[PATCH] fat: remove the unneeded vfat_find() in vfat_rename()
OGAWA Hirofumi [Sun, 30 Oct 2005 23:03:50 +0000 (15:03 -0800)]
Now, vfat_rename() is using vfat_find() for sanity check.  This removes that
sanity check, the cost of sanity check is too high.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/msdos/namei.c
fs/vfat/namei.c

index 154f511..626a367 100644 (file)
@@ -454,10 +454,10 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
 {
        struct buffer_head *dotdot_bh;
        struct msdos_dir_entry *dotdot_de;
-       loff_t dotdot_i_pos;
        struct inode *old_inode, *new_inode;
        struct fat_slot_info old_sinfo, sinfo;
        struct timespec ts;
+       loff_t dotdot_i_pos, new_i_pos;
        int err, old_attrs, is_dir, update_dotdot, corrupt = 0;
 
        old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
@@ -516,28 +516,24 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
        if (new_inode) {
                if (err)
                        goto out;
-               if (MSDOS_I(new_inode)->i_pos != sinfo.i_pos) {
-                       /* WTF??? Cry and fail. */
-                       printk(KERN_WARNING "msdos_rename: fs corrupted\n");
-                       goto out;
-               }
-
                if (is_dir) {
                        err = fat_dir_empty(new_inode);
                        if (err)
                                goto out;
                }
+               new_i_pos = MSDOS_I(new_inode)->i_pos;
                fat_detach(new_inode);
        } else {
                err = msdos_add_entry(new_dir, new_name, is_dir, is_hid, 0,
                                      &ts, &sinfo);
                if (err)
                        goto out;
+               new_i_pos = sinfo.i_pos;
        }
        new_dir->i_version++;
 
        fat_detach(old_inode);
-       fat_attach(old_inode, sinfo.i_pos);
+       fat_attach(old_inode, new_i_pos);
        if (is_hid)
                MSDOS_I(old_inode)->i_attrs |= ATTR_HIDDEN;
        else
@@ -604,7 +600,7 @@ error_inode:
        fat_attach(old_inode, old_sinfo.i_pos);
        MSDOS_I(old_inode)->i_attrs = old_attrs;
        if (new_inode) {
-               fat_attach(new_inode, sinfo.i_pos);
+               fat_attach(new_inode, new_i_pos);
                if (corrupt)
                        corrupt |= fat_sync_inode(new_inode);
        } else {
index 467346b..ef46939 100644 (file)
@@ -887,10 +887,10 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
 {
        struct buffer_head *dotdot_bh;
        struct msdos_dir_entry *dotdot_de;
-       loff_t dotdot_i_pos;
        struct inode *old_inode, *new_inode;
        struct fat_slot_info old_sinfo, sinfo;
        struct timespec ts;
+       loff_t dotdot_i_pos, new_i_pos;
        int err, is_dir, update_dotdot, corrupt = 0;
 
        old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
@@ -913,31 +913,24 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
 
        ts = CURRENT_TIME_SEC;
        if (new_inode) {
-               err = vfat_find(new_dir, &new_dentry->d_name, &sinfo);
-               if (err)
-                       goto out;
-               if (MSDOS_I(new_inode)->i_pos != sinfo.i_pos) {
-                       /* WTF??? Cry and fail. */
-                       printk(KERN_WARNING "vfat_rename: fs corrupted\n");
-                       goto out;
-               }
-
                if (is_dir) {
                        err = fat_dir_empty(new_inode);
                        if (err)
                                goto out;
                }
+               new_i_pos = MSDOS_I(new_inode)->i_pos;
                fat_detach(new_inode);
        } else {
                err = vfat_add_entry(new_dir, &new_dentry->d_name, is_dir, 0,
                                     &ts, &sinfo);
                if (err)
                        goto out;
+               new_i_pos = sinfo.i_pos;
        }
        new_dir->i_version++;
 
        fat_detach(old_inode);
-       fat_attach(old_inode, sinfo.i_pos);
+       fat_attach(old_inode, new_i_pos);
        if (IS_DIRSYNC(new_dir)) {
                err = fat_sync_inode(old_inode);
                if (err)
@@ -1001,7 +994,7 @@ error_inode:
        fat_detach(old_inode);
        fat_attach(old_inode, old_sinfo.i_pos);
        if (new_inode) {
-               fat_attach(new_inode, sinfo.i_pos);
+               fat_attach(new_inode, new_i_pos);
                if (corrupt)
                        corrupt |= fat_sync_inode(new_inode);
        } else {