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2023-09-05MAINTAINERS: Update gfs2 mailing listAndrew Price
Signed-off-by: Andrew Price <anprice@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05mailbox: qcom-ipcc: fix incorrect num_chans countingJonathan Marek
Breaking out early when a match is found leads to an incorrect num_chans value when more than one ipcc mailbox channel is used by the same device. Fixes: e9d50e4b4d04 ("mailbox: qcom-ipcc: Dynamic alloc for channel arrangement") Signed-off-by: Jonathan Marek <jonathan@marek.ca> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: Explicitly include correct DT includesRob Herring
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: ti-msgmgr: Use devm_platform_ioremap_resource_byname()Li Zetao
Convert platform_get_resource_byname() + devm_ioremap_resource() to a single call to devm_platform_ioremap_resource_byname(), as this is exactly what this function does. Signed-off-by: Li Zetao <lizetao1@huawei.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: platform-mhu: Remove redundant dev_err()Ruan Jinjie
There is no need to call the dev_err() function directly to print a custom message when handling an error from platform_get_irq() function as it is going to display an appropriate error message in case of a failure. Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: bcm-pdc: Fix some kernel-doc commentsYang Li
Fix some kernel-doc comments to silence the warnings: drivers/mailbox/bcm-pdc-mailbox.c:707: warning: Function parameter or member 'pdcs' not described in 'pdc_tx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:707: warning: Excess function parameter 'spu_idx' description in 'pdc_tx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:875: warning: Function parameter or member 'pdcs' not described in 'pdc_rx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:875: warning: Excess function parameter 'spu_idx' description in 'pdc_rx_list_sg_add' drivers/mailbox/bcm-pdc-mailbox.c:966: warning: Function parameter or member 't' not described in 'pdc_tasklet_cb' drivers/mailbox/bcm-pdc-mailbox.c:966: warning: Excess function parameter 'data' description in 'pdc_tasklet_cb' Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: mailbox-test: Fix an error check in mbox_test_probe()Minjie Du
mbox_test_request_channel() function returns NULL or error value embedded in the pointer (PTR_ERR). Evaluate the return value using IS_ERR_OR_NULL. Signed-off-by: Minjie Du <duminjie@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: tegra-hsp: Convert to devm_platform_ioremap_resource()Yangtao Li
Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: rockchip: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: mailbox-test: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: bcm-pdc: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05mailbox: bcm-ferxrm-mailbox: Use devm_platform_get_and_ioremap_resource()Yangtao Li
Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2023-09-05perf: CXL: fix mismatched number of counters maskJeongtae Park
The number of Count Units field is described as 6 bits long in the CXL 3.0 specification. However, its mask value was only declared as 5 bits long. Signed-off-by: Jeongtae Park <jtp.park@samsung.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20230905123309.775854-1-jtp.park@samsung.com Signed-off-by: Will Deacon <will@kernel.org>
2023-09-05drm/bridge: lt8912b: Add missing drm_bridge_attach callTomi Valkeinen
The driver does not call drm_bridge_attach(), which causes the next bridge to not be added to the bridge chain. This causes the pipeline init to fail when DRM_BRIDGE_ATTACH_NO_CONNECTOR is used. Add the call to drm_bridge_attach(). Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Robert Foss <rfoss@kernel.org> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-4-c542692c6a2f@ideasonboard.com
2023-09-05drm/bridge: lt8912b: Manually disable HPD only if it was enabledTomi Valkeinen
lt8912b only calls drm_bridge_hpd_enable() if it creates a connector and the next bridge has DRM_BRIDGE_OP_HPD set. However, when calling drm_bridge_hpd_disable() it misses checking if a connector was created, calling drm_bridge_hpd_disable() even if HPD was never enabled. I don't see any issues caused by this wrong call, though. Add the check to avoid wrongly calling drm_bridge_hpd_disable(). Fixes: 3b0a01a6a522 ("drm/bridge: lt8912b: Add hot plug detection") Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Reviewed-by: Robert Foss <rfoss@kernel.org> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-3-c542692c6a2f@ideasonboard.com
2023-09-05drm/bridge: lt8912b: Fix crash on bridge detachTomi Valkeinen
