| To: | Roger Willcocks <willcor@xxxxxxxxx> |
|---|---|
| Subject: | Re: clearing 'flag unwritten extents' |
| From: | Nathan Scott <nathans@xxxxxxx> |
| Date: | Mon, 14 Nov 2005 09:13:37 +1100 |
| Cc: | linux-xfs@xxxxxxxxxxx |
| In-reply-to: | <cfac95650511110448n4a06abb8pa83452a4103dfc8d@xxxxxxxxxxxxxx>; from willcor@xxxxxxxxx on Fri, Nov 11, 2005 at 12:48:48PM +0000 |
| References: | <cfac95650511101111w7e48e397w13bd8c9627e1aefd@xxxxxxxxxxxxxx> <20051111073434.B6484324@xxxxxxxxxxxxxxxxxxxxxxxx> <cfac95650511110448n4a06abb8pa83452a4103dfc8d@xxxxxxxxxxxxxx> |
| Sender: | linux-xfs-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.2.5i |
On Fri, Nov 11, 2005 at 12:48:48PM +0000, Roger Willcocks wrote: > AIUI, the 'flag unwritten extents' option allows non-root users to > preallocate unwritten extents (root can always create them). Clearing > the option would just prevent the creation of new unwritten extents. It does more than just that - in xfs_bmapi it changes the way extents are handled - look for XFS_SB_VERSION_HASEXTFLGBIT in xfs_bmap.c in particular. cheers. -- Nathan |
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