| commit | 4899d10d142e97eea8f64141a3507b2ee1a64f52 | |
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
| Mon, 19 Apr 2010 12:34:11 +0000 (19 13:34 +0100) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Mon, 3 May 2010 08:07:31 +0000 (3 10:07 +0200) | ||
| tree | 33961747d5ae2927bd04120140f1956f0a022c66 | treesnapshot (tar.gz zip) |
| parent | 508e0893686794be55cfaa336fea584b16a471d9 | commitdiff |
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>
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>
| block/raw-posix.c | diffblobblamehistory |