SUNRPC: move cache_detail->cache_request callback call to cache_read()

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The reason to move cache_request() callback call from
sunrpc_cache_pipe_upcall() to cache_read() is that this garantees, that cache
access will be done userspace process context (only userspace process have
proper root context).
This is required for NFSd support in container: svc_export_request() (which is
cache_request callback) calls d_path(), which, in turn, traverse dentry up to
current->fs->root. Kernel threads always have global root, while container
have be in "root jail" - i.e. have it's own nested root.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

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Stanislav Kinsbursky 2013-02-04 14:03:03 +03:00 • committed by J. Bruce Fields

parent 21cd1254d3

commit d94af6dea9

1 changed files with 20 additions and 12 deletions

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net/sunrpc/cache.c

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