From: Matthew Wilcox <willy@linux.intel.com>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v11 13/21] ext2: Remove ext2_xip_verify_sb()
Date: Thu, 16 Oct 2014 17:45:07 -0400 [thread overview]
Message-ID: <20141016214507.GI11522@wil.cx> (raw)
In-Reply-To: <20141016121802.GK19075@thinkos.etherlink>
On Thu, Oct 16, 2014 at 02:18:02PM +0200, Mathieu Desnoyers wrote:
> On 25-Sep-2014 04:33:30 PM, Matthew Wilcox wrote:
> > Jan Kara pointed out that calling ext2_xip_verify_sb() in ext2_remount()
> > doesn't make sense, since changing the XIP option on remount isn't
> > allowed. It also doesn't make sense to re-check whether blocksize is
> > supported since it can't change between mounts.
>
> By "doesn't make sense", do you mean it is never actually used, or that
> it is possible for a current user to trigger issues by changing XIP
> option on remount ? If it is the case, then this patch should probably
> be flagged as a "Fix".
I mean that we're checking for a condition that can't actually happen,
so it's safe to just delete the check.
next prev parent reply other threads:[~2014-10-16 21:45 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 20:33 [PATCH v11 00/21] Add support for NV-DIMMs to ext4 Matthew Wilcox
2014-09-25 20:33 ` [PATCH v11 01/21] axonram: Fix bug in direct_access Matthew Wilcox
2014-10-16 7:52 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 02/21] block: Change direct_access calling convention Matthew Wilcox
2014-10-16 8:45 ` Mathieu Desnoyers
2014-10-16 19:39 ` Matthew Wilcox
2014-09-25 20:33 ` [PATCH v11 03/21] mm: Fix XIP fault vs truncate race Matthew Wilcox
2014-10-16 8:56 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 04/21] mm: Allow page fault handlers to perform the COW Matthew Wilcox
2014-10-16 9:12 ` Mathieu Desnoyers
2014-10-16 19:48 ` Matthew Wilcox
2014-10-17 15:35 ` Mathieu Desnoyers
2014-10-18 17:22 ` Matthew Wilcox
2014-09-25 20:33 ` [PATCH v11 05/21] vfs,ext2: Introduce IS_DAX(inode) Matthew Wilcox
2014-10-16 9:35 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 06/21] vfs: Add copy_to_iter(), copy_from_iter() and iov_iter_zero() Matthew Wilcox
2014-10-16 13:33 ` Mathieu Desnoyers
2014-10-16 13:59 ` Matthew Wilcox
2014-10-16 14:12 ` Mathieu Desnoyers
2014-10-16 22:21 ` Matthew Wilcox
2014-10-17 15:39 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 07/21] dax,ext2: Replace XIP read and write with DAX I/O Matthew Wilcox
2014-10-16 9:50 ` Mathieu Desnoyers
2014-10-16 19:51 ` Matthew Wilcox
2014-10-16 22:33 ` Matthew Wilcox
2014-10-17 15:52 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 08/21] dax,ext2: Replace ext2_clear_xip_target with dax_clear_blocks Matthew Wilcox
2014-10-16 10:05 ` Mathieu Desnoyers
2014-10-16 21:22 ` Matthew Wilcox
2014-10-17 15:45 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 09/21] dax,ext2: Replace the XIP page fault handler with the DAX page fault handler Matthew Wilcox
2014-10-16 10:20 ` Mathieu Desnoyers
2014-10-16 21:29 ` Matthew Wilcox
2014-09-25 20:33 ` [PATCH v11 10/21] dax,ext2: Replace xip_truncate_page with dax_truncate_page Matthew Wilcox
2014-10-16 10:28 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 11/21] dax: Replace XIP documentation with DAX documentation Matthew Wilcox
2014-10-16 12:08 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 12/21] vfs: Remove get_xip_mem Matthew Wilcox
2014-10-16 12:14 ` Mathieu Desnoyers
2014-10-16 21:44 ` Matthew Wilcox
2014-09-25 20:33 ` [PATCH v11 13/21] ext2: Remove ext2_xip_verify_sb() Matthew Wilcox
2014-10-16 12:18 ` Mathieu Desnoyers
2014-10-16 21:45 ` Matthew Wilcox [this message]
2014-09-25 20:33 ` [PATCH v11 14/21] ext2: Remove ext2_use_xip Matthew Wilcox
2014-10-16 12:20 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 15/21] ext2: Remove xip.c and xip.h Matthew Wilcox
2014-10-16 12:21 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 16/21] vfs,ext2: Remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX Matthew Wilcox
2014-10-16 12:26 ` Mathieu Desnoyers
2014-10-16 21:52 ` Matthew Wilcox
2014-09-25 20:33 ` [PATCH v11 17/21] ext2: Remove ext2_aops_xip Matthew Wilcox
2014-10-16 12:29 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 18/21] ext2: Get rid of most mentions of XIP in ext2 Matthew Wilcox
2014-10-16 12:32 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 19/21] dax: Add dax_zero_page_range Matthew Wilcox
2014-10-16 12:38 ` Mathieu Desnoyers
2014-10-16 22:01 ` Matthew Wilcox
2014-10-17 15:49 ` Mathieu Desnoyers
2014-10-18 17:41 ` Matthew Wilcox
2014-10-18 21:16 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 20/21] ext4: Add DAX functionality Matthew Wilcox
2014-10-16 12:56 ` Mathieu Desnoyers
2014-10-16 22:16 ` Matthew Wilcox
2014-10-17 15:42 ` Mathieu Desnoyers
2014-09-25 20:33 ` [PATCH v11 21/21] brd: Rename XIP to DAX Matthew Wilcox
2014-10-16 13:00 ` Mathieu Desnoyers
2015-03-24 18:50 ` Matt Mullins
2015-03-25 3:25 ` Dave Chinner
2015-03-26 17:09 ` Should implementations of ->direct_access be allowed to sleep? Matthew Wilcox
2015-03-26 19:32 ` Dave Chinner
2015-03-29 8:02 ` Boaz Harrosh
2015-03-29 9:13 ` Boaz Harrosh
2014-09-25 20:47 ` [PATCH v11 00/21] Add support for NV-DIMMs to ext4 Matthew Wilcox
2014-09-30 9:45 ` Valdis.Kletnieks
2014-09-30 14:48 ` Matthew Wilcox
2014-09-30 14:53 ` Valdis.Kletnieks
2014-09-30 16:08 ` Matthew Wilcox
2014-09-30 17:10 ` Zuckerman, Boris
2014-09-30 19:24 ` Matthew Wilcox
2014-09-30 19:31 ` Zuckerman, Boris
2014-09-30 20:37 ` Valdis.Kletnieks
2014-09-30 21:25 ` Andreas Dilger
2014-09-30 21:52 ` Valdis.Kletnieks
2014-10-01 15:45 ` Jeff Moyer
2014-10-01 17:10 ` Valdis.Kletnieks
2014-10-01 17:17 ` Valdis.Kletnieks
2014-10-16 7:39 ` Mathieu Desnoyers
2014-10-16 14:11 ` 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=20141016214507.GI11522@wil.cx \
--to=willy@linux.intel.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=matthew.r.wilcox@intel.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).