xfs: global error sign conversion

Convert all the errors the core XFs code to negative error signs
like the rest of the kernel and remove all the sign conversion we
do in the interface layers.

Errors for conversion (and comparison) found via searches like:

$ git grep " E" fs/xfs
$ git grep "return E" fs/xfs
$ git grep " E[A-Z].*;$" fs/xfs

Negation points found via searches like:

$ git grep "= -[a-z,A-Z]" fs/xfs
$ git grep "return -[a-z,A-D,F-Z]" fs/xfs
$ git grep " -[a-z].*;" fs/xfs

[ with some bits I missed from Brian Foster ]

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 14 insertions, 14 deletions

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 3ee242686181..8a44a79f49af 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -327,7 +327,7 @@ xfs_qm_dqalloc(
          */
         if (!xfs_this_quota_on(dqp->q_mount, dqp->dq_flags)) {
                 xfs_iunlock(quotip, XFS_ILOCK_EXCL);
-                return ESRCH;
+                return -ESRCH;
         }
 
         xfs_trans_ijoin(tp, quotip, XFS_ILOCK_EXCL);
@@ -354,7 +354,7 @@ xfs_qm_dqalloc(
                                mp->m_quotainfo->qi_dqchunklen,
                                0);
         if (!bp) {
-                error = ENOMEM;
+                error = -ENOMEM;
                 goto error1;
         }
         bp->b_ops = &xfs_dquot_buf_ops;
@@ -442,7 +442,7 @@ xfs_qm_dqrepair(
                 if (error) {
                         /* repair failed, we're screwed */
                         xfs_trans_brelse(tp, *bpp);
-                        return EIO;
+                        return -EIO;
                 }
         }
 
@@ -480,7 +480,7 @@ xfs_qm_dqtobp(
                  * didn't have the quota inode lock.
                  */
                 xfs_iunlock(quotip, lock_mode);
-                return ESRCH;
+                return -ESRCH;
         }
 
         /*
@@ -508,7 +508,7 @@ xfs_qm_dqtobp(
                  * We don't allocate unless we're asked to
                  */
                 if (!(flags & XFS_QMOPT_DQALLOC))
-                        return ENOENT;
+                        return -ENOENT;
 
                 ASSERT(tp);
                 error = xfs_qm_dqalloc(tpp, mp, dqp, quotip,
@@ -530,7 +530,7 @@ xfs_qm_dqtobp(
                                            mp->m_quotainfo->qi_dqchunklen,
                                            0, &bp, &xfs_dquot_buf_ops);
 
-                if (error == EFSCORRUPTED && (flags & XFS_QMOPT_DQREPAIR)) {
+                if (error == -EFSCORRUPTED && (flags & XFS_QMOPT_DQREPAIR)) {
                         xfs_dqid_t firstid = (xfs_dqid_t)map.br_startoff *
                                                 mp->m_quotainfo->qi_dqperchunk;
                         ASSERT(bp == NULL);
@@ -715,7 +715,7 @@ xfs_qm_dqget(
         if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) ||
             (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) ||
             (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) {
-                return ESRCH;
+                return -ESRCH;
         }
 
 #ifdef DEBUG
@@ -723,7 +723,7 @@ xfs_qm_dqget(
                 if ((xfs_dqerror_target == mp->m_ddev_targp) &&
                     (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) {
                         xfs_debug(mp, "Returning error in dqget");
-                        return EIO;
+                        return -EIO;
                 }
         }
 
@@ -796,14 +796,14 @@ restart:
                 } else {
                         /* inode stays locked on return */
                         xfs_qm_dqdestroy(dqp);
-                        return ESRCH;
+                        return -ESRCH;
                 }
         }
 
         mutex_lock(&qi->qi_tree_lock);
-        error = -radix_tree_insert(tree, id, dqp);
+        error = radix_tree_insert(tree, id, dqp);
         if (unlikely(error)) {
-                WARN_ON(error != EEXIST);
+                WARN_ON(error != -EEXIST);
 
                 /*
                  * Duplicate found. Just throw away the new dquot and start
@@ -966,7 +966,7 @@ xfs_qm_dqflush(
                                              SHUTDOWN_CORRUPT_INCORE);
                 else
                         spin_unlock(&mp->m_ail->xa_lock);
-                error = EIO;
+                error = -EIO;
                 goto out_unlock;
         }
 
@@ -992,7 +992,7 @@ xfs_qm_dqflush(
                 xfs_buf_relse(bp);
                 xfs_dqfunlock(dqp);
                 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
-                return EIO;
+                return -EIO;
         }
 
         /* This is the only portion of data that needs to persist */
@@ -1045,7 +1045,7 @@ xfs_qm_dqflush(
 
 out_unlock:
         xfs_dqfunlock(dqp);
-        return EIO;
+        return -EIO;
 }
 
 /*