Pure nfs client performance using odirect. When an application opens a file with O_DIRECT flag, if the size of the data that is written is equal to wsize, the client sends a WRITE RPC with stable flag set to UNSTABLE followed by a single COMMIT RPC rather than sending a single WRITE RPC with the stable flag set to FILE_SYNC. This a bug. Patch to fix this. Signed-off-by: Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx> Index: linux-2.6.36-rc7/fs/nfs/direct.c =================================================================== --- linux-2.6.36-rc7.orig/fs/nfs/direct.c 2010-11-18 15:53:15.904972002 +0530 +++ linux-2.6.36-rc7/fs/nfs/direct.c 2010-11-18 15:54:01.184972001 +0530 @@ -867,7 +867,7 @@ goto out; nfs_alloc_commit_data(dreq); - if (dreq->commit_data == NULL || count < wsize) + if (dreq->commit_data == NULL || count <= wsize) sync = NFS_FILE_SYNC; dreq->inode = inode; -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
