Bug 10368

Summary: regression breaks lowmem reserved RAM
Product: IO/Storage Reporter: Rafael J. Wysocki (rjw)
Component: Block LayerAssignee: Jens Axboe (axboe)
Status: CLOSED CODE_FIX    
Severity: normal CC: andrea
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: commit 419c434c35614609fd0c79d335c134bf4b88b30b Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 9832    

Description Rafael J. Wysocki 2008-03-30 11:45:20 UTC 
Subject    : regression breaks lowmem reserved RAM
Submitter  : Andrea Arcangeli <andrea@qumranet.com>
Date       : 2008-03-28 20:49
References : http://lkml.org/lkml/2008/3/28/372

This entry is being used for tracking a regression from 2.6.24.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Rafael J. Wysocki 2008-03-30 11:46:37 UTC 
Caused by:

commit 419c434c35614609fd0c79d335c134bf4b88b30b
Author: Yang Shi <yang.shi@windriver.com>
Date:   Tue Mar 4 11:20:51 2008 +0100

    Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory
Comment 2 Rafael J. Wysocki 2008-03-30 11:48:58 UTC 
commit 419c434c35614609fd0c79d335c134bf4b88b30b

Signed-off-by: Yang Shi <yang.shi@windriver.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Comment 3 Rafael J. Wysocki 2008-04-01 17:30:53 UTC 
Handled-By : Andrea Arcangeli <andrea@qumranet.com>
Patch : http://lkml.org/lkml/2008/4/1/113