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SubjectRe: Boot failure with ext2 and initrds
>>>>> Andrew Morton (AM) writes:

AM> What lock protects the fields in struct ext[234]_reserve_window from being
AM> concurrently modified by two CPUs? None, it seems. Ditto
AM> ext[234]_reserve_window_node. i_mutex will cover it for write(), but not
AM> for pageout over a file hole. If we end up with a zero- or negative-sized
AM> window then odd things might happen.


thanks, Alex

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