All of lore.kernel.org
 help / color / mirror / Atom feed
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 V2 10/14] ext4: Decrypt the block that needs to be partially zeroed
Date: Sun, 14 Apr 2019 17:08:00 +0530	[thread overview]
Message-ID: <20190414113804.26769-11-chandan@linux.ibm.com> (raw)
In-Reply-To: <20190414113804.26769-1-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

WARNING: multiple messages have this Message-ID (diff)
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: tytso@mit.edu, ebiggers@kernel.org,
	Chandan Rajendra <chandan@linux.ibm.com>,
	adilger.kernel@dilger.ca, jaegeuk@kernel.org
Subject: [RFC PATCH V2 10/14] ext4: Decrypt the block that needs to be partially zeroed
Date: Sun, 14 Apr 2019 17:08:00 +0530	[thread overview]
Message-ID: <20190414113804.26769-11-chandan@linux.ibm.com> (raw)
In-Reply-To: <20190414113804.26769-1-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

  parent reply	other threads:[~2019-04-14 11:38 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-14 11:37 [RFC PATCH V2 00/14] Consolidate Post read processing code Chandan Rajendra
2019-04-14 11:37 ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 01/14] ext4: Clear BH_Uptodate flag on decryption error Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 02/14] Consolidate "post read processing" into a new file Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 03/14] fsverity: Add call back to decide if verity check has to be performed Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 04/14] fsverity: Add call back to determine readpage limit Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 05/14] fs/mpage.c: Integrate post read processing Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 06/14] ext4: Wire up ext4_readpage[s] to use mpage_readpage[s] Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 07/14] Remove the term "bio" from post read processing Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 08/14] Add decryption support for sub-pagesized blocks Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:37 ` [RFC PATCH V2 09/14] ext4: Decrypt all boundary blocks when doing buffered write Chandan Rajendra
2019-04-14 11:37   ` Chandan Rajendra
2019-04-14 11:38 ` Chandan Rajendra [this message]
2019-04-14 11:38   ` [RFC PATCH V2 10/14] ext4: Decrypt the block that needs to be partially zeroed Chandan Rajendra
2019-04-14 11:38 ` [RFC PATCH V2 11/14] fscrypt_encrypt_page: Loop across all blocks mapped by a page range Chandan Rajendra
2019-04-14 11:38   ` Chandan Rajendra
2019-04-14 11:38 ` [RFC PATCH V2 12/14] ext4: Compute logical block and the page range to be encrypted Chandan Rajendra
2019-04-14 11:38   ` Chandan Rajendra
2019-04-14 11:38 ` [RFC PATCH V2 13/14] fscrypt_zeroout_range: Encrypt all zeroed out blocks of a page Chandan Rajendra
2019-04-14 11:38   ` Chandan Rajendra
2019-04-14 11:38 ` [RFC PATCH V2 14/14] ext4: Enable encryption for subpage-sized blocks Chandan Rajendra
2019-04-14 11:38   ` Chandan Rajendra

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=20190414113804.26769-11-chandan@linux.ibm.com \
    --to=chandan@linux.ibm.com \
    --cc=adilger.kernel@dilger.ca \
    --cc=ebiggers@kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.