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authorBrian Behlendorf <[email protected]>2015-07-15 10:54:26 -0700
committerBrian Behlendorf <[email protected]>2015-07-17 09:18:16 -0700
commitbd29109f1ac5be68f7f7c8bcb49e1b706fe899f0 (patch)
tree6aa5f76ed5f9748ffbb8949b752826001c9fbb1e /config/user-frame-larger-than.m4
parent7eb333fbdde32dbebdcc88c35610159e207237c9 (diff)
Linux 4.2 compat: follow_link() / put_link()
As of Linux 4.2 the kernel has completely retired the nameidata structure. One of the few remaining consumers of this interface were the follow_link() and put_link() callbacks. This patch adds the required checks to configure to detect the interface change and updates the functions accordingly. Migrating to the simple_follow_link() interface was considered but was decided against ironically due to the increased complexity. It also should be noted that the kernel follow_link() and put_link() interfaces changes several times after 4.1 and but before 4.2. This means there is a narrow range of kernel commits which never appear in an official tag of the Linux kernel which ZoL will not build. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Yao <[email protected]> Issue #3596
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