luck/tmp_suning_uos_patched
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[PATCH] namei fixes (8/19)

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In open_namei() we never use path.mnt or path.dentry after exit: or ok:.
Assignment of path.dentry in case of LAST_BIND is dead code and only
obfuscates already convoluted function; assignment of path.mnt after
__do_follow_link() can be moved down to the place where we set path.dentry.

Obviously equivalent transformations, just to clean the air a bit in that
region.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro 2005-06-06 13:36:04 -07:00 committed by Linus Torvalds
parent cd4e91d3bc
commit d671d5e514
1 changed files with 2 additions and 4 deletions
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6
fs/namei.c
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@ -1526,14 +1526,11 @@ int open_namei(const char * pathname, int flag, int mode, struct nameidata *nd)
if (error)
goto exit_dput;
error = __do_follow_link(&path, nd);
path.mnt = nd->mnt;
if (error)
return error;
nd->flags &= ~LOOKUP_PARENT;
if (nd->last_type == LAST_BIND) {
path.dentry = nd->dentry;
if (nd->last_type == LAST_BIND)
goto ok;
}
error = -EISDIR;
if (nd->last_type != LAST_NORM)
goto exit;
@ -1549,6 +1546,7 @@ int open_namei(const char * pathname, int flag, int mode, struct nameidata *nd)
dir = nd->dentry;
down(&dir->d_inode->i_sem);
path.dentry = __lookup_hash(&nd->last, nd->dentry, nd);
path.mnt = nd->mnt;
putname(nd->last.name);
goto do_last;
}