From: Chandan Rajendra <chandan@linux.ibm.com>
To: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-fscrypt@vger.kernel.org
Cc: Chandan Rajendra <chandan@linux.ibm.com>,
tytso@mit.edu, adilger.kernel@dilger.ca, ebiggers@kernel.org,
jaegeuk@kernel.org, yuchao0@huawei.com
Subject: [RFC PATCH 10/14] ext4: Decrypt the block that needs to be partially zeroed
Date: Fri, 12 Apr 2019 22:40:37 +0530 [thread overview]
Message-ID: <20190412171041.31995-11-chandan@linux.ibm.com> (raw)
In-Reply-To: <20190412171041.31995-1-chandan@linux.ibm.com>
__ext4_block_zero_page_range decrypts the entire page. This commit
decrypts the block to be partially zeroed instead of the whole page.
Signed-off-by: Chandan Rajendra <chandan@linux.ibm.com>
---
fs/ext4/inode.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 51744a3c3964..ade1816697a8 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4080,9 +4080,10 @@ static int __ext4_block_zero_page_range(handle_t *handle,
if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode)) {
/* We expect the key to be set. */
BUG_ON(!fscrypt_has_encryption_key(inode));
- BUG_ON(blocksize != PAGE_SIZE);
WARN_ON_ONCE(fscrypt_decrypt_page(page->mapping->host,
- page, PAGE_SIZE, 0, page->index));
+ page, blocksize,
+ round_down(offset, blocksize),
+ iblock));
}
}
if (ext4_should_journal_data(inode)) {
--
2.19.1
next prev parent reply other threads:[~2019-04-12 17:11 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-12 17:10 [RFC PATCH 00/14] Consolidate Post read processing code Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 01/14] ext4: Clear BH_Uptodate flag on decryption error Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 02/14] Consolidate "post read processing" into a new file Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 03/14] fsverity: Add call back to decide if verity check has to be performed Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 04/14] fsverity: Add call back to determine readpage limit Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 05/14] fs/mpage.c: Integrate post read processing Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 06/14] ext4: Wire up ext4_readpage[s] to use mpage_readpage[s] Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 07/14] Remove the term "bio" from post read processing Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 08/14] Add decryption support for sub-pagesized blocks Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 09/14] ext4: Decrypt all boundary blocks when doing buffered write Chandan Rajendra
2019-04-12 17:10 ` Chandan Rajendra [this message]
2019-04-12 17:10 ` [RFC PATCH 11/14] fscrypt_encrypt_page: Loop across all blocks mapped by a page range Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 12/14] ext4: Compute logical block and the page range to be encrypted Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 13/14] fscrypt_zeroout_range: Encrypt all zeroed out blocks of a page Chandan Rajendra
2019-04-12 17:10 ` [RFC PATCH 14/14] ext4: Enable encryption for subpage-sized blocks Chandan Rajendra
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