From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org, linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH v2 13/14] ext4: decrypt only the needed block in __ext4_block_zero_page_range()
Date: Mon, 20 May 2019 09:29:51 -0700 [thread overview]
Message-ID: <20190520162952.156212-14-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Chandan Rajendra <chandan@linux.ibm.com>
In __ext4_block_zero_page_range(), only decrypt the block that actually
needs to be decrypted, rather than assuming blocksize == PAGE_SIZE and
decrypting the whole page.
This is in preparation for allowing encryption on ext4 filesystems with
blocksize != PAGE_SIZE.
Signed-off-by: Chandan Rajendra <chandan@linux.ibm.com>
(EB: rebase onto previous changes, improve the commit message, and use
bh_offset())
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/ext4/inode.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8b3ea9c8ac988..77c43c50e4580 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4075,9 +4075,8 @@ 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_pagecache_blocks(
- page, PAGE_SIZE, 0));
+ page, blocksize, bh_offset(bh)));
}
}
if (ext4_should_journal_data(inode)) {
--
2.21.0.1020.gf2820cf01a-goog
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>
Subject: [PATCH v2 13/14] ext4: decrypt only the needed block in __ext4_block_zero_page_range()
Date: Mon, 20 May 2019 09:29:51 -0700 [thread overview]
Message-ID: <20190520162952.156212-14-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Chandan Rajendra <chandan@linux.ibm.com>
In __ext4_block_zero_page_range(), only decrypt the block that actually
needs to be decrypted, rather than assuming blocksize == PAGE_SIZE and
decrypting the whole page.
This is in preparation for allowing encryption on ext4 filesystems with
blocksize != PAGE_SIZE.
Signed-off-by: Chandan Rajendra <chandan@linux.ibm.com>
(EB: rebase onto previous changes, improve the commit message, and use
bh_offset())
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/ext4/inode.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8b3ea9c8ac988..77c43c50e4580 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4075,9 +4075,8 @@ 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_pagecache_blocks(
- page, PAGE_SIZE, 0));
+ page, blocksize, bh_offset(bh)));
}
}
if (ext4_should_journal_data(inode)) {
--
2.21.0.1020.gf2820cf01a-goog
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org, linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [PATCH v2 13/14] ext4: decrypt only the needed block in __ext4_block_zero_page_range()
Date: Mon, 20 May 2019 09:29:51 -0700 [thread overview]
Message-ID: <20190520162952.156212-14-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Chandan Rajendra <chandan@linux.ibm.com>
In __ext4_block_zero_page_range(), only decrypt the block that actually
needs to be decrypted, rather than assuming blocksize == PAGE_SIZE and
decrypting the whole page.
This is in preparation for allowing encryption on ext4 filesystems with
blocksize != PAGE_SIZE.
Signed-off-by: Chandan Rajendra <chandan@linux.ibm.com>
(EB: rebase onto previous changes, improve the commit message, and use
bh_offset())
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/ext4/inode.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8b3ea9c8ac988..77c43c50e4580 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4075,9 +4075,8 @@ 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_pagecache_blocks(
- page, PAGE_SIZE, 0));
+ page, blocksize, bh_offset(bh)));
}
}
if (ext4_should_journal_data(inode)) {
--
2.21.0.1020.gf2820cf01a-goog
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org, linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [PATCH v2 13/14] ext4: decrypt only the needed block in __ext4_block_zero_page_range()
Date: Mon, 20 May 2019 09:29:51 -0700 [thread overview]
Message-ID: <20190520162952.156212-14-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Chandan Rajendra <chandan@linux.ibm.com>
In __ext4_block_zero_page_range(), only decrypt the block that actually
needs to be decrypted, rather than assuming blocksize == PAGE_SIZE and
decrypting the whole page.
This is in preparation for allowing encryption on ext4 filesystems with
blocksize != PAGE_SIZE.
Signed-off-by: Chandan Rajendra <chandan@linux.ibm.com>
(EB: rebase onto previous changes, improve the commit message, and use
bh_offset())
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/ext4/inode.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8b3ea9c8ac988..77c43c50e4580 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4075,9 +4075,8 @@ 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_pagecache_blocks(
- page, PAGE_SIZE, 0));
+ page, blocksize, bh_offset(bh)));
}
}
if (ext4_should_journal_data(inode)) {
--
2.21.0.1020.gf2820cf01a-goog
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2019-05-20 16:29 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 16:29 [f2fs-dev] [PATCH v2 00/14] fscrypt, ext4: prepare for blocksize != PAGE_SIZE Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 01/14] fscrypt: simplify bounce page handling Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 02/14] fscrypt: remove the "write" part of struct fscrypt_ctx Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 03/14] fscrypt: rename fscrypt_do_page_crypto() to fscrypt_crypt_block() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 04/14] fscrypt: clean up some BUG_ON()s in block encryption/decryption Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 05/14] fscrypt: introduce fscrypt_encrypt_block_inplace() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 06/14] fscrypt: support encrypting multiple filesystem blocks per page Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 07/14] fscrypt: handle blocksize < PAGE_SIZE in fscrypt_zeroout_range() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 08/14] fscrypt: introduce fscrypt_decrypt_block_inplace() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 09/14] fscrypt: support decrypting multiple filesystem blocks per page Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 10/14] fscrypt: decrypt only the needed blocks in __fscrypt_decrypt_bio() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 11/14] ext4: clear BH_Uptodate flag on decryption error Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 12/14] ext4: decrypt only the needed blocks in ext4_block_write_begin() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers [this message]
2019-05-20 16:29 ` [PATCH v2 13/14] ext4: decrypt only the needed block in __ext4_block_zero_page_range() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 14/14] ext4: encrypt only up to last block in ext4_bio_write_page() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-29 20:47 ` [f2fs-dev] [PATCH v2 00/14] fscrypt, ext4: prepare for blocksize != PAGE_SIZE Eric Biggers
2019-05-29 20:47 ` Eric Biggers
2019-05-29 20:47 ` Eric Biggers
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