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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-04-02 20:55:23 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-04-02 20:55:23 +0200 |
| commit | a920f6b3accc77d9dddbc98a7426be23ee479625 (patch) | |
| tree | bff633328b5f1362d99a04f7e513a6a4b2084ad8 /fs/xfs/xfs_rename.c | |
| parent | serial: fixup /proc/tty/driver/serial after proc_fops conversion (diff) | |
| download | linux-a920f6b3accc77d9dddbc98a7426be23ee479625.tar.xz linux-a920f6b3accc77d9dddbc98a7426be23ee479625.zip | |
dm: preserve bi_io_vec when resubmitting bios
Device mapper saves and restores various fields in the bio, but it doesn't save
bi_io_vec. If the device driver modifies this after a partially successful
request, dm-raid1 and dm-multipath may attempt to resubmit a bio that has
bi_size inconsistent with the size of vector.
To make requests resubmittable in dm-raid1 and dm-multipath, we must save
and restore the bio vector as well.
To reduce the memory overhead involved in this, we do not save the pages in a
vector and use a 16-bit field size if the page size is less than 65536.
Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_rename.c')
0 files changed, 0 insertions, 0 deletions