diff options
| author |   Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2015-01-16 18:29:04 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-01-22 12:16:04 +0100 |
| commit | 5be6fdc090e156bc67b63310b65f4f54523e7b6c (patch) | |
| tree | cdc9cf51dd1b3f73185a82a6a61ea542f56051b9 /drivers/s390/block/dcssblk.c | |
| parent | s390: add SMT support (diff) | |
| download | linux-dev-5be6fdc090e156bc67b63310b65f4f54523e7b6c.tar.xz linux-dev-5be6fdc090e156bc67b63310b65f4f54523e7b6c.zip | |
dcssblk: issue warning when trying to save SN/EN type DCSS
The content of a DCSS of type SN or EN cannot be saved. Issue a warning when
trying to save such a DCSS. Depending on the setup, this may be a user error
or intended behaviour e.g. with a multi-DCSS device.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dcssblk.c')
| -rw-r--r-- | drivers/s390/block/dcssblk.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index b550c8c8d010..7f900229404d 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -438,7 +438,13 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char pr_info("All DCSSs that map to device %s are " "saved\n", dev_info->segment_name); list_for_each_entry(entry, &dev_info->seg_list, lh) { - segment_save(entry->segment_name); + if (entry->segment_type == SEG_TYPE_EN || + entry->segment_type == SEG_TYPE_SN) + pr_warn("DCSS %s is of type SN or EN" + " and cannot be saved\n", + entry->segment_name); + else + segment_save(entry->segment_name); } } else { // device is busy => we save it when it becomes @@ -797,7 +803,12 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) pr_info("Device %s has become idle and is being saved " "now\n", dev_info->segment_name); list_for_each_entry(entry, &dev_info->seg_list, lh) { - segment_save(entry->segment_name); + if (entry->segment_type == SEG_TYPE_EN || + entry->segment_type == SEG_TYPE_SN) + pr_warn("DCSS %s is of type SN or EN and cannot" + " be saved\n", entry->segment_name); + else + segment_save(entry->segment_name); } dev_info->save_pending = 0; } |