File 0031-LU-14073-ptlrpc-remove-debugging-assert-using-segmen.patch of Package lustre_2_12

From 4dfa2fa3587fe2dee1f85a3157263de63913fd80 Mon Sep 17 00:00:00 2001
From: Aurelien Degremont <degremoa@amazon.com>
Date: Fri, 13 Nov 2020 16:17:37 +0000
Subject: [PATCH 31/35] LU-14073 ptlrpc: remove debugging assert using
 segment_eq()

In Linux 5.9-rc1 commit 428e2976a5, segment_eq() is removed as it was
only used in uaccess_kernel(). But uaccess_kernel() was introduced in Linux
v4.12-rc1, which does not cover all supported kernel versions.

As segment_eq() is only used in 1 actual debugging call, avoid adding a
new configuration test for uaccess_kernel() and just remove the 2
related LASSERTs.

Test-Parameters: trivial
Signed-off-by: Aurelien Degremont <degremoa@amazon.com>
Change-Id: I1595e9b085176d2106a2b958e1fd6f4031cc2f69
Reviewed-on: https://review.whamcloud.com/40797
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Neil Brown <neilb@suse.de>
---
 lustre/ptlrpc/sec_ctx.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/lustre/ptlrpc/sec_ctx.c b/lustre/ptlrpc/sec_ctx.c
index 0b3422be584f..dc9f38c7036b 100644
--- a/lustre/ptlrpc/sec_ctx.c
+++ b/lustre/ptlrpc/sec_ctx.c
@@ -37,13 +37,8 @@
 /* Debugging check only needed during development */
 #ifdef OBD_CTXT_DEBUG
 # define ASSERT_CTXT_MAGIC(magic) LASSERT((magic) == OBD_RUN_CTXT_MAGIC)
-# define ASSERT_NOT_KERNEL_CTXT(msg) LASSERTF(!segment_eq(get_fs(), get_ds()),\
-					      msg)
-# define ASSERT_KERNEL_CTXT(msg) LASSERTF(segment_eq(get_fs(), get_ds()), msg)
 #else
 # define ASSERT_CTXT_MAGIC(magic) do {} while(0)
-# define ASSERT_NOT_KERNEL_CTXT(msg) do {} while(0)
-# define ASSERT_KERNEL_CTXT(msg) do {} while(0)
 #endif
 
 /* push / pop to root of obd store */
@@ -53,7 +48,6 @@ void push_ctxt(struct lvfs_run_ctxt *save, struct lvfs_run_ctxt *new_ctx)
 	if (new_ctx->dt != NULL)
 		return;
 
-	//ASSERT_NOT_KERNEL_CTXT("already in kernel context!\n");
 	ASSERT_CTXT_MAGIC(new_ctx->magic);
 	OBD_SET_CTXT_MAGIC(save);
 
@@ -80,7 +74,6 @@ void pop_ctxt(struct lvfs_run_ctxt *saved, struct lvfs_run_ctxt *new_ctx)
 		return;
 
 	ASSERT_CTXT_MAGIC(saved->magic);
-	ASSERT_KERNEL_CTXT("popping non-kernel context!\n");
 
 	LASSERTF(current->fs->pwd.dentry == new_ctx->pwd, "%p != %p\n",
 		 current->fs->pwd.dentry, new_ctx->pwd);
-- 
2.41.0