From a8783adf24a8c40dcae0fbfa90eb231212f26884 Mon Sep 17 00:00:00 2001 From: Brian Behlendorf Date: Fri, 13 Jan 2012 11:35:05 -0800 Subject: [PATCH] Increase link count limit to 2^31-1 Originally, the per-file link limit was set to 65536 because the exact Linux VFS limit was unclear. Internally ZFS is able to support 64-bit link counts. After a more careful investigation the limit can be safely raised to 2^31-1. Signed-off-by: Brian Behlendorf Closes #514 --- include/sys/zfs_vfsops.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/sys/zfs_vfsops.h b/include/sys/zfs_vfsops.h index b7badee..7b70f32 100644 --- a/include/sys/zfs_vfsops.h +++ b/include/sys/zfs_vfsops.h @@ -113,10 +113,10 @@ typedef struct zfs_sb { /* * Allow a maximum number of links. While ZFS does not internally limit - * this most Linux filesystems do. It's probably a good idea to limit - * this to a large value until it is validated that this is safe. + * this the inode->i_nlink member is defined as an unsigned int. To be + * safe we use 2^31-1 as the limit. */ -#define ZFS_LINK_MAX 65536 +#define ZFS_LINK_MAX ((1U << 31) - 1U) /* * Normal filesystems (those not under .zfs/snapshot) have a total -- 1.8.3.1