[PATCH] dm: Fix deadlock under high i/o load in raid1 setup. On an nForce4-equipped machine with two SATA disk in raid1 setup using dmraid, we experienced frequent deadlock of the system under high i/o load. 'cat /dev/zero > ~/zero' was the most reliable way to reproduce them: Randomly after a few GB, 'cp' would be left in 'D' state along with kjournald and kmirrord. The functions cp and kjournald were blocked in did vary, but kmirrord's wchan always pointed to 'mempool_alloc()'. We've seen this pattern on 2.6.15 and 2.6.17 kernels. http://lkml.org/lkml/2005/4/20/142 indicates that this problem has been around even before.
у меня как раз nForce4 и raid1, правда вроде шуршит всё и так. 2.6.16.27
SUBJ-rc7 вроде летал ничего так себе, будем обновляться... С .17.13 были непонятные глюки с дровами для АТИ, с .16.29 - все пучком и вообще полный порядок.