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  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Wed, 15 Sep 2010 18:23:38 +0200 (CEST)
From:	Lukas Czerner <lczerner@...hat.com>
To:	Lukas Czerner <lczerner@...hat.com>
cc:	Mike Snitzer <snitzer@...hat.com>, linux-ext4@...r.kernel.org,
	tytso@....edu, sandeen@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH v2] block: Make blkdev_issue_discard() interruptible

Since the discard may take quite long time, especially with really big
extents (like the whole device for example), it would be nice to give to
users the opportunity to abort it. This is especially useful for mkfs,
when user can not know in advance how long it will take.

In conjunction with mke2fs patch "Inform user about ongoing discard"
it gives the user all the comfort of being informed about discard and
being able to abort the operation.

Signed-off-by: Lukas Czerner <lczerner@...hat.com>
---
 block/blk-lib.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/block/blk-lib.c b/block/blk-lib.c
index d0216b9..f1eb78e 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -102,6 +102,11 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
 		else if (!bio_flagged(bio, BIO_UPTODATE))
 			ret = -EIO;
 		bio_put(bio);
+
+		if (fatal_signal_pending(current)) {
+			ret = -ERESTARTSYS;
+			break;
+		}
 	}
 	return ret;
 out_free_page:
-- 
1.7.2.2

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists