From: Eric Biggers <ebiggers@google.com>
Date: Wed, 2 Apr 2025 03:26:48 +0000 (-0700)
Subject: bcachefs: add missing selection of XARRAY_MULTI
X-Git-Tag: v6.15-rc1~31^2~7
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a07c43e6c2ff4cbdba7abf8d533b2faf19fa2287;p=thirdparty%2Flinux.git

bcachefs: add missing selection of XARRAY_MULTI

When CONFIG_XARRAY_MULTI is not set, reading from a bcachefs file hits
the 'BUG_ON(order > 0);' in xas_set_order(), because it tries to insert
a large folio in the page cache.  Fix this by making bcachefs select
XARRAY_MULTI.

Fixes: be212d86b19c ("bcachefs: bs > ps support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/Kconfig b/fs/bcachefs/Kconfig
index c9798750202d3..bf1c94e51dd06 100644
--- a/fs/bcachefs/Kconfig
+++ b/fs/bcachefs/Kconfig
@@ -26,6 +26,7 @@ config BCACHEFS_FS
 	select SRCU
 	select SYMBOLIC_ERRNAME
 	select MIN_HEAP
+	select XARRAY_MULTI
 	help
 	The bcachefs filesystem - a modern, copy on write filesystem, with
 	support for multiple devices, compression, checksumming, etc.