[XFS] Minor code rearranging and cleanup to prevent some coverity false

positives.

SGI-PV: 955502
SGI-Modid: xfs-linux-melb:xfs-kern:26805a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 15 insertions, 21 deletions

diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 5a0b678956e0..e050987afe18 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -1976,7 +1976,10 @@ xfs_growfs_rt(
         if ((error = xfs_growfs_rt_alloc(mp, rsumblocks, nrsumblocks,
                         mp->m_sb.sb_rsumino)))
                 return error;
-        nmp = NULL;
+        /*
+         * Allocate a new (fake) mount/sb.
+         */
+        nmp = kmem_alloc(sizeof(*nmp), KM_SLEEP);
         /*
          * Loop over the bitmap blocks.
          * We will do everything one bitmap block at a time.
@@ -1987,10 +1990,6 @@ xfs_growfs_rt(
                      ((sbp->sb_rextents & ((1 << mp->m_blkbit_log) - 1)) != 0);
              bmbno < nrbmblocks;
              bmbno++) {
-                /*
-                 * Allocate a new (fake) mount/sb.
-                 */
-                nmp = kmem_alloc(sizeof(*nmp), KM_SLEEP);
                 *nmp = *mp;
                 nsbp = &nmp->m_sb;
                 /*
@@ -2018,13 +2017,13 @@ xfs_growfs_rt(
                 cancelflags = 0;
                 if ((error = xfs_trans_reserve(tp, 0,
                                 XFS_GROWRTFREE_LOG_RES(nmp), 0, 0, 0)))
-                        goto error_exit;
+                        break;
                 /*
                  * Lock out other callers by grabbing the bitmap inode lock.
                  */
                 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
                                                 XFS_ILOCK_EXCL, &ip)))
-                        goto error_exit;
+                        break;
                 ASSERT(ip == mp->m_rbmip);
                 /*
                  * Update the bitmap inode's size.
@@ -2038,7 +2037,7 @@ xfs_growfs_rt(
                  */
                 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rsumino, 0,
                                                 XFS_ILOCK_EXCL, &ip)))
-                        goto error_exit;
+                        break;
                 ASSERT(ip == mp->m_rsumip);
                 /*
                  * Update the summary inode's size.
@@ -2053,7 +2052,7 @@ xfs_growfs_rt(
                     mp->m_rsumlevels != nmp->m_rsumlevels) {
                         error = xfs_rtcopy_summary(mp, nmp, tp);
                         if (error)
-                                goto error_exit;
+                                break;
                 }
                 /*
                  * Update superblock fields.
@@ -2080,18 +2079,13 @@ xfs_growfs_rt(
                 error = xfs_rtfree_range(nmp, tp, sbp->sb_rextents,
                         nsbp->sb_rextents - sbp->sb_rextents, &bp, &sumbno);
                 if (error)
-                        goto error_exit;
+                        break;
                 /*
                  * Mark more blocks free in the superblock.
                  */
                 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FREXTENTS,
                         nsbp->sb_rextents - sbp->sb_rextents);
                 /*
-                 * Free the fake mp structure.
-                 */
-                kmem_free(nmp, sizeof(*nmp));
-                nmp = NULL;
-                /*
                  * Update mp values into the real mp structure.
                  */
                 mp->m_rsumlevels = nrsumlevels;
@@ -2101,15 +2095,15 @@ xfs_growfs_rt(
                  */
                 xfs_trans_commit(tp, 0, NULL);
         }
-        return 0;
+
+        if (error)
+                xfs_trans_cancel(tp, cancelflags);
 
         /*
-         * Error paths come here.
+         * Free the fake mp structure.
          */
-error_exit:
-        if (nmp)
-                kmem_free(nmp, sizeof(*nmp));
-        xfs_trans_cancel(tp, cancelflags);
+        kmem_free(nmp, sizeof(*nmp));
+
         return error;
 }