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cifs: Enable large folio support
Now that cifs is using netfslib for its VM interaction, it only sees I/O in terms of iov_iter iterators and does not see pages or folios. This makes large multipage folios transparent to cifs and so we can turn on multipage folios on regular files. Signed-off-by: David Howells <dhowells@redhat.com> cc: Steve French <sfrench@samba.org> cc: Shyam Prasad N <nspmangalore@gmail.com> cc: Rohith Surabattula <rohiths.msft@gmail.com> cc: Jeff Layton <jlayton@kernel.org> cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org
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fs/smb/client/inode.c

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@@ -72,6 +72,7 @@ static void cifs_set_ops(struct inode *inode)
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inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
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else
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inode->i_data.a_ops = &cifs_addr_ops;
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mapping_set_large_folios(inode->i_mapping);
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break;
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case S_IFDIR:
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if (IS_AUTOMOUNT(inode)) {

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