Messages in this thread Patch in this message | | | Date | Fri, 24 Feb 2006 20:18:49 +0000 (GMT) | From | Hugh Dickins <> | Subject | [PATCH] tmpfs: recommend remount for mpol |
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akpm points out that switching to a non-NUMA kernel could be irritating if mounting tmpfs fails on an mpol option: tmpfs.txt recommend remount.
Signed-off-by: Hugh Dickins <hugh@veritas.com> ---
Documentation/filesystems/tmpfs.txt | 9 +++++++++ 1 files changed, 9 insertions(+)
--- 2.6.16-rc4-git7/Documentation/filesystems/tmpfs.txt 2006-02-24 19:56:07.000000000 +0000 +++ linux/Documentation/filesystems/tmpfs.txt 2006-02-24 19:56:45.000000000 +0000 @@ -92,6 +92,15 @@ NodeList format is a comma-separated lis a range being two hyphen-separated decimal numbers, the smallest and largest node numbers in the range. For example, mpol=bind:0-3,5,7,9-15 +Note that trying to mount a tmpfs with an mpol option will fail if the +running kernel does not support NUMA; and will fail if its nodelist +specifies a node >= MAX_NUMNODES. If your system relies on that tmpfs +being mounted, but from time to time runs a kernel built without NUMA +capability (perhaps a safe recovery kernel), or configured to support +fewer nodes, then it is advisable to omit the mpol option from automatic +mount options. It can be added later, when the tmpfs is already mounted +on MountPoint, by 'mount -o remount,mpol=Policy:NodeList MountPoint'. + To specify the initial root directory you can use the following mount options: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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