commit: 87186475a402391a1ca7d42a675c9b35a18dc348 From: Rafael J. Wysocki <[email protected]> Date: Tue, 10 May 2011 21:09:53 +0200 Subject: [PATCH] PM: Fix warning in pm_restrict_gfp_mask() during SNAPSHOT_S2RAM ioctl
A warning is printed by pm_restrict_gfp_mask() while the SNAPSHOT_S2RAM ioctl is being executed after creating a hibernation image, because pm_restrict_gfp_mask() has been called once already before the image creation and suspend_devices_and_enter() calls it once again. This happens after commit 452aa6999e6703ffbddd7f6ea124d3 (mm/pm: force GFP_NOIO during suspend/hibernation and resume). To avoid this issue, move pm_restrict_gfp_mask() and pm_restore_gfp_mask() from suspend_devices_and_enter() to its caller in kernel/power/suspend.c. Reported-by: Alexandre Felipe Muller de Souza <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> Cc: [email protected] --- kernel/power/suspend.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 8935369..6275970 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -216,7 +216,6 @@ int suspend_devices_and_enter(suspend_state_t state) goto Close; } suspend_console(); - pm_restrict_gfp_mask(); suspend_test_start(); error = dpm_suspend_start(PMSG_SUSPEND); if (error) { @@ -233,7 +232,6 @@ int suspend_devices_and_enter(suspend_state_t state) suspend_test_start(); dpm_resume_end(PMSG_RESUME); suspend_test_finish("resume devices"); - pm_restore_gfp_mask(); resume_console(); Close: if (suspend_ops->end) @@ -294,7 +292,9 @@ int enter_state(suspend_state_t state) goto Finish; pr_debug("PM: Entering %s sleep\n", pm_states[state]); + pm_restrict_gfp_mask(); error = suspend_devices_and_enter(state); + pm_restore_gfp_mask(); Finish: pr_debug("PM: Finishing wakeup.\n"); _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
