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/accessibility/speakup/Makefile | 60 ++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 drivers/accessibility/speakup/Makefile (limited to 'drivers/accessibility/speakup/Makefile') diff --git a/drivers/accessibility/speakup/Makefile b/drivers/accessibility/speakup/Makefile new file mode 100644 index 000000000..14ba1cca8 --- /dev/null +++ b/drivers/accessibility/speakup/Makefile @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_SPEAKUP_SYNTH_ACNTSA) += speakup_acntsa.o +obj-$(CONFIG_SPEAKUP_SYNTH_ACNTPC) += speakup_acntpc.o +obj-$(CONFIG_SPEAKUP_SYNTH_APOLLO) += speakup_apollo.o +obj-$(CONFIG_SPEAKUP_SYNTH_AUDPTR) += speakup_audptr.o +obj-$(CONFIG_SPEAKUP_SYNTH_BNS) += speakup_bns.o +obj-$(CONFIG_SPEAKUP_SYNTH_DECTLK) += speakup_dectlk.o +obj-$(CONFIG_SPEAKUP_SYNTH_DECEXT) += speakup_decext.o +obj-$(CONFIG_SPEAKUP_SYNTH_DECPC) += speakup_decpc.o +obj-$(CONFIG_SPEAKUP_SYNTH_DTLK) += speakup_dtlk.o +obj-$(CONFIG_SPEAKUP_SYNTH_KEYPC) += speakup_keypc.o +obj-$(CONFIG_SPEAKUP_SYNTH_LTLK) += speakup_ltlk.o +obj-$(CONFIG_SPEAKUP_SYNTH_SOFT) += speakup_soft.o +obj-$(CONFIG_SPEAKUP_SYNTH_SPKOUT) += speakup_spkout.o +obj-$(CONFIG_SPEAKUP_SYNTH_TXPRT) += speakup_txprt.o +obj-$(CONFIG_SPEAKUP_SYNTH_DUMMY) += speakup_dummy.o + +obj-$(CONFIG_SPEAKUP) += speakup.o +speakup-y := \ + buffers.o \ + devsynth.o \ + i18n.o \ + fakekey.o \ + main.o \ + keyhelp.o \ + kobjects.o \ + selection.o \ + spk_ttyio.o \ + synth.o \ + thread.o \ + varhandlers.o +speakup-$(CONFIG_SPEAKUP_SERIALIO) += serialio.o + + +clean-files := mapdata.h speakupmap.h + + +# Generate mapdata.h from headers +hostprogs += makemapdata +makemapdata-objs := makemapdata.o + +quiet_cmd_mkmap = MKMAP $@ + cmd_mkmap = TOPDIR=$(srctree) SPKDIR=$(src) $(obj)/makemapdata > $@ + +$(obj)/mapdata.h: $(obj)/makemapdata + $(call cmd,mkmap) + + +# Generate speakupmap.h from mapdata.h +hostprogs += genmap +genmap-objs := genmap.o +$(obj)/genmap.o: $(obj)/mapdata.h + +quiet_cmd_genmap = GENMAP $@ + cmd_genmap = $(obj)/genmap $< > $@ + +$(obj)/speakupmap.h: $(src)/speakupmap.map $(obj)/genmap + $(call cmd,genmap) + +$(obj)/main.o: $(obj)/speakupmap.h -- cgit v1.3.1