[PATCH 1/9] fscrypt: pass a real sector_t to fscrypt_zeroout_range_inline_crypt
From: Christoph Hellwig <hch@lst.de>
Date: 2025-12-17 06:07:50
Also in:
linux-fscrypt, linux-fsdevel
Subsystem:
filesystems (vfs and infrastructure), fscrypt: file system level encryption support, the rest · Maintainers:
Alexander Viro, Christian Brauner, Eric Biggers, Theodore Y. Ts'o, Jaegeuk Kim, Linus Torvalds
While the pblk argument to fscrypt_zeroout_range_inline_crypt is declared as a sector_t it actually is interpreted as a logical block size unit, which is highly unusual. Switch to passing the 512 byte units that sector_t is defined for. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Biggers <ebiggers@kernel.org> --- fs/crypto/bio.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/crypto/bio.c b/fs/crypto/bio.c
index 5f5599020e94..68b0424d879a 100644
--- a/fs/crypto/bio.c
+++ b/fs/crypto/bio.c@@ -48,7 +48,7 @@ bool fscrypt_decrypt_bio(struct bio *bio) EXPORT_SYMBOL(fscrypt_decrypt_bio); static int fscrypt_zeroout_range_inline_crypt(const struct inode *inode, - pgoff_t lblk, sector_t pblk, + pgoff_t lblk, sector_t sector, unsigned int len) { const unsigned int blockbits = inode->i_blkbits;
@@ -67,8 +67,7 @@ static int fscrypt_zeroout_range_inline_crypt(const struct inode *inode, if (num_pages == 0) { fscrypt_set_bio_crypt_ctx(bio, inode, lblk, GFP_NOFS); - bio->bi_iter.bi_sector = - pblk << (blockbits - SECTOR_SHIFT); + bio->bi_iter.bi_sector = sector; } ret = bio_add_page(bio, ZERO_PAGE(0), bytes_this_page, 0); if (WARN_ON_ONCE(ret != bytes_this_page)) {
@@ -78,7 +77,7 @@ static int fscrypt_zeroout_range_inline_crypt(const struct inode *inode, num_pages++; len -= blocks_this_page; lblk += blocks_this_page; - pblk += blocks_this_page; + sector += (bytes_this_page >> SECTOR_SHIFT); if (num_pages == BIO_MAX_VECS || !len || !fscrypt_mergeable_bio(bio, inode, lblk)) { err = submit_bio_wait(bio);
@@ -132,7 +131,7 @@ int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk, return 0; if (fscrypt_inode_uses_inline_crypto(inode)) - return fscrypt_zeroout_range_inline_crypt(inode, lblk, pblk, + return fscrypt_zeroout_range_inline_crypt(inode, lblk, sector, len); BUILD_BUG_ON(ARRAY_SIZE(pages) > BIO_MAX_VECS);
--
2.47.3