Re: [PATCH 3/3] f2fs: enhnace alloc_nid and build_free_nids flows

From: Namjae Jeon
Date: Thu Apr 25 2013 - 21:44:19 EST

2013/4/25, Jaegeuk Kim <>:
> In order to avoid build_free_nid lock contention, let's change the order of
> function calls as follows.
> At first, check whether there is enough free nids.
> - If available, just get a free nid with spin_lock without any overhead.
> - Otherwise, conduct build_free_nids.
> : scan nat pages, journal nat entries, and nat cache entries.
> We should consider carefullly not to serve free nids intermediately made by
> build_free_nids.
> We can get stable free nids only after build_free_nids is done.
> Signed-off-by: Jaegeuk Kim <>
I can't find any issues in this patch.
Reviewed-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>

> ---
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at