From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 18 Oct 2006 10:25:12 -0400 From: Chris Mason Subject: Re: [patch 6/6] mm: fix pagecache write deadlocks Message-ID: <20061018142512.GA16570@think.oraclecorp.com> References: <20061013143516.15438.8802.sendpatchset@linux.site> <20061013143616.15438.77140.sendpatchset@linux.site> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061013143616.15438.77140.sendpatchset@linux.site> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Linux Memory Management , Neil Brown , Andrew Morton , Anton Altaparmakov , Linux Kernel List-ID: > Index: linux-2.6/fs/buffer.c > =================================================================== > --- linux-2.6.orig/fs/buffer.c > +++ linux-2.6/fs/buffer.c > @@ -1856,6 +1856,9 @@ static int __block_commit_write(struct i > unsigned blocksize; > struct buffer_head *bh, *head; > > + if (from == to) > + return 0; > + > blocksize = 1 << inode->i_blkbits; reiserfs v3 copied the __block_commit_write logic for checking for a partially updated page, so reiserfs_commit_page will have to be updated to handle from==to. Right now it will set the page up to date. I also used a prepare/commit pare where from==to as a way to trigger tail conversions in the lilo ioctl. I'll both for you and make a patch. -chris -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org