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Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapped files

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From: Ingo Oeser <ioe-lkml@...>
To: Linus Torvalds <torvalds@...>
Cc: Miklos Szeredi <miklos@...>, <peterz@...>, <salikhmetov@...>, <linux-mm@...>, <jakob@...>, <linux-kernel@...>, <valdis.kletnieks@...>, <riel@...>, <ksm@...>, <staubach@...>, <jesper.juhl@...>, <akpm@...>, <protasnb@...>, <r.e.wolff@...>, <hidave.darkstar@...>, <hch@...>
Subject: Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapped files
Date: Friday, January 18, 2008 - 6:32 pm

Hi Linus,

On Friday 18 January 2008, Linus Torvalds wrote:

Can we get "if the write to the page hits the disk, the mtime has hit the disk
already no less than SOME_GRANULARITY before"? 

That is very important for computer forensics. Esp. in saving your ass!

Ok, now back again to making that fast :-)


Best Regards

Ingo Oeser
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Messages in current thread:
[PATCH -v6 0/2] Fixing the issue with memory-mapped file times, Anton Salikhmetov, (Thu Jan 17, 6:31 pm)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Miklos Szeredi, (Fri Jan 18, 5:40 am)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Anton Salikhmetov, (Fri Jan 18, 3:48 pm)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Miklos Szeredi, (Sat Jan 19, 6:45 am)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Anton Salikhmetov, (Fri Jan 18, 6:31 am)
[PATCH -v6 2/2] Updating ctime and mtime for memory-mapped f..., Anton Salikhmetov, (Thu Jan 17, 6:31 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 5:51 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 6:15 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 6:38 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 7:00 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 7:17 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 7:23 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 7:36 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 6:25 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 1:58 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 2:11 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 2:43 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 2:57 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 3:08 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 3:22 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 3:35 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Ingo Oeser, (Fri Jan 18, 6:32 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 6:47 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Staubach, (Mon Jan 21, 10:25 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Mon Jan 21, 10:36 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Rik van Riel, (Fri Jan 18, 6:54 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Matt Mackall, (Fri Jan 18, 8:50 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Sat Jan 19, 6:22 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Matt Mackall, (Sat Jan 19, 11:49 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Rik van Riel, (Sat Jan 19, 12:25 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 3:58 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 4:22 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 5:03 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 5:27 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 6:04 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 6:21 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 6:35 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Rik van Riel, (Fri Jan 18, 2:28 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 2:51 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 6:39 am)
[PATCH -v6 1/2] Massive code cleanup of sys_msync(), Anton Salikhmetov, (Thu Jan 17, 6:31 pm)
Re: [PATCH -v6 1/2] Massive code cleanup of sys_msync(), Miklos Szeredi, (Fri Jan 18, 5:33 am)
Re: [PATCH -v6 1/2] Massive code cleanup of sys_msync(), Anton Salikhmetov, (Fri Jan 18, 6:30 am)