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| author |   Jeffle Xu <jefflexu@linux.alibaba.com> | 2022-04-25 20:21:26 +0800 |
|---|---|---|
| committer |   Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-05-18 00:11:17 +0800 |
| commit | 324b954ac80cff0d11ddb6bde9b6631e45e98620 (patch) | |
| tree | 3f8552c1f21b05fdbdb7aba70e62f6438aafa6f3 /include/uapi | |
| parent | cachefiles: unbind cachefiles gracefully in on-demand mode (diff) | |
| download | linux-dev-324b954ac80cff0d11ddb6bde9b6631e45e98620.tar.xz linux-dev-324b954ac80cff0d11ddb6bde9b6631e45e98620.zip | |
cachefiles: notify the user daemon when withdrawing cookie
Notify the user daemon that cookie is going to be withdrawn, providing a
hint that the associated anonymous fd can be closed.
Be noted that this is only a hint. The user daemon may close the
associated anonymous fd when receiving the CLOSE request, then it will
receive another anonymous fd when the cookie gets looked up. Or it may
ignore the CLOSE request, and keep writing data through the anonymous
fd. However the next time the cookie gets looked up, the user daemon
will still receive another new anonymous fd.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Acked-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20220425122143.56815-5-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/cachefiles.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/cachefiles.h b/include/uapi/linux/cachefiles.h index 521f2fe4fe9c..37a0071037c8 100644 --- a/include/uapi/linux/cachefiles.h +++ b/include/uapi/linux/cachefiles.h @@ -12,6 +12,7 @@ enum cachefiles_opcode { CACHEFILES_OP_OPEN, + CACHEFILES_OP_CLOSE, }; /* |