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From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	m.felsch@pengutronix.de
Subject: [PATCH 19/51] drm: Cleanups after drmm_add_final_kfree rollout
Date: Thu, 27 Feb 2020 19:14:50 +0100	[thread overview]
Message-ID: <20200227181522.2711142-20-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <20200227181522.2711142-1-daniel.vetter@ffwll.ch>

A few things:
- Update the example driver in the documentation.
- We can drop the old kfree in drm_dev_release.
- Add a WARN_ON check in drm_dev_register to make sure everyone calls
  drmm_add_final_kfree and there's no leaks.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
 drivers/gpu/drm/drm_drv.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 9e62e28bbc62..1ee606b4a4f9 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -297,8 +297,6 @@ void drm_minor_release(struct drm_minor *minor)
  *
  *		drm_mode_config_cleanup(drm);
  *		drm_dev_fini(drm);
- *		kfree(priv->userspace_facing);
- *		kfree(priv);
  *	}
  *
  *	static struct drm_driver driver_drm_driver = {
@@ -326,10 +324,11 @@ void drm_minor_release(struct drm_minor *minor)
  *			kfree(drm);
  *			return ret;
  *		}
+ *		drmm_add_final_kfree(drm, priv);
  *
  *		drm_mode_config_init(drm);
  *
- *		priv->userspace_facing = kzalloc(..., GFP_KERNEL);
+ *		priv->userspace_facing = drmm_kzalloc(..., GFP_KERNEL);
  *		if (!priv->userspace_facing)
  *			return -ENOMEM;
  *
@@ -834,10 +833,6 @@ static void drm_dev_release(struct kref *ref)
 		dev->driver->release(dev);
 	} else {
 		drm_dev_fini(dev);
-		if (!dev->managed.final_kfree) {
-			WARN_ON(!list_empty(&dev->managed.resources));
-			kfree(dev);
-		}
 	}
 
 	drm_managed_release(dev);
@@ -960,6 +955,8 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
 	struct drm_driver *driver = dev->driver;
 	int ret;
 
+	WARN_ON(!dev->managed.final_kfree);
+
 	if (drm_dev_needs_global_mutex(dev))
 		mutex_lock(&drm_global_mutex);
 
-- 
2.24.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	m.felsch@pengutronix.de, l.stach@pengutronix.de
Subject: [Intel-gfx] [PATCH 19/51] drm: Cleanups after drmm_add_final_kfree rollout
Date: Thu, 27 Feb 2020 19:14:50 +0100	[thread overview]
Message-ID: <20200227181522.2711142-20-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <20200227181522.2711142-1-daniel.vetter@ffwll.ch>

A few things:
- Update the example driver in the documentation.
- We can drop the old kfree in drm_dev_release.
- Add a WARN_ON check in drm_dev_register to make sure everyone calls
  drmm_add_final_kfree and there's no leaks.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
 drivers/gpu/drm/drm_drv.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 9e62e28bbc62..1ee606b4a4f9 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -297,8 +297,6 @@ void drm_minor_release(struct drm_minor *minor)
  *
  *		drm_mode_config_cleanup(drm);
  *		drm_dev_fini(drm);
- *		kfree(priv->userspace_facing);
- *		kfree(priv);
  *	}
  *
  *	static struct drm_driver driver_drm_driver = {
@@ -326,10 +324,11 @@ void drm_minor_release(struct drm_minor *minor)
  *			kfree(drm);
  *			return ret;
  *		}
+ *		drmm_add_final_kfree(drm, priv);
  *
  *		drm_mode_config_init(drm);
  *
- *		priv->userspace_facing = kzalloc(..., GFP_KERNEL);
+ *		priv->userspace_facing = drmm_kzalloc(..., GFP_KERNEL);
  *		if (!priv->userspace_facing)
  *			return -ENOMEM;
  *
@@ -834,10 +833,6 @@ static void drm_dev_release(struct kref *ref)
 		dev->driver->release(dev);
 	} else {
 		drm_dev_fini(dev);
-		if (!dev->managed.final_kfree) {
-			WARN_ON(!list_empty(&dev->managed.resources));
-			kfree(dev);
-		}
 	}
 
 	drm_managed_release(dev);
@@ -960,6 +955,8 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
 	struct drm_driver *driver = dev->driver;
 	int ret;
 
