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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-02-20 11:54:53 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-02-20 11:54:53 -0800 |
| commit | 4c971aa78314253cce914ed29e3d90df3326d646 (patch) | |
| tree | a9dcf0b1fdc9e1aacff90afb5b3ab79983115dcc /drivers/md/dm.c | |
| parent | 4ba24fef3eb3b142197135223b90ced2f319cd53 (diff) | |
| parent | 290b799c390d77d27effee3ce312203aaa32ee74 (diff) | |
Merge branch 'next' into for-linus
Second round of updates for 3.20.
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index b98cd9d8443..2caf5b37464 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -206,6 +206,9 @@ struct mapped_device { /* zero-length flush that will be cloned and submitted to targets */ struct bio flush_bio; + /* the number of internal suspends */ + unsigned internal_suspend_count; + struct dm_stats stats; }; @@ -2928,7 +2931,7 @@ static void __dm_internal_suspend(struct mapped_device *md, unsigned suspend_fla { struct dm_table *map = NULL; - if (dm_suspended_internally_md(md)) + if (md->internal_suspend_count++) return; /* nested internal suspend */ if (dm_suspended_md(md)) { @@ -2953,7 +2956,9 @@ static void __dm_internal_suspend(struct mapped_device *md, unsigned suspend_fla static void __dm_internal_resume(struct mapped_device *md) { - if (!dm_suspended_internally_md(md)) + BUG_ON(!md->internal_suspend_count); + + if (--md->internal_suspend_count) return; /* resume from nested internal suspend */ if (dm_suspended_md(md)) |