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| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2006-04-10 22:53:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 06:18:35 -0700 |
| commit | f2ea394082c5d1682e6a131c5981085b8752c6e9 (patch) | |
| tree | b7789cee4e6484d5063a28a59dcf320ee4676017 /scripts/patch-kernel | |
| parent | [PATCH] uml: make 64-bit COW files compatible with 32-bit ones (diff) | |
| download | linux-f2ea394082c5d1682e6a131c5981085b8752c6e9.tar.gz linux-f2ea394082c5d1682e6a131c5981085b8752c6e9.zip | |
[PATCH] uml: safe migration path to the correct V3 COW format
- Correct the layout of all header versions - make all them well-specified
for any external event. As we don't have 1-byte or 2-byte wide fields, the
32-bit layout (historical one) has no extra padding, so we can safely add
__attribute__((packed)).
- Add detection and reading of the broken 64-bit COW format which has been
around for a while - to allow safe migration to the correct 32-bit format.
Safe detection is possible, thanks to some luck with the existing format,
and it works in practice.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions