Re: [PATCH 05/45] FS-Cache: Release page->private after failed readahead [ver #41]

[David Howells]

Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> > +		if (TestSetPageLocked(page))
> 
> This got obsoleted by trylock_page().
> 
> I don't remember why, actually.

trylock_page() throws memory barriers in there on, say, PowerPC.  That's
probably necessary.

David
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