Re: [patch] fix race in __block_prepare_write (again)

[Nikita Danilov]

Anton Altaparmakov writes:

[...]

 > 
 > mm/filemap.c::file_buffered_write():
 > 
 > - It calls fault_in_pages_readable() which is completely bogus if
 > @nr_segs > 1.  It needs to be replaced by a to be written
 > "fault_in_pages_readable_iovec()".

Which will be only marginally less bogus, because page(s) can be evicted
from the memory between fault_in_pages_readable*() and
__grab_cache_page() anyway.

[...]

 > Best regards,
 > 
 >         Anton

Nikita.
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