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Date: Wed, 28 Mar 2007 16:44:28 -0700 From: Kristen Carlson Accardi <kristen.c.accardi@...el.com> To: linux-kernel@...r.kernel.org Cc: akpm@...ux-foundation.org, linux-ide@...r.kernel.org, jgarzik@...ox.com Subject: [patch 0/3] Asynchronous Notification for SATA ATAPI devices This patch series implements Asynchronous Notification (AN) for SATA ATAPI devices as defined in SATA 2.5 and AHCI 1.1. Drives which support this feature will send a notification when new media is inserted into the drive, preventing the need for user space to poll for new media. This support is exposed to user space via a file in sysfs (/sys/block/sr*) called "media_change_events". If the drive supports AN, this file will read 1, otherwise 0. User space can disable polling for new media if this file reads 1. When new media is inserted into the ATAPI drive, the ahci driver will send a KOBJ_CHANGE event. I would really like feedback on the user interface - both the location of the sysfs file which indicates AN support, as well as the type of uevent etc. I have not yet tested AN on eject (I assume it doesn't require anything special) as my test drive which supports AN is a bit "quirky" in this respect. Please take a look and let me know what you think. Thanks, Kristen -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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