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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| .gitignore | -rw-r--r-- | 88 bytes |
| Kconfig | -rw-r--r-- | 14.1 KB |
| Makefile | -rw-r--r-- | 981 bytes |
| adummy.c | -rw-r--r-- | 4.0 KB |
| ambassador.c | -rw-r--r-- | 66.1 KB |
| ambassador.h | -rw-r--r-- | 15.8 KB |
| atmtcp.c | -rw-r--r-- | 11.4 KB |
| eni.c | -rw-r--r-- | 61.2 KB |
| eni.h | -rw-r--r-- | 4.6 KB |
| firestream.c | -rw-r--r-- | 54.0 KB |
| firestream.h | -rw-r--r-- | 14.6 KB |
| fore200e.c | -rw-r--r-- | 88.5 KB |
| fore200e.h | -rw-r--r-- | 38.6 KB |
| he.c | -rw-r--r-- | 75.9 KB |
| he.h | -rw-r--r-- | 19.8 KB |
| horizon.c | -rw-r--r-- | 83.8 KB |
| horizon.h | -rw-r--r-- | 16.7 KB |
| idt77105.c | -rw-r--r-- | 11.4 KB |
| idt77105.h | -rw-r--r-- | 3.7 KB |
| idt77252.c | -rw-r--r-- | 89.6 KB |
| idt77252.h | -rw-r--r-- | 33.6 KB |
| idt77252_tables.h | -rw-r--r-- | 44.9 KB |
| iphase.c | -rw-r--r-- | 108.0 KB |
| iphase.h | -rw-r--r-- | 53.4 KB |
| lanai.c | -rw-r--r-- | 81.0 KB |
| midway.h | -rw-r--r-- | 7.5 KB |
| nicstar.c | -rw-r--r-- | 74.6 KB |
| nicstar.h | -rw-r--r-- | 22.9 KB |
| nicstarmac.c | -rw-r--r-- | 6.0 KB |
| nicstarmac.copyright | -rw-r--r-- | 2.7 KB |
| solos-attrlist.c | -rw-r--r-- | 2.2 KB |
| solos-pci.c | -rw-r--r-- | 38.9 KB |
| suni.c | -rw-r--r-- | 9.8 KB |
| suni.h | -rw-r--r-- | 9.7 KB |
| tonga.h | -rw-r--r-- | 694 bytes |
| uPD98401.h | -rw-r--r-- | 11.7 KB |
| uPD98402.c | -rw-r--r-- | 6.5 KB |
| uPD98402.h | -rw-r--r-- | 4.4 KB |
| zatm.c | -rw-r--r-- | 43.3 KB |
| zatm.h | -rw-r--r-- | 3.5 KB |
| zeprom.h | -rw-r--r-- | 944 bytes |
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