[PATCH v2 1/4] um: Make host_task_size a local variable

[Tiwei Bie <tiwei.bie@linux.dev>]

From: Tiwei Bie <tiwei.btw@antgroup.com>

Currently, host_task_size is a global variable, but it is only used
in linux_main() to compute stub_start and task_size. Make it a local
variable to limit its scope to where it is actually needed.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
---
 arch/um/include/shared/as-layout.h | 1 -
 arch/um/kernel/um_arch.c           | 3 +--
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h
index 7c7e17bce403..02ef258e3395 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -44,7 +44,6 @@ extern unsigned long start_vm;
 
 extern unsigned long brk_start;
 
-extern unsigned long host_task_size;
 extern unsigned long stub_start;
 
 extern int linux_main(int argc, char **argv, char **envp);
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index cfbbbf8500c3..5b982031e5ae 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -254,8 +254,6 @@ unsigned long stub_start;
 unsigned long task_size;
 EXPORT_SYMBOL(task_size);
 
-unsigned long host_task_size;
-
 unsigned long brk_start;
 unsigned long end_iomem;
 EXPORT_SYMBOL(end_iomem);
@@ -308,6 +306,7 @@ int __init linux_main(int argc, char **argv, char **envp)
 {
 	unsigned long avail, diff;
 	unsigned long virtmem_size, max_physmem;
+	unsigned long host_task_size;
 	unsigned long stack;
 	unsigned int i;
 	int add;
-- 
2.34.1