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, 12 insertions, 12 deletions

diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index 33bf55d7403a..96c898e7ac9a 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -266,7 +266,7 @@ xfs_trans_read_buf_map(
                 bp = xfs_buf_read_map(target, map, nmaps, flags, ops);
                 if (!bp)
                         return (flags & XBF_TRYLOCK) ?
-                                        EAGAIN : ENOMEM;
+                                        -EAGAIN : -ENOMEM;
 
                 if (bp->b_error) {
                         error = bp->b_error;
@@ -276,8 +276,8 @@ xfs_trans_read_buf_map(
                         xfs_buf_relse(bp);
 
                         /* bad CRC means corrupted metadata */
-                        if (error == EFSBADCRC)
-                                error = EFSCORRUPTED;
+                        if (error == -EFSBADCRC)
+                                error = -EFSCORRUPTED;
                         return error;
                 }
 #ifdef DEBUG
@@ -286,7 +286,7 @@ xfs_trans_read_buf_map(
                                 if (((xfs_req_num++) % xfs_error_mod) == 0) {
                                         xfs_buf_relse(bp);
                                         xfs_debug(mp, "Returning error!");
-                                        return EIO;
+                                        return -EIO;
                                 }
                         }
                 }
@@ -342,8 +342,8 @@ xfs_trans_read_buf_map(
                                         xfs_force_shutdown(tp->t_mountp,
                                                         SHUTDOWN_META_IO_ERROR);
                                 /* bad CRC means corrupted metadata */
-                                if (error == EFSBADCRC)
-                                        error = EFSCORRUPTED;
+                                if (error == -EFSBADCRC)
+                                        error = -EFSCORRUPTED;
                                 return error;
                         }
                 }
@@ -354,7 +354,7 @@ xfs_trans_read_buf_map(
                 if (XFS_FORCED_SHUTDOWN(mp)) {
                         trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
                         *bpp = NULL;
-                        return EIO;
+                        return -EIO;
                 }
 
 
@@ -371,7 +371,7 @@ xfs_trans_read_buf_map(
         if (bp == NULL) {
                 *bpp = NULL;
                 return (flags & XBF_TRYLOCK) ?
-                                        0 : ENOMEM;
+                                        0 : -ENOMEM;
         }
         if (bp->b_error) {
                 error = bp->b_error;
@@ -383,8 +383,8 @@ xfs_trans_read_buf_map(
                 xfs_buf_relse(bp);
 
                 /* bad CRC means corrupted metadata */
-                if (error == EFSBADCRC)
-                        error = EFSCORRUPTED;
+                if (error == -EFSBADCRC)
+                        error = -EFSCORRUPTED;
                 return error;
         }
 #ifdef DEBUG
@@ -395,7 +395,7 @@ xfs_trans_read_buf_map(
                                                    SHUTDOWN_META_IO_ERROR);
                                 xfs_buf_relse(bp);
                                 xfs_debug(mp, "Returning trans error!");
-                                return EIO;
+                                return -EIO;
                         }
                 }
         }
@@ -413,7 +413,7 @@ shutdown_abort:
         trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
         xfs_buf_relse(bp);
         *bpp = NULL;
-        return EIO;
+        return -EIO;
 }
 
 /*