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mounts: if a mount can't be mounted, it is queued in postpone list (v4)

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Try to restore mounts while a postpone list isn't empty and check
that each iteration has some progress, otherwice it will fails for
preventing infinite loops

v2: rework logic about postpone list
    add more comments

v3: one more attempt to make it more readable
v4: Here is a master class from Pavel how to write self-documented code.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2013-08-29 18:52:43 +04:00
committed by Pavel Emelyanov
parent 2b4a8d29d6
commit e01072c05a
2 changed files with 58 additions and 5 deletions
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include/proc_parse.h
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@@ -121,6 +121,8 @@ struct mount_info {
struct list_head mnt_slave_list;/* list of slave mounts */
struct list_head mnt_slave; /* slave list entry */
struct mount_info *mnt_master; /* slave is on master->mnt_slave_list */
struct list_head postpone;
};
struct proc_posix_timer {