On Sat, 27 Aug 2011 12:32:01 +0300 Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx> wrote: > After commit v2.6.36-5896-gd065bd8 "mm: retry page fault when blocking on disk transfer" > we usually wait in page-faults without mmap_sem held, so all swap-token logic was broken, > because it based on using rwsem_is_locked(&mm->mmap_sem) as sign of in progress page-faults. If I'm interpreting this correctly, the thrash-handling logic has been effectively disabled for a year and nobody noticed. > This patch adds to mm_struct atomic counter of in progress page-faults for mm with swap-token. We desperately need to delete some code from mm/. This seems like a great candidate. Someone prove me wrong? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>