The patch titled
Subject: mm: vrealloc: fix missing nommu implementation
has been added to the -mm mm-unstable branch. Its filename is
mm-vmalloc-implement-vrealloc-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmalloc-implement-vrealloc-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Danilo Krummrich <dakr@xxxxxxxxxx>
Subject: mm: vrealloc: fix missing nommu implementation
Date: Thu, 25 Jul 2024 16:11:59 +0200
Commit 5ec6d992f460 ("mm: vmalloc: implement vrealloc()") introduces
vrealloc(), but lacks the implementation of the nommu version of this
function.
Note that currently nommu isn't actually broken without this. The only
user, kvrealloc(), never actually calls into vrealloc() with nommu, since
it's guarded by is_vmalloc_addr(), which for nommu always returns false.
However, since this becomes a real issue once vrealloc() is used by other
code, fix this.
Link: https://lkml.kernel.org/r/20240725141227.13954-1-dakr@xxxxxxxxxx
Fixes: 5ec6d992f460 ("mm: vmalloc: implement vrealloc()")
Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/nommu.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/mm/nommu.c~mm-vmalloc-implement-vrealloc-fix
+++ a/mm/nommu.c
@@ -126,6 +126,11 @@ void *__vmalloc_noprof(unsigned long siz
}
EXPORT_SYMBOL(__vmalloc_noprof);
+void *vrealloc_noprof(const void *p, size_t size, gfp_t flags)
+{
+ return krealloc_noprof(p, size, (flags | __GFP_COMP) & ~__GFP_HIGHMEM);
+}
+
void *__vmalloc_node_range_noprof(unsigned long size, unsigned long align,
unsigned long start, unsigned long end, gfp_t gfp_mask,
pgprot_t prot, unsigned long vm_flags, int node,
_
Patches currently in -mm which might be from dakr@xxxxxxxxxx are
mm-vmalloc-implement-vrealloc.patch
mm-vmalloc-implement-vrealloc-fix.patch
mm-kvmalloc-align-kvrealloc-with-krealloc.patch
