This updates mkfs.btrfs's man page with the new limitation that nodesize must be a power of 2 as well.
Signed-off-by: Liu Bo <bo.li....@oracle.com> --- Documentation/mkfs.btrfs.asciidoc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/mkfs.btrfs.asciidoc b/Documentation/mkfs.btrfs.asciidoc index 46a4d2d..d53d9e2 100644 --- a/Documentation/mkfs.btrfs.asciidoc +++ b/Documentation/mkfs.btrfs.asciidoc @@ -76,8 +76,8 @@ Alias for --nodesize. Deprecated. *-n|--nodesize <size>*:: Specify the nodesize, the tree block size in which btrfs stores metadata. The default value is 16KiB (16384) or the page size, whichever is bigger. Must be a -multiple of the sectorsize, but not larger than 64KiB (65536). Leafsize always -equals nodesize and the options are aliases. +multiple of the sectorsize and a power of 2, but not larger than 64KiB (65536). +Leafsize always equals nodesize and the options are aliases. + Smaller node size increases fragmentation but lead to higher b-trees which in turn leads to lower locking contention. Higher node sizes give better packing -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
