Re: posix_fallocate question again

[Nikita Danilov]

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
returned.

 > 
 > -- Jamie

Nikita.
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