+	WARN_ON(!dev->managed.final_kfree);
+
 	if (drm_dev_needs_global_mutex(dev))
 		mutex_lock(&drm_global_mutex);
 
-- 
2.24.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  parent reply	other threads:[~2020-02-27 18:16 UTC|newest]

Thread overview: 218+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-27 18:14 [PATCH 00/51] drm managed resources, v3 Daniel Vetter
2020-02-27 18:14 ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 01/51] mm/sl[uo]b: export __kmalloc_track(_node)_caller Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14   ` Daniel Vetter
2020-02-27 18:14 ` [PATCH 02/51] drm/i915: Don't clear drvdata in ->release Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 03/51] drm: add managed resources tied to drm_device Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-28 22:45   ` Sam Ravnborg
2020-02-28 22:45     ` [Intel-gfx] " Sam Ravnborg
2020-02-28 23:14     ` Daniel Vetter
2020-02-28 23:14       ` [Intel-gfx] " Daniel Vetter
2020-02-29 11:17       ` Sam Ravnborg
2020-02-29 11:17         ` [Intel-gfx] " Sam Ravnborg
2020-02-29 11:28         ` Daniel Vetter
2020-02-29 11:28           ` [Intel-gfx] " Daniel Vetter
2020-03-02  9:22           ` Jani Nikula
2020-03-02  9:22             ` [Intel-gfx] " Jani Nikula
2020-03-02  9:36             ` Daniel Vetter
2020-03-02  9:36               ` [Intel-gfx] " Daniel Vetter
2020-03-02  9:36               ` Daniel Vetter
2020-03-02  9:39             ` Daniel Vetter
2020-03-02  9:39               ` [Intel-gfx] " Daniel Vetter
2020-03-02 16:34               ` Sam Ravnborg
2020-03-02 16:34                 ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:14 ` [PATCH 04/51] drm: Set final_kfree in drm_dev_alloc Daniel Vetter
2020-02-27 18:14   ` [Xen-devel] " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 05/51] drm/mipi_dbi: Use drmm_add_final_kfree in all drivers Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 20:55   ` Sam Ravnborg
2020-02-27 20:55     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:14 ` [PATCH 06/51] drm/udl: Use drmm_add_final_kfree Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 20:57   ` Sam Ravnborg
2020-02-27 20:57     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:14 ` [PATCH 07/51] drm/qxl: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14   ` Daniel Vetter
2020-02-27 18:14 ` [PATCH 08/51] drm/i915: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 09/51] drm/cirrus: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14   ` Daniel Vetter
2020-02-27 21:01   ` Sam Ravnborg
2020-02-27 21:01     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 21:01     ` Sam Ravnborg
2020-02-27 18:14 ` [PATCH 10/51] drm/v3d: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 11/51] drm/tidss: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 12/51] drm/mcde: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 13/51] drm/vgem: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 21:02   ` Sam Ravnborg
2020-02-27 21:02     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:14 ` [PATCH 14/51] drm/vkms: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:59   ` Rodrigo Siqueira
2020-02-27 18:59     ` [Intel-gfx] " Rodrigo Siqueira
2020-02-27 18:14 ` [PATCH 15/51] drm/repaper: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 16/51] drm/inigenic: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-03-02 20:12   ` Paul Cercueil
2020-03-02 20:12     ` [Intel-gfx] " Paul Cercueil
2020-02-27 18:14 ` [PATCH 17/51] drm/gm12u320: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 18/51] drm/<drivers>: " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:35   ` Liviu Dudau
