From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- fs/dlm/memory.c | 179 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 fs/dlm/memory.c (limited to 'fs/dlm/memory.c') diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c new file mode 100644 index 000000000..ee55994ce --- /dev/null +++ b/fs/dlm/memory.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0-only +/****************************************************************************** +******************************************************************************* +** +** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. +** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. +** +** +******************************************************************************* +******************************************************************************/ + +#include "dlm_internal.h" +#include "midcomms.h" +#include "lowcomms.h" +#include "config.h" +#include "memory.h" +#include "ast.h" + +static struct kmem_cache *writequeue_cache; +static struct kmem_cache *mhandle_cache; +static struct kmem_cache *msg_cache; +static struct kmem_cache *lkb_cache; +static struct kmem_cache *rsb_cache; +static struct kmem_cache *cb_cache; + + +int __init dlm_memory_init(void) +{ + writequeue_cache = dlm_lowcomms_writequeue_cache_create(); + if (!writequeue_cache) + goto out; + + mhandle_cache = dlm_midcomms_cache_create(); + if (!mhandle_cache) + goto mhandle; + + lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb), + __alignof__(struct dlm_lkb), 0, NULL); + if (!lkb_cache) + goto lkb; + + msg_cache = dlm_lowcomms_msg_cache_create(); + if (!msg_cache) + goto msg; + + rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb), + __alignof__(struct dlm_rsb), 0, NULL); + if (!rsb_cache) + goto rsb; + + cb_cache = kmem_cache_create_usercopy("dlm_cb", sizeof(struct dlm_callback), + __alignof__(struct dlm_callback), 0, + offsetof(struct dlm_callback, lvbptr), + sizeof_field(struct dlm_callback, lvbptr), + NULL); + if (!cb_cache) + goto cb; + + return 0; + +cb: + kmem_cache_destroy(rsb_cache); +rsb: + kmem_cache_destroy(msg_cache); +msg: + kmem_cache_destroy(lkb_cache); +lkb: + kmem_cache_destroy(mhandle_cache); +mhandle: + kmem_cache_destroy(writequeue_cache); +out: + return -ENOMEM; +} + +void dlm_memory_exit(void) +{ + rcu_barrier(); + + kmem_cache_destroy(writequeue_cache); + kmem_cache_destroy(mhandle_cache); + kmem_cache_destroy(msg_cache); + kmem_cache_destroy(lkb_cache); + kmem_cache_destroy(rsb_cache); + kmem_cache_destroy(cb_cache); +} + +char *dlm_allocate_lvb(struct dlm_ls *ls) +{ + return kzalloc(ls->ls_lvblen, GFP_ATOMIC); +} + +void dlm_free_lvb(char *p) +{ + kfree(p); +} + +struct dlm_rsb *dlm_allocate_rsb(void) +{ + return kmem_cache_zalloc(rsb_cache, GFP_ATOMIC); +} + +static void __free_rsb_rcu(struct rcu_head *rcu) +{ + struct dlm_rsb *r = container_of(rcu, struct dlm_rsb, rcu); + if (r->res_lvbptr) + dlm_free_lvb(r->res_lvbptr); + kmem_cache_free(rsb_cache, r); +} + +void dlm_free_rsb(struct dlm_rsb *r) +{ + call_rcu(&r->rcu, __free_rsb_rcu); +} + +struct dlm_lkb *dlm_allocate_lkb(void) +{ + return kmem_cache_zalloc(lkb_cache, GFP_ATOMIC); +} + +static void __free_lkb_rcu(struct rcu_head *rcu) +{ + struct dlm_lkb *lkb = container_of(rcu, struct dlm_lkb, rcu); + + if (test_bit(DLM_DFL_USER_BIT, &lkb->lkb_dflags)) { + struct dlm_user_args *ua; + ua = lkb->lkb_ua; + if (ua) { + kfree(ua->lksb.sb_lvbptr); + kfree(ua); + } + } + + kmem_cache_free(lkb_cache, lkb); +} + +void dlm_free_lkb(struct dlm_lkb *lkb) +{ + call_rcu(&lkb->rcu, __free_lkb_rcu); +} + +struct dlm_mhandle *dlm_allocate_mhandle(void) +{ + return kmem_cache_alloc(mhandle_cache, GFP_ATOMIC); +} + +void dlm_free_mhandle(struct dlm_mhandle *mhandle) +{ + kmem_cache_free(mhandle_cache, mhandle); +} + +struct writequeue_entry *dlm_allocate_writequeue(void) +{ + return kmem_cache_alloc(writequeue_cache, GFP_ATOMIC); +} + +void dlm_free_writequeue(struct writequeue_entry *writequeue) +{ + kmem_cache_free(writequeue_cache, writequeue); +} + +struct dlm_msg *dlm_allocate_msg(void) +{ + return kmem_cache_alloc(msg_cache, GFP_ATOMIC); +} + +void dlm_free_msg(struct dlm_msg *msg) +{ + kmem_cache_free(msg_cache, msg); +} + +struct dlm_callback *dlm_allocate_cb(void) +{ + return kmem_cache_alloc(cb_cache, GFP_ATOMIC); +} + +void dlm_free_cb(struct dlm_callback *cb) +{ + kmem_cache_free(cb_cache, cb); +} -- cgit v1.3.1