Messages in this thread | | | Date | 5 Sep 2013 00:30:33 -0400 | From | "George Spelvin" <> | Subject | Re: [PATCH] dcache: Translating dentry into pathname without taking rename_lock |
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As long as you're removing locks from prepend_name and complicating its innards, I notice that each and every call site follows it by prepending "/". How about moving that into prepend_name as well?
Also, if you happen to feel like it, you can delete the slash flag and replace it with "bptr != *buffer".
Another small tweak would be to the global_root part of the code. You could move the is_mounted(vfsmnt) test up, and combine the tail of that code path with the regular exit. All you have to do is change the !slash test to:
if (error >= 0 && bptr == *buffer) { /* Root directory */ if (--blen < 0) error = -ENAMETOOLONG; else *--bptr = '/'; }
This modified form is no more code than an inlined copy of prepend(), so we haven't actually slowed the fast path, but it avoids corrupting the return value of 0/1/2 if possible.
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