The lt8912b driver, in its bridge detach function, calls drm_connector_unregister() and drm_connector_cleanup(). drm_connector_unregister() should be called only for connectors explicitly registered with drm_connector_register(), which is not the case in lt8912b. The driver's drm_connector_funcs.destroy hook is set to drm_connector_cleanup(). Thus the driver should not call either drm_connector_unregister() nor drm_connector_cleanup() in its lt8912_bridge_detach(), as they cause a crash on bridge detach: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000000858f3000 [0000000000000000] pgd=0800000085918003, p4d=0800000085918003, pud=0800000085431003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: tidss(-) display_connector lontium_lt8912b tc358768 panel_lvds panel_simple drm_dma_helper drm_kms_helper drm drm_panel_orientation_quirks CPU: 3 PID: 462 Comm: rmmod Tainted: G W 6.5.0-rc2+ #2 Hardware name: Toradex Verdin AM62 on Verdin Development Board (DT) pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_connector_cleanup+0x78/0x2d4 [drm] lr : lt8912_bridge_detach+0x54/0x6c [lontium_lt8912b] sp : ffff800082ed3a90 x29: ffff800082ed3a90 x28: ffff0000040c1940 x27: 0000000000000000 x26: 0000000000000000 x25: dead000000000122 x24: dead000000000122 x23: dead000000000100 x22: ffff000003fb6388 x21: 0000000000000000 x20: 0000000000000000 x19: ffff000003fb6260 x18: fffffffffffe56e8 x17: 0000000000000000 x16: 0010000000000000 x15: 0000000000000038 x14: 0000000000000000 x13: ffff800081914b48 x12: 000000000000040e x11: 000000000000015a x10: ffff80008196ebb8 x9 : ffff800081914b48 x8 : 00000000ffffefff x7 : ffff0000040c1940 x6 : ffff80007aa649d0 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008159e008 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: drm_connector_cleanup+0x78/0x2d4 [drm] lt8912_bridge_detach+0x54/0x6c [lontium_lt8912b] drm_bridge_detach+0x44/0x84 [drm] drm_encoder_cleanup+0x40/0xb8 [drm] drmm_encoder_alloc_release+0x1c/0x30 [drm] drm_managed_release+0xac/0x148 [drm] drm_dev_put.part.0+0x88/0xb8 [drm] devm_drm_dev_init_release+0x14/0x24 [drm] devm_action_release+0x14/0x20 release_nodes+0x5c/0x90 devres_release_all+0x8c/0xe0 device_unbind_cleanup+0x18/0x68 device_release_driver_internal+0x208/0x23c driver_detach+0x4c/0x94 bus_remove_driver+0x70/0xf4 driver_unregister+0x30/0x60 platform_driver_unregister+0x14/0x20 tidss_platform_driver_exit+0x18/0xb2c [tidss] __arm64_sys_delete_module+0x1a0/0x2b4 invoke_syscall+0x48/0x110 el0_svc_common.constprop.0+0x60/0x10c do_el0_svc_compat+0x1c/0x40 el0_svc_compat+0x40/0xac el0t_32_sync_handler+0xb0/0x138 el0t_32_sync+0x194/0x198 Code: 9104a276 f2fbd5b7 aa0203e1 91008af8 (f85c0420) Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Robert Foss <rfoss@kernel.org> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-2-c542692c6a2f@ideasonboard.com
2023-09-05drm/bridge: lt8912b: Fix bridge_detachTomi Valkeinen
The driver calls lt8912_bridge_detach() from its lt8912_remove() function. As the DRM core detaches bridges automatically, this leads to calling lt8912_bridge_detach() twice. The code probably has tried to manage the double-call with the 'is_attached' variable, but the driver never sets the variable to false, so its of no help. Fix the issue by dropping the call to lt8912_bridge_detach() from lt8912_remove(), as the DRM core will handle the detach call for us, and also drop the useless is_attached field. Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Robert Foss <rfoss@kernel.org> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-1-c542692c6a2f@ideasonboard.com
2023-09-05io_uring: add a sysctl to disable io_uring system-wideMatteo Rizzo
Introduce a new sysctl (io_uring_disabled) which can be either 0, 1, or 2. When 0 (the default), all processes are allowed to create io_uring instances, which is the current behavior. When 1, io_uring creation is disabled (io_uring_setup() will fail with -EPERM) for unprivileged processes not in the kernel.io_uring_group group. When 2, calls to io_uring_setup() fail with -EPERM regardless of privilege. Signed-off-by: Matteo Rizzo <matteorizzo@google.com> [JEM: modified to add io_uring_group] Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Link: https://lore.kernel.org/r/x49y1i42j1z.fsf@segfault.boston.devel.redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-09-05drm: bridge: it66121: Fix invalid connector dereferenceJai Luthra
Fix the NULL pointer dereference when no monitor is connected, and the sound card is opened from userspace. Instead return an empty buffer (of zeroes) as the EDID information to the sound framework if there is no connector attached. Fixes: e0fd83dbe924 ("drm: bridge: it66121: Add audio support") Reported-by: Nishanth Menon <nm@ti.com> Closes: https://lore.kernel.org/all/20230825105849.crhon42qndxqif4i@gondola/ Reviewed-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Jai Luthra <j-luthra@ti.com> Tested-by: Nishanth Menon <nm@ti.com> Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230901-it66121_edid-v2-1-aa59605336b9@ti.com
2023-09-05drm: bridge: it66121: Simplify probe()Biju Das
Simplify probe() by replacing of_device_get_match_data() and ID lookup for retrieving match data by i2c_get_match_data(). Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230818191817.340360-3-biju.das.jz@bp.renesas.com
2023-09-05drm: bridge: it66121: Extend match support for OF tablesBiju Das
