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authorSidhartha Kumar <sidhartha.kumar@oracle.com>2023-12-04 10:32:34 -0800
committerAndrew Morton <akpm@linux-foundation.org>2023-12-06 16:12:49 -0800
commit4a3ef6be03e6700037fc20e63aa5ffd972e435ca (patch)
treecfbda3a395f9a773fd717fadafc1df009bdba4c1
parent801a2b1b49f4dcf06703130922806e9c639c2ca8 (diff)
downloadlwn-4a3ef6be03e6700037fc20e63aa5ffd972e435ca.tar.gz
lwn-4a3ef6be03e6700037fc20e63aa5ffd972e435ca.zip
mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
After commit a08c7193e4f1 "mm/filemap: remove hugetlb special casing in filemap.c", hugetlb pages are stored in the page cache in base page sized indexes. This leads to multi index stores in the xarray which is only supporting through CONFIG_XARRAY_MULTI. The other page cache user of multi index stores ,THP, selects XARRAY_MULTI. Have CONFIG_HUGETLB_PAGE follow this behavior as well to avoid the BUG() with a CONFIG_HUGETLB_PAGE && !CONFIG_XARRAY_MULTI config. Link: https://lkml.kernel.org/r/20231204183234.348697-1-sidhartha.kumar@oracle.com Fixes: a08c7193e4f1 ("mm/filemap: remove hugetlb special casing in filemap.c") Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reported-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r--fs/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index fd1f655b4f1f..42837617a55b 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -268,6 +268,7 @@ config HUGETLBFS
config HUGETLB_PAGE
def_bool HUGETLBFS
+ select XARRAY_MULTI
config HUGETLB_PAGE_OPTIMIZE_VMEMMAP
def_bool HUGETLB_PAGE