zfsonlinux/zfs — pull request #1009 by chrisrd (2012-10-04 06:33:34+00:00)
Title: Switch KM_SLEEP to KM_PUSHPAGE

This warning indicates the incorrect use of KM_SLEEP in a call
path which must use KM_PUSHPAGE to avoid deadlocking in direct
reclaim. See commit b8d06fc for additional details.

SPL: Fixing allocation for task txg_sync (6093) which
used GFP flags 0x297bda7c with PF_NOFS set

Signed-off-by: Chris Dunlop