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restore: Update real_pid comment

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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov 2011-10-13 18:15:09 +04:00
parent 7fab1b23fd
commit f08ba92df2
1 changed files with 4 additions and 5 deletions
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9
cr-restore.c
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@ -37,11 +37,10 @@ struct fmap_fd {
};
/*
* Some shared memory entries and pipe entries are created
* only in one process and got shared by others. Because of
* this the real_pid member is used. It serves like a synchronization
* point -- the process which creates a particular entity does set
* real_pid member and all other users do wait until this member is set.
* real_pid member formerly served cases when
* no fork-with-pid functionality were in kernel,
* so now it is being kept here just in case if
* we need it again.
*/
struct shmem_info {