cur->bc_private.b.allocated : 0));
                 if (diff > 0 &&
-                    xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, -diff, rsvd)) {
+                    xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd)) {
                         /*
                          * Ick gross gag me with a spoon.
                          */
@@ -1220,7 +1220,7 @@ xfs_bmap_add_extent_delay_real(
                                         diff--;
                                         if (!diff ||
                                             !xfs_mod_incore_sb(ip->i_mount,
-                                                    XFS_SBS_FDBLOCKS, -diff, rsvd))
+                                                    XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd))
                                                 break;
                                 }
                                 if (temp2) {
@@ -1228,7 +1228,7 @@ xfs_bmap_add_extent_delay_real(
                                         diff--;
                                         if (!diff ||
                                             !xfs_mod_incore_sb(ip->i_mount,
-                                                    XFS_SBS_FDBLOCKS, -diff, rsvd))
+                                                    XFS_SBS_FDBLOCKS, -((int64_t)diff), rsvd))
                                                 break;
                                 }
                         }
@@ -2015,7 +2015,7 @@ xfs_bmap_add_extent_hole_delay(
         if (oldlen != newlen) {
                 ASSERT(oldlen > newlen);
                 xfs_mod_incore_sb(ip->i_mount, XFS_SBS_FDBLOCKS,
-                        (int)(oldlen - newlen), rsvd);
+                        (int64_t)(oldlen - newlen), rsvd);
                 /*
                  * Nothing to do for disk quota accounting here.
                  */
@@ -3359,7 +3359,7 @@ xfs_bmap_del_extent(
          */
         ASSERT(da_old >= da_new);
         if (da_old > da_new)
-                xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int)(da_old - da_new),
+                xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, (int64_t)(da_old - da_new),
                         rsvd);
         if (delta) {
                 /* DELTA: report the original extent. */
@@ -4930,28 +4930,28 @@ xfs_bmapi(
                                 if (rt) {
                                         error = xfs_mod_incore_sb(mp,
                                                         XFS_SBS_FREXTENTS,
-                                                        -(extsz), (flags &
+                                                        -((int64_t)extsz), (flags &
                                                         XFS_BMAPI_RSVBLOCKS));
                                 } else {
                                         error = xfs_mod_incore_sb(mp,
                                                         XFS_SBS_FDBLOCKS,
-                                                        -(alen), (flags &
+                                                        -((int64_t)alen), (flags &
                                                         XFS_BMAPI_RSVBLOCKS));
                                 }
                                 if (!error) {
                                         error = xfs_mod_incore_sb(mp,
                                                         XFS_SBS_FDBLOCKS,
-                                                        -(indlen), (flags &
+                                                        -((int64_t)indlen), (flags &
                                                         XFS_BMAPI_RSVBLOCKS));
                                         if (error && rt)
                                                 xfs_mod_incore_sb(mp,
                                                         XFS_SBS_FREXTENTS,
-                                                        extsz, (flags &
+                                                        (int64_t)extsz, (flags &
                                                         XFS_BMAPI_RSVBLOCKS));
                                         else if (error)
                                                 xfs_mod_incore_sb(mp,
                                                         XFS_SBS_FDBLOCKS,
-                                                        alen, (flags &
+                                                        (int64_t)alen, (flags &
                                                         XFS_BMAPI_RSVBLOCKS));
                                 }
 
@@ -5617,13 +5617,13 @@ xfs_bunmapi(
                                 rtexts = XFS_FSB_TO_B(mp, del.br_blockcount);
                                 do_div(rtexts, mp->m_sb.sb_rextsize);
                                 xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS,
-                                                (int)rtexts, rsvd);
+                                                (int64_t)rtexts, rsvd);
                                 (void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,
                                         NULL, ip, -((long)del.br_blockcount), 0,
                                         XFS_QMOPT_RES_RTBLKS);
                         } else {
                                 xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS,
-                                                (int)del.br_blockcount, rsvd);
+                                                (int64_t)del.br_blockcount, rsvd);
                                 (void)XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,
                                         NULL, ip, -((long)del.br_blockcount), 0,
                                         XFS_QMOPT_RES_REGBLKS);
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index cbe729310eee..0df07c1df76e 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -52,11 +52,11 @@ STATIC void	xfs_unmountfs_wait(xfs_mount_t *);
 