The driver has OF match table, still it uses ID lookup table for retrieving match data. Currently the driver is working on the assumption that a I2C device registered via OF will always match a legacy I2C device ID. The correct approach is to have an OF device ID table using of_device_match_data() if the devices are registered via OF. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230818191817.340360-2-biju.das.jz@bp.renesas.com
2023-09-05gfs2: change qd_slot_count to qd_slot_refBob Peterson
Variable qd_slot_count is a reference count, not a count of slots. This patch renames it to qd_slot_ref to make that more clear. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: check for no eligible quota changesBob Peterson
Before this patch, function gfs2_quota_sync would always allocate a page full of memory and increment its quota sync generation number. This happened even when the system was completely idle or if no blocks were allocated or quota changes made. This patch adds function qd_changed to determine if any changes have been made that qualify for a quota sync. If not, it avoids the memory allocation and bumping the generation number, along with all the additional work it would do. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Remove useless assignmentBob Peterson
This assignment is unnecessary because if error was not already 0, it would have branched to an error label already. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: simplify slot_getBob Peterson
Simplify function slot_get and get rid of the goto that jumps into the middle of an else branch. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Simplify qd2offsetBob Peterson
This is a minor cleanup of function qd2offset. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: introduce qd_bh_get_or_undoBob Peterson
This patch is an attempt to force some consistency in quota sync processing. Two functions (qd_fish and gfs2_quota_unlock) called qd_check_sync, after which they both called bh_get, and if that failed, they took the same steps to undo the actions of qd_check_sync. This patch introduces a new function, qd_bh_get_or_undo, which performs the same steps, reducing code redundancy. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Remove quota allocation info from quota fileBob Peterson
Function do_sync called gfs2_qa_get and put for quota allocation data. But the inode in question is the system master quota file, which is never subject to quotas. Therefore, a qa structure should be unnecessary and if anything accesses it, it's probably a bug. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: use constant for array sizeBob Peterson
Function gfs2_quota_unlock declared an array of 4 qd elements. We have a constant for that, we should be using it. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Set qd_sync_gen in do_syncBob Peterson
Func do_sync was called in two places: gfs2_quota_unlock and gfs2_quota_sync. In gfs2_quota_sync it updated qd_sync_gen to the latest superblock sync gen, if do_sync was successful. In gfs2_quota_unlock it didn't update the value. That can only lead to extra work, for example, if the value is synced by gfs2_quota_unlock but still has the old value. This patch moves the setting of qd_sync_gen inside do_sync so we are guaranteed consistency. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Remove useless err setBob Peterson
Function gfs2_adjust_quota set variable err, then set it again to a different value. This patch removes the redundant set. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Small gfs2_quota_lock cleanupBob Peterson
No need to set error = 0 since it's set further down. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: move qdsb_put and reduce redundancyBob Peterson
This patch looks more invasive than it is. It simply moves function qdsb_put before qd_unlock, then changes qd_unlock to call it rather than open coding it. Again, this reduces redundancy. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: improvements to sysfs statusBob Peterson
This patch adds some new fields to the gfs2 status file in sysfs to aid in debugging. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Don't try to sync non-changesBob Peterson
Function need_sync is supposed to determine if a qd element needs to be synced. If the "change" (qd_change) is zero, it does not need to be synced because there's literally no change in the value. Before this patch need_sync returned false if value < 0. That should be <= 0. This patch changes the check to <=. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Simplify function need_syncBob Peterson
This patch simplifies function need_sync by eliminating a variable in favor of just returning the appropriate value as soon as we know it. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: remove unneeded pg_oflow variableBob Peterson
Function gfs2_write_disk_quota checks if its write overflows onto another page, and if so, does a second write. Before this patch it kept two variables for this, but only one is needed. This patch simplifies it by eliminating pg_oflow. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: remove unneeded variable doneBob Peterson
