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Alan Stern <stern@rowland.harvard.edu> wrote: > > Can somebody please tell me where the code is that performs optimistic > readahead when a process does sequential reads on a block device? mm/readahead.c:__do_page_cache_readahead() is the main one. Use dump_stack() to be sure. > And can someone explain why those readahead calls are allowed to extend > beyond the end of the device? It has a check in there for reads past the blockdev mapping's i_size. Maybe i_size is wrong, or maybe the code is wrong, or maybe it's a different caller. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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