fs/buffer.c: use b_folio for fscrypt work

Use b_folio now that it exists.  This removes an unnecessary call to
compound_head().  No actual change in behavior.

Link: https://lore.kernel.org/r/20230224232503.98372-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>

diff --git a/fs/buffer.c b/fs/buffer.c
index 9e1e2add541e07a593bcc743d73eb05ed51bfbd9..42cb851d06b50986ac3c658eeafbb12cc788dfad 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -331,8 +331,8 @@ static void decrypt_bh(struct work_struct *work)
        struct buffer_head *bh = ctx->bh;
        int err;
 
-       err = fscrypt_decrypt_pagecache_blocks(page_folio(bh->b_page),
-                                              bh->b_size, bh_offset(bh));
+       err = fscrypt_decrypt_pagecache_blocks(bh->b_folio, bh->b_size,
+                                              bh_offset(bh));
        if (err == 0 && need_fsverity(bh)) {
                /*
                 * We use different work queues for decryption and for verity