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vfs: remove dget() from dentry_unhash()

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This serves no useful purpose that I can discern.  All callers (rename,
rmdir) hold their own reference to the dentry.

A quick audit of all file systems showed no relevant checks on the value
of d_count in vfs_rmdir/vfs_rename_dir paths.

Signed-off-by: Sage Weil <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Sage Weil 2011-05-24 13:06:05 -07:00 • committed by Al Viro
commit 64252c75a2
3 changed files with 1 additions and 8 deletions
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3
fs/hpfs/namei.c
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@ -414,7 +414,6 @@ again:
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
dentry_unhash(dentry);
if (!d_unhashed(dentry)) {
dput(dentry);
hpfs_unlock(dir->i_sb);
return -ENOSPC;
}
@ -422,7 +421,6 @@ again:
!S_ISREG(inode->i_mode) ||
get_write_access(inode)) {
d_rehash(dentry);
dput(dentry);
} else {
struct iattr newattrs;
/*printk("HPFS: truncating file before delete.\n");*/
@ -430,7 +428,6 @@ again:
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
err = notify_change(dentry, &newattrs);
put_write_access(inode);
dput(dentry);
if (!err)
goto again;
}