Revision 9b1cc9f251affdd27f29fe46d0989ba76c33faf6 authored by Joe Thornber on 23 January 2015, 10:00:07 UTC, committed by Mike Snitzer on 23 January 2015, 15:57:15 UTC
If a DM table is reloaded with an inactive table when the device is not suspended (normal procedure for LVM2), then there will be two dm-bufio objects that can diverge. This can lead to a situation where the inactive table uses bufio to read metadata at the same time the active table writes metadata -- resulting in the inactive table having stale metadata buffers once it is promoted to the active table slot. Fix this by using reference counting and a global list of cache metadata objects to ensure there is only one metadata object per metadata device. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
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| File | Mode | Size |
|---|---|---|
| .gitignore | -rw-r--r-- | 151 bytes |
| Kconfig | -rw-r--r-- | 2.9 KB |
| Makefile | -rw-r--r-- | 2.3 KB |
| gen_init_cpio.c | -rw-r--r-- | 12.7 KB |
| initramfs_data.S | -rw-r--r-- | 1.3 KB |
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