staging: exfat: clean up d_entry rebuilding.

Clean up d_entry rebuilding in exfat_rename_file() and move_file().

-Replace memcpy of d_entry with structure copy.
-Change to use the value already stored in fid.

Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp>
Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Link: https://lore.kernel.org/r/20200302095716.64155-1-Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/exfat/exfat_core.c b/drivers/staging/exfat/exfat_core.c
index ceaea1b..374a4fe 100644 (file)
--- a/drivers/staging/exfat/exfat_core.c
+++ b/drivers/staging/exfat/exfat_core.c
@@ -2285,12 +2285,10 @@ s32 exfat_rename_file(struct inode *inode, struct chain_t *p_dir, s32 oldentry,
                        return -ENOENT;
                }
 
-               memcpy((void *)epnew, (void *)epold, DENTRY_SIZE);
-               if (exfat_get_entry_type(epnew) == TYPE_FILE) {
-                       exfat_set_entry_attr(epnew,
-                                            exfat_get_entry_attr(epnew) |
-                                            ATTR_ARCHIVE);
+               *epnew = *epold;
+               if (fid->type == TYPE_FILE) {
                        fid->attr |= ATTR_ARCHIVE;
+                       exfat_set_entry_attr(epnew, fid->attr);
                }
                exfat_buf_modify(sb, sector_new);
                exfat_buf_unlock(sb, sector_old);
@@ -2306,7 +2304,7 @@ s32 exfat_rename_file(struct inode *inode, struct chain_t *p_dir, s32 oldentry,
                        return -ENOENT;
                }
 
-               memcpy((void *)epnew, (void *)epold, DENTRY_SIZE);
+               *epnew = *epold;
                exfat_buf_modify(sb, sector_new);
                exfat_buf_unlock(sb, sector_old);
 
@@ -2319,11 +2317,9 @@ s32 exfat_rename_file(struct inode *inode, struct chain_t *p_dir, s32 oldentry,
                                       num_old_entries);
                fid->entry = newentry;
        } else {
-               if (exfat_get_entry_type(epold) == TYPE_FILE) {
-                       exfat_set_entry_attr(epold,
-                                            exfat_get_entry_attr(epold) |
-                                            ATTR_ARCHIVE);
+               if (fid->type == TYPE_FILE) {
                        fid->attr |= ATTR_ARCHIVE;
+                       exfat_set_entry_attr(epold, fid->attr);
                }
                exfat_buf_modify(sb, sector_old);
                exfat_buf_unlock(sb, sector_old);
@@ -2387,11 +2383,10 @@ s32 move_file(struct inode *inode, struct chain_t *p_olddir, s32 oldentry,
                return -ENOENT;
        }
 
-       memcpy((void *)epnew, (void *)epmov, DENTRY_SIZE);
-       if (exfat_get_entry_type(epnew) == TYPE_FILE) {
-               exfat_set_entry_attr(epnew, exfat_get_entry_attr(epnew) |
-                                    ATTR_ARCHIVE);
+       *epnew = *epmov;
+       if (fid->type == TYPE_FILE) {
                fid->attr |= ATTR_ARCHIVE;
+               exfat_set_entry_attr(epnew, fid->attr);
        }
        exfat_buf_modify(sb, sector_new);
        exfat_buf_unlock(sb, sector_mov);
@@ -2406,7 +2401,7 @@ s32 move_file(struct inode *inode, struct chain_t *p_olddir, s32 oldentry,
                return -ENOENT;
        }
 
-       memcpy((void *)epnew, (void *)epmov, DENTRY_SIZE);
+       *epnew = *epmov;
        exfat_buf_modify(sb, sector_new);
        exfat_buf_unlock(sb, sector_mov);