Function gfs2_write_buf_to_page uses variable done to exit its loop, but it's unnecessary if we just code an infinite loop and exit when we need. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: pass sdp to gfs2_write_buf_to_pageBob Peterson
This patch passes the superblock pointer to gfs2_write_buf_to_page so it becomes more apparent it's dealing with the system quota file. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: pass sdp in to gfs2_write_disk_quotaBob Peterson
Like the previous patch, we now pass the superblock pointer to function gfs2_write_disk_quota. This makes the code more understandable, since it only operates on the quota inode. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Pass sdp to gfs2_adjust_quotaBob Peterson
Before this change function gfs2_adjust_quota's first parameter was an gfs2_inode pointer. But it always pointed to the quota inode. Here we switch that to pass the superblock pointer, sdp, so it is easier to read the code and understand that it's only dealing with the quota inode. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: remove dead code for quota writesBob Peterson
Since patch 845802b112ee function gfs2_write_buf_to_page checks if the target inode is jdata or ordered. This function only operates on the system quota file, which is always jdata, so the check for jdata is useless. This patch removes it. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Introduce new quota=quiet mount optionBob Peterson
This patch adds a new mount option quota=quiet which is the same as quota=on but it suppresses gfs2 quota error messages. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Add device name to gfs2_logd and gfs2_quotadAndreas Gruenbacher
Add the device name to the names of the gfs2_logd and gfs2_quotad kernel threads to allow for easier identification. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Rename "freeze_workqueue" to "gfs2_freeze"Andreas Gruenbacher
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Rename "gfs_recovery" workqueue to "gfs2_recovery"Andreas Gruenbacher
Rename the "gfs_recovery" workqueue to "gfs2_recovery", and gfs_recovery_wq to gfs2_recovery_wq. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Fix withdraw raceAndreas Gruenbacher
Function gfs2_withdraw() tries to synchronize concurrent callers by atomically setting the SDF_WITHDRAWN flag in the first caller, setting the SDF_WITHDRAW_IN_PROG flag to indicate that a withdraw is in progress, performing the actual withdraw, and clearing the SDF_WITHDRAW_IN_PROG flag when done. All other callers wait for the SDF_WITHDRAW_IN_PROG flag to be cleared before returning. This leaves a small window in which callers can find the SDF_WITHDRAWN flag set before the SDF_WITHDRAW_IN_PROG flag has been set, causing them to return prematurely, before the withdraw has been completed. Fix that by setting the SDF_WITHDRAWN and SDF_WITHDRAW_IN_PROG flags atomically. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Sanitize kthread stoppingAndreas Gruenbacher
Immediately stop the logd and quotad kernel threads when a filesystem withdraw is detected: those threads aren't doing anything useful after a withdraw. (Depends on the extra logd and quotad task struct references held since commit 7a109f383fa3 ("gfs2: Fix asynchronous thread destruction").) In addition, check for kthread_should_stop() in the wait condition in gfs2_quotad() to stop immediately when kthread_stop() is called. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Switch to wait_event in gfs2_quotadAndreas Gruenbacher
In gfs2_quotad(), switch from an open-coded wait loop to wait_event_interruptible_timeout(). Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2023-09-05gfs2: Fix asynchronous thread destructionAndreas Gruenbacher
The kernel threads are currently stopped and destroyed synchronously by gfs2_make_fs_ro() and gfs2_put_super(), and asynchronously by signal_our_withdraw(), with no synchronization, so the synchronous and asynchronous contexts can race with each other. First, when creating the kernel threads, take an extra task struct reference so that the task struct won't go away immediately when they terminate. This allows those kthreads to terminate immediately when they're done rather than hanging around as zombies until they are reaped by kthread_stop(). When kthread_stop() is called on a terminated kthread, it will return immediately. Second, in signal_our_withdraw(), once the SDF_JOURNAL_LIVE flag has been cleared, wake up the logd and quotad wait queues instead of stopping the logd and quotad kthreads. The kthreads are then expected to terminate automatically within short time, but if they cannot, they will not block the withdraw. For example, if a user process and one of the kthread decide to withdraw at the same time, only one of them will perform the actual withdraw and the other will wait for it to be done. If the kthread ends up being the one to wait, the withdrawing user process won't be able to stop it. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>