lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 13 Feb 2024 10:37:10 +0100
From: "Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>
To: linux-xfs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Cc: mcgrof@...nel.org,
	gost.dev@...sung.com,
	akpm@...ux-foundation.org,
	kbusch@...nel.org,
	djwong@...nel.org,
	chandan.babu@...cle.com,
	p.raghav@...sung.com,
	linux-kernel@...r.kernel.org,
	hare@...e.de,
	willy@...radead.org,
	linux-mm@...ck.org,
	david@...morbit.com,
	Dave Chinner <dchinner@...hat.com>
Subject: [RFC v2 11/14] xfs: expose block size in stat

From: Dave Chinner <dchinner@...hat.com>

For block size larger than page size, the unit of efficient IO is
the block size, not the page size. Leaving stat() to report
PAGE_SIZE as the block size causes test programs like fsx to issue
illegal ranges for operations that require block size alignment
(e.g. fallocate() insert range). Hence update the preferred IO size
to reflect the block size in this case.

Signed-off-by: Dave Chinner <dchinner@...hat.com>
[mcgrof: forward rebase in consideration for commit
dd2d535e3fb29d ("xfs: cleanup calculating the stat optimal I/O size")]
Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 fs/xfs/xfs_iops.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index a0d77f5f512e..8791a9d80897 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -515,6 +515,8 @@ xfs_stat_blksize(
 	struct xfs_inode	*ip)
 {
 	struct xfs_mount	*mp = ip->i_mount;
+	unsigned long	default_size = max_t(unsigned long, PAGE_SIZE,
+					     mp->m_sb.sb_blocksize);
 
 	/*
 	 * If the file blocks are being allocated from a realtime volume, then
@@ -543,7 +545,7 @@ xfs_stat_blksize(
 			return 1U << mp->m_allocsize_log;
 	}
 
-	return PAGE_SIZE;
+	return default_size;
 }
 
 STATIC int
-- 
2.43.0


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