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/Lindent | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100755 scripts/Lindent (limited to 'scripts/Lindent') diff --git a/scripts/Lindent b/scripts/Lindent new file mode 100755 index 000000000..1688c44c2 --- /dev/null +++ b/scripts/Lindent @@ -0,0 +1,26 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +PARAM="-npro -kr -i8 -ts8 -sob -l80 -ss -ncs -cp1" + +RES=`indent --version | cut -d' ' -f3` +if [ "$RES" = "" ]; then + exit 1 +fi +V1=`echo $RES | cut -d'.' -f1` +V2=`echo $RES | cut -d'.' -f2` +V3=`echo $RES | cut -d'.' -f3` + +if [ $V1 -gt 2 ]; then + PARAM="$PARAM -il0" +elif [ $V1 -eq 2 ]; then + if [ $V2 -gt 2 ]; then + PARAM="$PARAM -il0" + elif [ $V2 -eq 2 ]; then + if [ $V3 -ge 10 ]; then + PARAM="$PARAM -il0" + fi + fi +fi + +indent $PARAM "$@" -- cgit v1.3.1