2020-02-27 18:35     ` [Intel-gfx] " Liviu Dudau
2020-02-27 18:14 ` Daniel Vetter [this message]
2020-02-27 18:14   ` [Intel-gfx] [PATCH 19/51] drm: Cleanups after drmm_add_final_kfree rollout Daniel Vetter
2020-02-27 18:14 ` [PATCH 20/51] drm: Handle dev->unique with drmm_ Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 21/51] drm: Use drmm_ for drm_dev_init cleanup Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 22/51] drm: manage drm_minor cleanup with drmm_ Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 23/51] drm: Manage drm_gem_init " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 24/51] drm: Manage drm_vblank_cleanup " Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 25/51] drm: Garbage collect drm_dev_fini Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 26/51] drm: Manage drm_mode_config_init with drmm_ Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-28  7:30   ` Thomas Zimmermann
2020-02-28  7:30     ` [Intel-gfx] " Thomas Zimmermann
2020-02-28  8:43     ` Daniel Vetter
2020-02-28  8:43       ` [Intel-gfx] " Daniel Vetter
2020-02-28  9:56       ` Thomas Zimmermann
2020-02-28  9:56         ` [Intel-gfx] " Thomas Zimmermann
2020-02-28 20:26   ` Sam Ravnborg
2020-02-28 20:26     ` [Intel-gfx] " Sam Ravnborg
2020-02-28 23:11     ` Daniel Vetter
2020-02-28 23:11       ` [Intel-gfx] " Daniel Vetter
2020-02-29 10:59       ` Sam Ravnborg
2020-02-29 10:59         ` [Intel-gfx] " Sam Ravnborg
2020-03-02 14:09       ` Daniel Vetter
2020-03-02 14:09         ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 27/51] drm/bochs: Remove leftover drm_atomic_helper_shutdown Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14 ` [PATCH 28/51] drm/bochs: Drop explicit drm_mode_config_cleanup Daniel Vetter
2020-02-27 18:14   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:14   ` Daniel Vetter
2020-02-27 18:15 ` [PATCH 29/51] drm/cirrus: Drop explicit drm_mode_config_cleanup call Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-28 20:32   ` Sam Ravnborg
2020-02-28 20:32     ` [Intel-gfx] " Sam Ravnborg
2020-02-28 20:32     ` Sam Ravnborg
2020-02-27 18:15 ` [PATCH 30/51] drm/cirrus: Fully embrace devm_ Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-27 18:15 ` [PATCH 31/51] drm/ingenic: Drop explicit drm_mode_config_cleanup call Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-03-02 20:13   ` Paul Cercueil
2020-03-02 20:13     ` [Intel-gfx] " Paul Cercueil
2020-02-27 18:15 ` [PATCH 32/51] drm/mcde: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 33/51] drm/mcde: More devm_drm_dev_init Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 34/51] drm/meson: Drop explicit drm_mode_config_cleanup call Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-27 18:15 ` [PATCH 35/51] drm/pl111: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 36/51] drm/rcar-du: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-27 18:15 ` [PATCH 37/51] drm/rockchip: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-28 21:19   ` kbuild test robot
2020-02-28 21:19     ` kbuild test robot
2020-02-28 21:19     ` [Intel-gfx] " kbuild test robot
2020-02-28 21:19     ` kbuild test robot
2020-02-28 21:19     ` kbuild test robot
2020-02-28 23:34     ` Daniel Vetter
2020-02-28 23:34       ` Daniel Vetter
2020-02-28 23:34       ` [Intel-gfx] " Daniel Vetter
2020-02-28 23:34       ` Daniel Vetter
2020-02-28 23:34       ` Daniel Vetter
2020-02-29  1:53   ` kbuild test robot
2020-02-29  1:53     ` kbuild test robot
2020-02-29  1:53     ` [Intel-gfx] " kbuild test robot
2020-02-29  1:53     ` kbuild test robot
2020-02-29  1:53     ` kbuild test robot
