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| author | NeilBrown <neilb@suse.de> | 2013-08-27 15:52:13 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2013-08-28 16:58:36 +1000 |
| commit | c46501b2deaa06efcaaf82917281941f02c6b307 (patch) | |
| tree | bafe1a096cda8f657074d59cec815b7ae717cd96 /Documentation/robust-futexes.txt | |
| parent | b721420e8719131896b009b11edbbd27d9b85e98 (diff) | |
| download | blackbird-obmc-linux-c46501b2deaa06efcaaf82917281941f02c6b307.tar.gz blackbird-obmc-linux-c46501b2deaa06efcaaf82917281941f02c6b307.zip | |
md/raid5: use seqcount to protect access to shape in make_request.
make_request() access various shape parameters (raid_disks, chunk_size
etc) which might be changed by raid5_start_reshape().
If the later is called at and awkward time during the form, the wrong
stripe_head might be used.
So introduce a 'seqcount' and after finding a stripe_head make sure
there is no reason to expect that we got the wrong one.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'Documentation/robust-futexes.txt')
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