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authorMilan Broz <mbroz@redhat.com>2008-03-28 14:16:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-03-28 14:45:22 -0700
commit3f1e9070f63b0eecadfa059959bf7c9dbe835962 (patch)
tree1d47de4bdae1009b6efc80824ca882de0a97cfef /drivers/mtd/maps/physmap.c
parentab473a52500528a276920a26cb35b722a868ab6e (diff)
downloadlinaro-lsk-3f1e9070f63b0eecadfa059959bf7c9dbe835962.tar.gz
dm crypt: fix ctx pending
Fix regression in dm-crypt introduced in commit 3a7f6c990ad04e6f576a159876c602d14d6f7fef ("dm crypt: use async crypto"). If write requests need to be split into pieces, the code must not process them in parallel because the crypto context cannot be shared. So there can be parallel crypto operations on one part of the write, but only one write bio can be processed at a time. This is not optimal and the workqueue code needs to be optimized for parallel processing, but for now it solves the problem without affecting the performance of synchronous crypto operation (most of current dm-crypt users). http://bugzilla.kernel.org/show_bug.cgi?id=10242 http://bugzilla.kernel.org/show_bug.cgi?id=10207 Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mtd/maps/physmap.c')
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