 #ifdef HAVE_PERCPU_SB
 STATIC void     xfs_icsb_destroy_counters(xfs_mount_t *);
-STATIC void     xfs_icsb_balance_counter(xfs_mount_t *, xfs_sb_field_t, int,
-int);
+STATIC void     xfs_icsb_balance_counter(xfs_mount_t *, xfs_sb_field_t,
+                                                int, int);
 STATIC void     xfs_icsb_sync_counters(xfs_mount_t *);
 STATIC int      xfs_icsb_modify_counters(xfs_mount_t *, xfs_sb_field_t,
-                                                int, int);
+                                                int64_t, int);
 STATIC int      xfs_icsb_disable_counter(xfs_mount_t *, xfs_sb_field_t);
 
 #else
@@ -1254,8 +1254,11 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
  * The SB_LOCK must be held when this routine is called.
  */
 int
-xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
-                        int delta, int rsvd)
+xfs_mod_incore_sb_unlocked(
+        xfs_mount_t     *mp,
+        xfs_sb_field_t  field,
+        int64_t         delta,
+        int             rsvd)
 {
         int             scounter;       /* short counter for 32 bit fields */
         long long       lcounter;       /* long counter for 64 bit fields */
@@ -1287,7 +1290,6 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
                 mp->m_sb.sb_ifree = lcounter;
                 return 0;
         case XFS_SBS_FDBLOCKS:
-
                 lcounter = (long long)
                         mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
                 res_used = (long long)(mp->m_resblks - mp->m_resblks_avail);
@@ -1418,7 +1420,11 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
  * routine to do the work.
  */
 int
-xfs_mod_incore_sb(xfs_mount_t *mp, xfs_sb_field_t field, int delta, int rsvd)
+xfs_mod_incore_sb(
+        xfs_mount_t     *mp,
+        xfs_sb_field_t  field,
+        int64_t         delta,
+        int             rsvd)
 {
         unsigned long   s;
         int     status;
@@ -2092,7 +2098,7 @@ int
 xfs_icsb_modify_counters(
         xfs_mount_t     *mp,
         xfs_sb_field_t  field,
-        int             delta,
+        int64_t         delta,
         int             rsvd)
 {
         xfs_icsb_cnts_t *icsbp;
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 9c33af88514e..9a8e7151b65c 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -586,10 +586,11 @@ xfs_icsb_unlock(xfs_mount_t *mp)
 
 /*
  * This structure is for use by the xfs_mod_incore_sb_batch() routine.
+ * xfs_growfs can specify a few fields which are more than int limit
  */
 typedef struct xfs_mod_sb {
         xfs_sb_field_t  msb_field;      /* Field to modify, see below */
-        int             msb_delta;      /* Change to make to specified field */
+        int64_t         msb_delta;      /* Change to make to specified field */
 } xfs_mod_sb_t;
 
 #define XFS_MOUNT_ILOCK(mp)     mutex_lock(&((mp)->m_ilock))
@@ -607,9 +608,9 @@ extern int	xfs_unmountfs(xfs_mount_t *, struct cred *);
 extern void     xfs_unmountfs_close(xfs_mount_t *, struct cred *);
 extern int      xfs_unmountfs_writesb(xfs_mount_t *);
 extern int      xfs_unmount_flush(xfs_mount_t *, int);
-extern int      xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
+extern int      xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
 extern int      xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
-                        int, int);
+                        int64_t, int);
 extern int      xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
                         uint, int);
 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index ee2721e0de4d..301ff9445b6f 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -339,7 +339,7 @@ xfs_trans_reserve(
          */
         if (blocks > 0) {
                 error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FDBLOCKS,
-                                          -blocks, rsvd);
+                                          -((int64_t)blocks), rsvd);
                 if (error != 0) {
                         current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
                         return (XFS_ERROR(ENOSPC));
@@ -380,7 +380,7 @@ xfs_trans_reserve(
          */
         if (rtextents > 0) {
                 error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FREXTENTS,
-                                          -rtextents, rsvd);
+                                          -((int64_t)rtextents), rsvd);
                 if (error) {
                         error = XFS_ERROR(ENOSPC);
                         goto undo_log;
@@ -410,7 +410,7 @@ undo_log:
 undo_blocks:
         if (blocks > 0) {
                 (void) xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FDBLOCKS,
-                                         blocks, rsvd);
+                                         (int64_t)blocks, rsvd);
                 tp->t_blk_res = 0;
         }
 
