linux-kernel - Re: [patch 7/8] fs, notify: Add procfs fdinfo helper v3

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Date:	Tue, 14 Aug 2012 18:23:44 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	James Bottomley <jbottomley@...allels.com>,
	Matthew Helsley <matt.helsley@...il.com>
Subject: Re: [patch 7/8] fs, notify: Add procfs fdinfo helper v3

On 08/14/2012 06:03 PM, Cyrill Gorcunov wrote:
> This allow us to print out fsnotify details such as
> watchee inode, device, mask and file handle.
> 
> For example for inotify objects the output is
> 
>  | pos: 0
>  | flags:       02000000
>  | inotify wd:        3 ino:             9e7e sdev:   800013 mask:  800afce ignored_mask:        0 fhandle-bytes:        8 fhandle-type:        1 f_handle: 7e9e0000640d1b6d
>  | inotify wd:        2 ino:             a111 sdev:   800013 mask:  800afce ignored_mask:        0 fhandle-bytes:        8 fhandle-type:        1 f_handle: 11a1000020542153
>  | inotify wd:        1 ino:            6b149 sdev:   800013 mask:  800afce ignored_mask:        0 fhandle-bytes:        8 fhandle-type:        1 f_handle: 49b1060023552153
> 
> For fanotify it is like
> 
>  | pos: 0
>  | flags:       02
>  | fanotify ino:            68f71 sdev:   800013 mask:        1 ignored_mask: 40000000 fhandle-bytes:        8 fhandle-type:        1 f_handle: 718f0600b9f42053
>  | fanotify mnt_id:       13 mask:        1 ignored_mask: 40000000
> 
> This feature is CONFIG_CHECKPOINT_RESTORE only. To minimize
> impact on general fsnotify code the new functionality is gathered
> in fs/notify/fdinfo.c file mostly.
> 
> v2:
>  - append missing colons to terms
> v3:
>  - continue from pervious position in list on ->next
> 
> Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
> CC: Al Viro <viro@...IV.linux.org.uk>
> CC: Alexey Dobriyan <adobriyan@...il.com>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: Pavel Emelyanov <xemul@...allels.com>
> CC: James Bottomley <jbottomley@...allels.com>

Acked-by: Pavel Emelyanov <xemul@...allels.com>

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