Messages in this thread | | | Subject | Re: [PATCH ] Fix some problems with truncate and mtime semantics. | From | Trond Myklebust <> | Date | Mon, 14 Nov 2005 21:03:10 -0500 |
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On Tue, 2005-11-15 at 13:00 +1100, NeilBrown wrote: > Resubmitting this patch to fix truncate/mtime semantics. > > It is against 2.6.14-mm2 and is probably suitable for 2.6.15, but can > be held over to 2.6.16 if you are feeling cautious. > > NeilBrown > > ### Comments for Changeset > > SUS requires that when truncating a file to the size that it currently > is: > truncate and ftruncate should NOT modify ctime or mtime > O_EXCL SHOULD modify ctime and mtime. ^^^^^ O_CREAT ;-)
> Currently mtime and ctime are always modified on most local > filesystems (side effect of ->truncate) or never modified (on NFS). > > With this patch: > ATTR_CTIME|ATTR_MTIME are sent with ATTR_SIZE precisely when > an update of these times is required whether size changes or not > (via a new argument to do_truncate). This allows NFS to do > the right thing for O_EXCL. ^^^^^
Cheers, Trond
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