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, hch@infradead.org
Subject: [PATCH V2 09/13] ext4: Decrypt the block that needs to be partially zeroed
Date: Sun, 28 Apr 2019 10:01:17 +0530 [thread overview]
Message-ID: <20190428043121.30925-10-chandan@linux.ibm.com> (raw)
In-Reply-To: <20190428043121.30925-1-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:[~2019-04-28 4:31 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-28 4:31 [PATCH V2 00/13] Consolidate FS read I/O callbacks code Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 01/13] ext4: Clear BH_Uptodate flag on decryption error Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 02/13] Consolidate "read callbacks" into a new file Chandan Rajendra
2019-04-30 0:00 ` Eric Biggers
2019-05-01 12:30 ` Chandan Rajendra
2019-04-30 1:37 ` Chao Yu
2019-05-01 12:31 ` Chandan Rajendra
2019-04-30 18:05 ` Eric Biggers
2019-05-01 12:32 ` Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 03/13] fsverity: Add call back to decide if verity check has to be performed Chandan Rajendra
2019-04-30 21:10 ` Jeremy Sowden
2019-05-01 12:33 ` Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 04/13] fsverity: Add call back to determine readpage limit Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 05/13] fs/mpage.c: Integrate read callbacks Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 06/13] ext4: Wire up ext4_readpage[s] to use mpage_readpage[s] Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 07/13] Add decryption support for sub-pagesized blocks Chandan Rajendra
2019-04-30 0:38 ` Eric Biggers
2019-05-01 13:40 ` Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 08/13] ext4: Decrypt all boundary blocks when doing buffered write Chandan Rajendra
2019-04-28 4:31 ` Chandan Rajendra [this message]
2019-04-28 4:31 ` [PATCH V2 10/13] fscrypt_encrypt_page: Loop across all blocks mapped by a page range Chandan Rajendra
2019-04-30 17:11 ` Eric Biggers
2019-04-30 23:08 ` [f2fs-dev] " Eric Biggers
2019-05-01 14:49 ` Chandan Rajendra
2019-05-01 22:29 ` Eric Biggers
2019-05-02 5:52 ` Chandan Rajendra
2019-05-02 18:16 ` Eric Biggers
2019-04-28 4:31 ` [PATCH V2 11/13] ext4: Compute logical block and the page range to be encrypted Chandan Rajendra
2019-04-30 17:01 ` Eric Biggers
2019-05-01 14:11 ` Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 12/13] fscrypt_zeroout_range: Encrypt all zeroed out blocks of a page Chandan Rajendra
2019-04-30 16:51 ` Eric Biggers
2019-05-01 14:22 ` Chandan Rajendra
2019-04-28 4:31 ` [PATCH V2 13/13] ext4: Enable encryption for subpage-sized blocks Chandan Rajendra
2019-04-30 0:27 ` [PATCH V2 00/13] Consolidate FS read I/O callbacks code Matthew Wilcox
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190428043121.30925-10-chandan@linux.ibm.com \
--to=chandan@linux.ibm.com \
--cc=adilger.kernel@dilger.ca \
--cc=ebiggers@kernel.org \
--cc=hch@infradead.org \
--cc=jaegeuk@kernel.org \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-f2fs-devel@lists.sourceforge.net \
--cc=linux-fscrypt@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=tytso@mit.edu \
--cc=yuchao0@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).