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Revert "9p: Enable multipage folios"

This reverts commit 1325e4a91a405f88f1b18626904d37860a4f9069.

using multipage folios apparently break some madvise operations like
MADV_PAGEOUT which do not reliably unload the specified page anymore,

Revert the patch until that is figured out.

Reported-by: Andrii Nakryiko <andrii@kernel.org>
Fixes: 1325e4a91a40 ("9p: Enable multipage folios")
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

authored by

Dominique Martinet and committed by
Linus Torvalds f009e946 c2ee9f59

-1
-1
fs/9p/vfs_inode.c
··· 295 295 inode->i_op = &v9fs_file_inode_operations; 296 296 inode->i_fop = &v9fs_file_operations; 297 297 } 298 - mapping_set_large_folios(inode->i_mapping); 299 298 300 299 break; 301 300 case S_IFLNK: