fs/ntfs3: Rename variables and add comment

After renaming we don't need to split code in two lines.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/frecord.c

@@ -3265,6 +3265,7 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint)
 			modified = true;
 		}
 
+		/* std attribute is always in primary MFT record. */
 		if (modified)
 			ni->mi.dirty = true;
 

fs/ntfs3/fslog.c

@@ -3048,7 +3048,7 @@ static int do_action(struct ntfs_log *log, struct OPEN_ATTR_ENRTY *oe,
 	struct NEW_ATTRIBUTE_SIZES *new_sz;
 	struct ATTR_FILE_NAME *fname;
 	struct OpenAttr *oa, *oa2;
-	u32 nsize, t32, asize, used, esize, bmp_off, bmp_bits;
+	u32 nsize, t32, asize, used, esize, off, bits;
 	u16 id, id2;
 	u32 record_size = sbi->record_size;
 	u64 t64;
@@ -3635,30 +3635,28 @@ static int do_action(struct ntfs_log *log, struct OPEN_ATTR_ENRTY *oe,
 		break;
 
 	case SetBitsInNonresidentBitMap:
-		bmp_off =
-			le32_to_cpu(((struct BITMAP_RANGE *)data)->bitmap_off);
-		bmp_bits = le32_to_cpu(((struct BITMAP_RANGE *)data)->bits);
+		off = le32_to_cpu(((struct BITMAP_RANGE *)data)->bitmap_off);
+		bits = le32_to_cpu(((struct BITMAP_RANGE *)data)->bits);
 
-		if (cbo + (bmp_off + 7) / 8 > lco ||
-		    cbo + ((bmp_off + bmp_bits + 7) / 8) > lco) {
+		if (cbo + (off + 7) / 8 > lco ||
+		    cbo + ((off + bits + 7) / 8) > lco) {
 			goto dirty_vol;
 		}
 
-		__bitmap_set(Add2Ptr(buffer_le, roff), bmp_off, bmp_bits);
+		__bitmap_set(Add2Ptr(buffer_le, roff), off, bits);
 		a_dirty = true;
 		break;
 
 	case ClearBitsInNonresidentBitMap:
-		bmp_off =
-			le32_to_cpu(((struct BITMAP_RANGE *)data)->bitmap_off);
-		bmp_bits = le32_to_cpu(((struct BITMAP_RANGE *)data)->bits);
+		off = le32_to_cpu(((struct BITMAP_RANGE *)data)->bitmap_off);
+		bits = le32_to_cpu(((struct BITMAP_RANGE *)data)->bits);
 
-		if (cbo + (bmp_off + 7) / 8 > lco ||
-		    cbo + ((bmp_off + bmp_bits + 7) / 8) > lco) {
+		if (cbo + (off + 7) / 8 > lco ||
+		    cbo + ((off + bits + 7) / 8) > lco) {
 			goto dirty_vol;
 		}
 
-		__bitmap_clear(Add2Ptr(buffer_le, roff), bmp_off, bmp_bits);
+		__bitmap_clear(Add2Ptr(buffer_le, roff), off, bits);
 		a_dirty = true;
 		break;