[CRIU] [PATCH RFC 0/2] Mount point hash

[Stanislav Kinsburskiy]

23.03.2016 12:14, Pavel Emelyanov пишет:
> On 03/17/2016 03:53 PM, Stanislav Kinsburskiy wrote:
>> This series introduces hash for mount points.
>> The major reason for it is upcomming NFS migration, which is expected to
>> heavily search over mount points by mnt_id (to be able to get file system ID
>> instead of statfs() call, for instance).
>> The idea is trivial and doesn't require an explicit explanation.
>> However, there will be two sets of mount points is this series is merged: hash
>> and list.
>> List looks redundant and less efficient. Traversing hash table for all the
>> mounts has the same complexity as over the list: O(n).
>> But replacing the list with hash will require a lot or code refactoring, and
>> I'm not sure, does it worth it.
> The mnt_id, which you plan to use to lookup fstype for file descriptors,
> was introduced later than 3.11, thus this patch won't make any use for
> this kernel.

Sorry, but I don't understand what you are trying to say by this comment.
Could you please elaborate?

>> BTW, more hashes can be introduced (with s_dev as a key, for instance; or by
>> fs->type).
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