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authorMilan Broz <mbroz@redhat.com>2008-10-10 08:37:08 -0400
committerAlasdair G Kergon <agk@redhat.com>2008-10-10 08:37:08 -0400
commit933f01d43326fb12a978a8e0bb062c28a2de4d5a (patch)
tree89f25c15fb98d90ee7377437482e444a8ac6a106 /drivers/md/dm.h
parentc8081618a9f832fdf7ca81eb087f9f61f2bf07d5 (diff)
dm crypt: avoid unnecessary wait when splitting bio
Don't wait between submitting crypt requests for a bio unless we are short of memory. There are two situations when we must split an encrypted bio: 1) there are no free pages; 2) the new bio would violate underlying device restrictions (e.g. max hw segments). In case (2) we do not need to wait. Add output variable to crypt_alloc_buffer() to distinguish between these cases. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm.h')
0 files changed, 0 insertions, 0 deletions