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SubjectRe: posix_fallocate question again
Jamie Lokier writes:
> Nikita Danilov wrote:
> > fallocate() will be useful when writing into file through
> > mmap(). Currently kernel can just drop dirtied page at any moment (if
> > ->writepage() fails with -ENOSPC), so the only safe way to modify file
> > through mmap() is by using mlock().
> Isn't msync() reliable? I.e. will it at least report the error?

Seems latest 2.6 (19 Aug change sets by Andrew Morton) got support for
this: shrink_list() set AS_ENOSPC on mapping and error will later be

> -- Jamie

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