diff options
| author | Neil Brown <neilb@notabene.brown> | 2008-07-03 02:45:35 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-07-24 09:14:03 -0700 |
| commit | e116ec2ae0acf03d52459afeed259a449112b2b2 (patch) | |
| tree | 38eb8eca81dd99d8030289fd6f26adf24e92d541 /include | |
| parent | 583fe2db21978453aa522f56320f15b2de0d9d88 (diff) | |
md: Don't acknowlege that stripe-expand is complete until it really is.
commit efe311431869b40d67911820a309f9a1a41306f3 upstream
We shouldn't acknowledge that a stripe has been expanded (When
reshaping a raid5 by adding a device) until the moved data has
actually been written out. However we are currently
acknowledging (by calling md_done_sync) when the POST_XOR
is complete and before the write.
So track in s.locked whether there are pending writes, and don't
call md_done_sync yet if there are.
Note: we all set R5_LOCKED on devices which are are about to
read from. This probably isn't technically necessary, but is
usually done when writing a block, and justifies the use of
s.locked here.
This bug can lead to a crash if an array is stopped while an reshape
is in progress.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions