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e5ac9fc753Provide a patch which fixes the bdev interface detection by fixing the -Wuninitialized-const-pointer warning from LLVM 21. Closes: https://bugs.gentoo.org/962778 Signed-off-by: Michal Rostecki <vadorovsky@protonmail.com> Part-of: https://github.com/gentoo/gentoo/pull/43750 Closes: https://github.com/gentoo/gentoo/pull/43750 Signed-off-by: Sam James <sam@gentoo.org>
60 lines
2 KiB
Diff
60 lines
2 KiB
Diff
From 9acedbaceec362d08a33ebfe7c4c7efcee81d094 Mon Sep 17 00:00:00 2001
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From: Brian Behlendorf <behlendorf1@llnl.gov>
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Date: Tue, 2 Sep 2025 09:34:08 -0700
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Subject: [PATCH] config: Fix LLVM-21 -Wuninitialized-const-pointer warning
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LLVM-21 enables -Wuninitialized-const-pointer which results in the
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following compiler warning and the bdev_file_open_by_path() interface
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not being detected for 6.9 and newer kernels. The blk_holder_ops
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are not used by the ZFS code so we can safely use a NULL argument
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for this check.
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bdev_file_open_by_path/bdev_file_open_by_path.c:110:54: error:
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variable 'h' is uninitialized when passed as a const pointer
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argument here [-Werror,-Wuninitialized-const-pointer]
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Reviewed-by: Rob Norris <robn@despairlabs.com>
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Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
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Closes #17682
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Closes #17684
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---
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config/kernel-blkdev.m4 | 9 +++------
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1 file changed, 3 insertions(+), 6 deletions(-)
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diff --git a/config/kernel-blkdev.m4 b/config/kernel-blkdev.m4
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index 83190c6fbe3f..02011bf39fb2 100644
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--- a/config/kernel-blkdev.m4
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+++ b/config/kernel-blkdev.m4
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@@ -29,9 +29,8 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH_4ARG], [
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const char *path = "path";
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fmode_t mode = 0;
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void *holder = NULL;
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- struct blk_holder_ops h;
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- bdev = blkdev_get_by_path(path, mode, holder, &h);
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+ bdev = blkdev_get_by_path(path, mode, holder, NULL);
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])
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])
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@@ -48,9 +47,8 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_OPEN_BY_PATH], [
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const char *path = "path";
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fmode_t mode = 0;
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void *holder = NULL;
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- struct blk_holder_ops h;
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- bdh = bdev_open_by_path(path, mode, holder, &h);
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+ bdh = bdev_open_by_path(path, mode, holder, NULL);
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])
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])
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@@ -68,9 +66,8 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BDEV_FILE_OPEN_BY_PATH], [
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const char *path = "path";
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fmode_t mode = 0;
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void *holder = NULL;
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- struct blk_holder_ops h;
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- file = bdev_file_open_by_path(path, mode, holder, &h);
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+ file = bdev_file_open_by_path(path, mode, holder, NULL);
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])
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])
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