Red Hat Bugzilla – Bug 111068
Kernel hangs under heavy network IO doing dd over proprietary filesystem
Last modified: 2006-02-21 14:00:12 EST
Description of problem:
However in do_try_to_free_pages() (mm/vmscan.c) there is no call
to refill_freelist(). It looks like the call to refill_freelist()
was mistakenly removed when do_try_to_free_pages() cloned into
do_try_to_free_pages_kswapd(). (Maybe refill_freelist() was to be
removed in do_try_to_free_pages_kswapd() ?).
FWIW, in 2.4.18-19.7.x there is a call to refill_freelist() from
This results in a kernel hang when the workload recycles lots of
When we added the missing call to refill_freelist() in
do_try_to_free_pages(), the test was succesfull and the kernel did
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install Panasas proprietary filesystem and mount network based
2. Repeatedly do dd and cp to/from Panasas filesystem and
3. Watch free pages dwindle till the kernel hangs.
Kernel is not responsive. Can ping the host, but can not ssh to it.
No response to keyboard. Does respond to sysrq magic keys.
Adding refill_freelist() in do_try_to_free_pages()(mm/vmscan.c:879)
ensured that there were free pages and the test completed.
*** This bug has been marked as a duplicate of 78616 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.