2020-02-27 18:15 ` [PATCH 38/51] drm/stm: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-27 18:15 ` [PATCH 39/51] drm/shmob: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15   ` Daniel Vetter
2020-02-27 18:15 ` [PATCH 40/51] drm/mtk: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 41/51] drm/tidss: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 42/51] drm/gm12u320: More drmm_ Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 43/51] drm/gm12u320: Use devm_drm_dev_init Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 44/51] drm/gm12u320: Use helpers for shutdown/suspend/resume Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 45/51] drm/gm12u320: Simplify upload work Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 19:04   ` Hans de Goede
2020-02-27 19:04     ` [Intel-gfx] " Hans de Goede
2020-02-27 18:15 ` [PATCH 46/51] drm/repaper: Drop explicit drm_mode_config_cleanup call Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 47/51] drm/mipi-dbi: Move drm_mode_config_init into mipi library Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-28 20:34   ` Sam Ravnborg
2020-02-28 20:34     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:15 ` [PATCH 48/51] drm/mipi-dbi: Drop explicit drm_mode_config_cleanup call Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-28 20:36   ` Sam Ravnborg
2020-02-28 20:36     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:15 ` [PATCH 49/51] drm/udl: " Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-28 20:37   ` Sam Ravnborg
2020-02-28 20:37     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 18:15 ` [PATCH 50/51] drm/udl: drop drm_driver.release hook Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-28  7:43   ` Thomas Zimmermann
2020-02-28  7:43     ` [Intel-gfx] " Thomas Zimmermann
2020-02-28  8:40     ` Daniel Vetter
2020-02-28  8:40       ` [Intel-gfx] " Daniel Vetter
2020-02-28 11:46       ` Thomas Zimmermann
2020-02-28 11:46         ` [Intel-gfx] " Thomas Zimmermann
2020-02-28 17:43         ` Daniel Vetter
2020-02-28 17:43           ` [Intel-gfx] " Daniel Vetter
2020-03-02  8:14           ` Thomas Zimmermann
2020-03-02  8:14             ` [Intel-gfx] " Thomas Zimmermann
2020-03-02  9:01             ` Daniel Vetter
2020-03-02  9:01               ` [Intel-gfx] " Daniel Vetter
2020-02-27 18:15 ` [PATCH 51/51] drm: Add docs for managed resources Daniel Vetter
2020-02-27 18:15   ` [Intel-gfx] " Daniel Vetter
2020-02-27 20:53   ` Sam Ravnborg
2020-02-27 20:53     ` [Intel-gfx] " Sam Ravnborg
2020-02-27 22:45 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm managed resources, v3 Patchwork
2020-02-27 22:47 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-02-27 23:08 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-02-29  5:27 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2020-03-23 14:48 [PATCH 00/51] drm_device managed resources, v5 Daniel Vetter
2020-03-23 14:49 ` [PATCH 19/51] drm: Cleanups after drmm_add_final_kfree rollout Daniel Vetter
2020-04-02  0:50   ` Laurent Pinchart
2020-04-02  5:17     ` Daniel Vetter
2020-04-02  9:39       ` Laurent Pinchart
2020-04-02  9:50         ` Daniel Vetter
2020-03-02 22:25 [PATCH 00/51] drm_device managed resources, v4 Daniel Vetter
2020-03-02 22:25 ` [PATCH 19/51] drm: Cleanups after drmm_add_final_kfree rollout Daniel Vetter
2020-03-06 20:29   ` Sam Ravnborg
2020-03-11  9:15   ` Thomas Zimmermann
2020-02-21 21:02 [PATCH 00/51] drm managed resources, v2 Daniel Vetter
2020-02-21 21:02 ` [PATCH 19/51] drm: Cleanups after drmm_add_final_kfree rollout Daniel Vetter

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