@@ -432,7 +432,7 @@ void
 xfs_trans_mod_sb(
         xfs_trans_t     *tp,
         uint            field,
-        long            delta)
+        int64_t         delta)
 {
 
         switch (field) {
@@ -663,62 +663,62 @@ xfs_trans_unreserve_and_mod_sb(
         if (tp->t_flags & XFS_TRANS_SB_DIRTY) {
                 if (tp->t_icount_delta != 0) {
                         msbp->msb_field = XFS_SBS_ICOUNT;
-                        msbp->msb_delta = (int)tp->t_icount_delta;
+                        msbp->msb_delta = tp->t_icount_delta;
                         msbp++;
                 }
                 if (tp->t_ifree_delta != 0) {
                         msbp->msb_field = XFS_SBS_IFREE;
-                        msbp->msb_delta = (int)tp->t_ifree_delta;
+                        msbp->msb_delta = tp->t_ifree_delta;
                         msbp++;
                 }
                 if (tp->t_fdblocks_delta != 0) {
                         msbp->msb_field = XFS_SBS_FDBLOCKS;
-                        msbp->msb_delta = (int)tp->t_fdblocks_delta;
+                        msbp->msb_delta = tp->t_fdblocks_delta;
                         msbp++;
                 }
                 if (tp->t_frextents_delta != 0) {
                         msbp->msb_field = XFS_SBS_FREXTENTS;
-                        msbp->msb_delta = (int)tp->t_frextents_delta;
+                        msbp->msb_delta = tp->t_frextents_delta;
                         msbp++;
                 }
                 if (tp->t_dblocks_delta != 0) {
                         msbp->msb_field = XFS_SBS_DBLOCKS;
-                        msbp->msb_delta = (int)tp->t_dblocks_delta;
+                        msbp->msb_delta = tp->t_dblocks_delta;
                         msbp++;
                 }
                 if (tp->t_agcount_delta != 0) {
                         msbp->msb_field = XFS_SBS_AGCOUNT;
-                        msbp->msb_delta = (int)tp->t_agcount_delta;
+                        msbp->msb_delta = tp->t_agcount_delta;
                         msbp++;
                 }
                 if (tp->t_imaxpct_delta != 0) {
                         msbp->msb_field = XFS_SBS_IMAX_PCT;
-                        msbp->msb_delta = (int)tp->t_imaxpct_delta;
+                        msbp->msb_delta = tp->t_imaxpct_delta;
                         msbp++;
                 }
                 if (tp->t_rextsize_delta != 0) {
                         msbp->msb_field = XFS_SBS_REXTSIZE;
-                        msbp->msb_delta = (int)tp->t_rextsize_delta;
+                        msbp->msb_delta = tp->t_rextsize_delta;
                         msbp++;
                 }
                 if (tp->t_rbmblocks_delta != 0) {
                         msbp->msb_field = XFS_SBS_RBMBLOCKS;
-                        msbp->msb_delta = (int)tp->t_rbmblocks_delta;
+                        msbp->msb_delta = tp->t_rbmblocks_delta;
                         msbp++;
                 }
                 if (tp->t_rblocks_delta != 0) {
                         msbp->msb_field = XFS_SBS_RBLOCKS;
-                        msbp->msb_delta = (int)tp->t_rblocks_delta;
+                        msbp->msb_delta = tp->t_rblocks_delta;
                         msbp++;
                 }
                 if (tp->t_rextents_delta != 0) {
                         msbp->msb_field = XFS_SBS_REXTENTS;
-                        msbp->msb_delta = (int)tp->t_rextents_delta;
+                        msbp->msb_delta = tp->t_rextents_delta;
                         msbp++;
                 }
                 if (tp->t_rextslog_delta != 0) {
                         msbp->msb_field = XFS_SBS_REXTSLOG;
-                        msbp->msb_delta = (int)tp->t_rextslog_delta;
+                        msbp->msb_delta = tp->t_rextslog_delta;
                         msbp++;
                 }
         }
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 9c975c6e6a4f..f1d7ab236726 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -350,25 +350,25 @@ typedef struct xfs_trans {
         xfs_trans_callback_t    t_callback;     /* transaction callback */
         void                    *t_callarg;     /* callback arg */
