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fuse: Check for large folio with SPLICE_F_MOVE

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xfstest generic/074 and generic/075 complain result in kernel
warning messages / page dumps.
This is easily reproducible (on 6.19) with
CONFIG_TRANSPARENT_HUGEPAGE_SHMEM_HUGE_ALWAYS=y
CONFIG_TRANSPARENT_HUGEPAGE_TMPFS_HUGE_ALWAYS=y

This just adds a test for large folios fuse_try_move_folio
with the same page copy fallback, but to avoid the warnings
from fuse_check_folio().

Cc: stable@vger.kernel.org
Signed-off-by: Bernd Schubert <bschubert@ddn.com>
Signed-off-by: Horst Birthelmer <hbirthelmer@ddn.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Bernd Schubert 2026-01-11 12:48:07 +01:00 committed by Miklos Szeredi
parent 129a45f975
commit 59ba47b6be
1 changed files with 3 additions and 0 deletions
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3
fs/fuse/dev.c
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@ -1011,6 +1011,9 @@ static int fuse_try_move_folio(struct fuse_copy_state *cs, struct folio **foliop
folio_clear_uptodate(newfolio);
folio_clear_mappedtodisk(newfolio);
if (folio_test_large(newfolio))
goto out_fallback_unlock;
if (fuse_check_folio(newfolio) != 0)
goto out_fallback_unlock;