[RFC PATCH v2 1/3] error-injection: Introduce EI_ETYPE_FALSE for fail_function
From: Song Chen <hidden>
Date: 2026-07-24 02:18:03
Also in:
linux-arch, linux-arm-kernel, linux-riscv, linux-s390, lkml, loongarch
Subsystem:
generic include/asm header files, the rest · Maintainers:
Arnd Bergmann, Linus Torvalds
Introduce EI_ETYPE_FALSE for functions which need false as return value in their error-injections, like btrfs_data_csum_ok. EI_ETYPE_NULL can return 0 too but its readability is not good enough. Signed-off-by: Song Chen <redacted> --- include/asm-generic/error-injection.h | 1 + kernel/fail_function.c | 2 ++ 2 files changed, 3 insertions(+)
diff --git a/include/asm-generic/error-injection.h b/include/asm-generic/error-injection.h
index b05253f68eaa..6c399121ab7a 100644
--- a/include/asm-generic/error-injection.h
+++ b/include/asm-generic/error-injection.h@@ -8,6 +8,7 @@ enum { EI_ETYPE_ERRNO, /* Return -ERRNO if failure */ EI_ETYPE_ERRNO_NULL, /* Return -ERRNO or NULL if failure */ EI_ETYPE_TRUE, /* Return true if failure */ + EI_ETYPE_FALSE, /* Return false if failure */ }; struct error_injection_entry {
diff --git a/kernel/fail_function.c b/kernel/fail_function.c
index 2eaf55005f49..90cdad0412cd 100644
--- a/kernel/fail_function.c
+++ b/kernel/fail_function.c@@ -48,6 +48,8 @@ static unsigned long adjust_error_retval(unsigned long addr, unsigned long retv) break; case EI_ETYPE_TRUE: return 1; + case EI_ETYPE_FALSE: + return 0; } return retv;
--
2.43.0