         unsigned int            t_flags;        /* misc flags */
-        long                    t_icount_delta; /* superblock icount change */
-        long                    t_ifree_delta;  /* superblock ifree change */
-        long                    t_fdblocks_delta; /* superblock fdblocks chg */
-        long                    t_res_fdblocks_delta; /* on-disk only chg */
-        long                    t_frextents_delta;/* superblock freextents chg*/
-        long                    t_res_frextents_delta; /* on-disk only chg */
+        int64_t                 t_icount_delta; /* superblock icount change */
+        int64_t                 t_ifree_delta;  /* superblock ifree change */
+        int64_t                 t_fdblocks_delta; /* superblock fdblocks chg */
+        int64_t                 t_res_fdblocks_delta; /* on-disk only chg */
+        int64_t                 t_frextents_delta;/* superblock freextents chg*/
+        int64_t                 t_res_frextents_delta; /* on-disk only chg */
 #ifdef DEBUG
-        long                    t_ag_freeblks_delta; /* debugging counter */
-        long                    t_ag_flist_delta; /* debugging counter */
-        long                    t_ag_btree_delta; /* debugging counter */
+        int64_t                 t_ag_freeblks_delta; /* debugging counter */
+        int64_t                 t_ag_flist_delta; /* debugging counter */
+        int64_t                 t_ag_btree_delta; /* debugging counter */
 #endif
-        long                    t_dblocks_delta;/* superblock dblocks change */
-        long                    t_agcount_delta;/* superblock agcount change */
-        long                    t_imaxpct_delta;/* superblock imaxpct change */
-        long                    t_rextsize_delta;/* superblock rextsize chg */
-        long                    t_rbmblocks_delta;/* superblock rbmblocks chg */
-        long                    t_rblocks_delta;/* superblock rblocks change */
-        long                    t_rextents_delta;/* superblocks rextents chg */
-        long                    t_rextslog_delta;/* superblocks rextslog chg */
+        int64_t                 t_dblocks_delta;/* superblock dblocks change */
+        int64_t                 t_agcount_delta;/* superblock agcount change */
+        int64_t                 t_imaxpct_delta;/* superblock imaxpct change */
+        int64_t                 t_rextsize_delta;/* superblock rextsize chg */
+        int64_t                 t_rbmblocks_delta;/* superblock rbmblocks chg */
+        int64_t                 t_rblocks_delta;/* superblock rblocks change */
+        int64_t                 t_rextents_delta;/* superblocks rextents chg */
+        int64_t                 t_rextslog_delta;/* superblocks rextslog chg */
         unsigned int            t_items_free;   /* log item descs free */
         xfs_log_item_chunk_t    t_items;        /* first log item desc chunk */
         xfs_trans_header_t      t_header;       /* header for in-log trans */
@@ -932,9 +932,9 @@ typedef struct xfs_trans {
 #define xfs_trans_set_sync(tp)          ((tp)->t_flags |= XFS_TRANS_SYNC)
 
 #ifdef DEBUG
-#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (long)d)
-#define xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (long)d)
-#define xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (long)d)
+#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
+#define xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (int64_t)d)
+#define xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (int64_t)d)
 #else
 #define xfs_trans_agblocks_delta(tp, d)
 #define xfs_trans_agflist_delta(tp, d)
@@ -950,7 +950,7 @@ xfs_trans_t	*_xfs_trans_alloc(struct xfs_mount *, uint);
 xfs_trans_t     *xfs_trans_dup(xfs_trans_t *);
 int             xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
                                   uint, uint);
-void            xfs_trans_mod_sb(xfs_trans_t *, uint, long);
+void            xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
 struct xfs_buf  *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
                                    int, uint);
 int             xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,