tree 33961747d5ae2927bd04120140f1956f0a022c66
parent 508e0893686794be55cfaa336fea584b16a471d9
author Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 1271680451 +0100
committer Kevin Wolf <kwolf@redhat.com> 1272874051 +0200

raw-posix: Use pread/pwrite instead of lseek+read/write

This patch combines the lseek+read/write calls to use pread/pwrite
instead.  This will result in fewer system calls and is already used by
AIO.

Thanks to Jan Kiszka <jan.kiszka@siemens.com> for identifying excessive
lseek and Christoph Hellwig <hch@lst.de> for confirming that this
approach should work.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>