summaryrefslogtreecommitdiffstats
path: root/include/linux/fs.h
diff options
context:
space:
mode:
authorDavid Woodhouse <dwmw2@infradead.org>2009-09-12 07:35:37 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-09-14 08:24:53 +0200
commit3d2257f157c2324acbc0fa0fa54e8626a987edd2 (patch)
treea3c05936cc4fbf49474dae072871dbab909c9ae4 /include/linux/fs.h
parentb8a9ae779f2c7049071034661e09cb7e1e82250c (diff)
downloadop-kernel-dev-3d2257f157c2324acbc0fa0fa54e8626a987edd2.zip
op-kernel-dev-3d2257f157c2324acbc0fa0fa54e8626a987edd2.tar.gz
Make DISCARD_BARRIER and DISCARD_NOBARRIER writes instead of reads
The commands are conceptually writes, and in the case of IDE and SCSI commands actually are writes. They were only reads because we thought that would interact better with the elevators. Now the elevators know about discard requests, that advantage no longer exists. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/fs.h')
-rw-r--r--include/linux/fs.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index c1f9935..7f5a8ad2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -161,8 +161,8 @@ struct inodes_stat_t {
* These aren't really reads or writes, they pass down information about
* parts of device that are now unused by the file system.
*/
-#define DISCARD_NOBARRIER (1 << BIO_RW_DISCARD)
-#define DISCARD_BARRIER ((1 << BIO_RW_DISCARD) | (1 << BIO_RW_BARRIER))
+#define DISCARD_NOBARRIER (WRITE | (1 << BIO_RW_DISCARD))
+#define DISCARD_BARRIER (DISCARD_NOBARRIER | (1 << BIO_RW_BARRIER))
#define SEL_IN 1
#define SEL_OUT 2
OpenPOWER on IntegriCloud