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authorEric Biggers <ebiggers@google.com>2023-01-27 14:25:14 -0800
committerEric Biggers <ebiggers@google.com>2023-01-28 15:10:12 -0800
commit51e4e3153ebc32d3280d5d17418ae6f1a44f1ec1 (patch)
tree55d0a9d3b02a0a403034e6130829e0901e6f93fa /fs/buffer.c
parent5d0f0e57ed900917836385527ce5b122fa1425a3 (diff)
fscrypt: support decrypting data from large folios
Try to make the filesystem-level decryption functions in fs/crypto/ aware of large folios. This includes making fscrypt_decrypt_bio() support the case where the bio contains large folios, and making fscrypt_decrypt_pagecache_blocks() take a folio instead of a page. There's no way to actually test this with large folios yet, but I've tested that this doesn't cause any regressions. Note that this patch just handles *decryption*, not encryption which will be a little more difficult. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Link: https://lore.kernel.org/r/20230127224202.355629-1-ebiggers@kernel.org
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 8499c79ae13d..623e77d6ef77 100644
--- 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(bh->b_page, bh->b_size,
- bh_offset(bh));
+ err = fscrypt_decrypt_pagecache_blocks(page_folio(bh->b_page),
+ bh->b_size, bh_offset(bh));
if (err == 0 && need_fsverity(bh)) {
/*
* We use different work queues for decryption and for verity