From dd05add7b2b6004c5fa3a1f276f56d8668f86b65 Mon Sep 17 00:00:00 2001 From: Paulo Alcantara Date: Sat, 26 Sep 2026 19:20:30 -0300 Subject: netfs: zero the tail of a short DIO/unbuffered read The buffered read collector zero-fills the tail of a short read that stops below the inode's i_size (netfs_clear_unread()), so a read that races an extending write still returns the expected number of bytes. The non-buffered collector path does no such thing: it just records how much was transferred. Add the same zero-fill for the non-buffered case, gated on NETFS_SREQ_CLEAR_TAIL: a subreq's source sets that flag when a short result from it is known to be safe to treat as a hole, as opposed to NETFS_SREQ_HIT_EOF, which means the read genuinely ran off the end of the file and should be reported short as-is. Only CLEAR_TAIL should zero-fill here; a real EOF must stay a real short read. No source currently sets CLEAR_TAIL on an unbuffered/DIO subrequest, so this is inert on its own -- a following change teaches cifs to set it in the one case that needs it. Fixes: e2d46f2ec332 ("netfs: Change the read result collector to only use one work item") Reviewed-by: David Howells Reviewed-by: Namjae Jeon Signed-off-by: Paulo Alcantara Cc: Christian Brauner Cc: Matthew Wilcox Cc: Ronnie Sahlberg Cc: Shyam Prasad N Cc: Tom Talpey Cc: Bharath SM Cc: stable@vger.kernel.org --- scripts/const_structs.checkpatch | 113 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 scripts/const_structs.checkpatch (limited to 'scripts/const_structs.checkpatch') diff --git a/scripts/const_structs.checkpatch b/scripts/const_structs.checkpatch new file mode 100644 index 000000000..6eb94fddc --- /dev/null +++ b/scripts/const_structs.checkpatch @@ -0,0 +1,113 @@ +acpi_dock_ops +address_space_operations +backlight_ops +bin_attribute +block_device_operations +bus_type +clk_ops +comedi_lrange +component_ops +ctl_table +dentry_operations +dev_pm_ops +device_type +dma_map_ops +driver_info +drm_connector_funcs +drm_encoder_funcs +drm_encoder_helper_funcs +dvb_frontend_ops +dvb_tuner_ops +ethtool_ops +extent_io_ops +fb_ops +file_lock_operations +file_operations +hv_ops +hwmon_ops +ib_device_ops +ide_dma_ops +ide_port_ops +ieee80211_ops +iio_buffer_setup_ops +inode_operations +intel_dvo_dev_ops +irq_domain_ops +item_operations +iwl_cfg +iwl_ops +kernel_param_ops +kgdb_arch +kgdb_io +kobj_type +kset_uevent_ops +lcd_ops +lock_manager_operations +machine_desc +microcode_ops +mlxsw_reg_info +mtd_ooblayout_ops +mtrr_ops +nand_controller_ops +neigh_ops +net_device_ops +nft_expr_ops +nlmsvc_binding +nvkm_device_chip +of_device_id +pci_raw_ops +phy_ops +pinconf_ops +pinctrl_ops +pinmux_ops +pipe_buf_operations +platform_hibernation_ops +platform_suspend_ops +proc_ops +proto_ops +pwm_ops +reg_default +reg_field +reg_sequence +regmap_access_table +regmap_bus +regmap_config +regmap_irq +regmap_irq_chip +regmap_irq_sub_irq_map +regmap_range +regmap_range_cfg +regulator_ops +reset_control_ops +rpc_pipe_ops +rtc_class_ops +sd_desc +sdhci_ops +seq_operations +sirfsoc_padmux +snd_ac97_build_ops +snd_pcm_ops +snd_rawmidi_ops +snd_soc_component_driver +snd_soc_dai_ops +snd_soc_ops +snd_soc_tplg_ops +soc_pcmcia_socket_ops +stacktrace_ops +sysfs_ops +tty_operations +uart_ops +usb_mon_operations +v4l2_ctrl_ops +v4l2_ioctl_ops +v4l2_subdev_core_ops +v4l2_subdev_internal_ops +v4l2_subdev_ops +v4l2_subdev_pad_ops +v4l2_subdev_video_ops +vb2_ops +vm_operations_struct +wacom_features +watchdog_ops +wd_ops +xattr_handler -- cgit v1.3.1