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 --- drivers/usb/dwc2/Makefile | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 drivers/usb/dwc2/Makefile (limited to 'drivers/usb/dwc2/Makefile') diff --git a/drivers/usb/dwc2/Makefile b/drivers/usb/dwc2/Makefile new file mode 100644 index 000000000..2bcd6945d --- /dev/null +++ b/drivers/usb/dwc2/Makefile @@ -0,0 +1,29 @@ +# SPDX-License-Identifier: GPL-2.0 +ccflags-$(CONFIG_USB_DWC2_DEBUG) += -DDEBUG +ccflags-$(CONFIG_USB_DWC2_VERBOSE) += -DVERBOSE_DEBUG + +obj-$(CONFIG_USB_DWC2) += dwc2.o +dwc2-y := core.o core_intr.o platform.o drd.o +dwc2-y += params.o + +ifneq ($(filter y,$(CONFIG_USB_DWC2_HOST) $(CONFIG_USB_DWC2_DUAL_ROLE)),) + dwc2-y += hcd.o hcd_intr.o + dwc2-y += hcd_queue.o hcd_ddma.o +endif + +ifneq ($(filter y,$(CONFIG_USB_DWC2_PERIPHERAL) $(CONFIG_USB_DWC2_DUAL_ROLE)),) + dwc2-y += gadget.o +endif + +ifneq ($(CONFIG_DEBUG_FS),) + dwc2-y += debugfs.o +endif + +# NOTE: The previous s3c-hsotg peripheral mode only driver has been moved to +# this location and renamed gadget.c. When building for dynamically linked +# modules, dwc2.ko will get built for host mode, peripheral mode, and dual-role +# mode. The PCI bus interface module will called dwc2_pci.ko and the platform +# interface module will be called dwc2_platform.ko. + +obj-$(CONFIG_USB_DWC2_PCI) += dwc2_pci.o +dwc2_pci-y := pci.o -- cgit v1.3.1