mempolicy: clean up minor dead code in queue_pages_test_walk()

Commit 2cafb582173f ("mempolicy: remove confusing MPOL_MF_LAZY dead code")
removes MPOL_MF_LAZY handling in queue_pages_test_walk(), and with that,
there is no effective use of the local variable endvma in that function
remaining.

Remove the local variable endvma and its dead code. No functional change.

This issue was identified with clang-analyzer's dead stores analysis.

Link: https://lkml.kernel.org/r/20240122092504.18377-1-lukas.bulwahn@gmail.com
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 10a590ee1c89974c353a28aa0c4eb393a375e31b..5e519163c4dcb6873dd1ce184401bb30eca12f4b 100644 (file)
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -654,7 +654,6 @@ static int queue_pages_test_walk(unsigned long start, unsigned long end,
 {
        struct vm_area_struct *next, *vma = walk->vma;
        struct queue_pages *qp = walk->private;
-       unsigned long endvma = vma->vm_end;
        unsigned long flags = qp->flags;
 
        /* range check first */
@@ -682,9 +681,6 @@ static int queue_pages_test_walk(unsigned long start, unsigned long end,
            !(flags & MPOL_MF_STRICT))
                return 1;
 
-       if (endvma > end)
-               endvma = end;
-
        /*
         * Check page nodes, and queue pages to move, in the current vma.
         * But if no moving, and no strict checking, the scan can be skipped.