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authorDominique Martinet <dominique.martinet@cea.fr>2014-01-10 16:44:09 +0400
committerEric Van Hensbergen <ericvh@gmail.com>2014-01-10 19:20:51 +0400
commitfb89b45cdfdc8bdab93986f1bc1474e313295c31 (patch)
treec19ec0f84315c6dc77ca2447f58e2508b76ce88a /fs/9p/vfs_super.c
parentf94741fd2832e7abc30fbf6dc13ed627c1fcc01a (diff)
downloadlinux-fb89b45cdfdc8bdab93986f1bc1474e313295c31.tar.xz
9P: introduction of a new cache=mmap model.
- Add cache=mmap option - Make mmap read-write while keeping it as synchronous as possible - Build writeback fid on mmap creation if it is writable Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs/9p/vfs_super.c')
-rw-r--r--fs/9p/vfs_super.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 2756dcd5de6e..0afd0382822b 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -144,7 +144,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
}
v9fs_fill_super(sb, v9ses, flags, data);
- if (v9ses->cache)
+ if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
sb->s_d_op = &v9fs_cached_dentry_operations;
else
sb->s_d_op = &v9fs_dentry_operations;
@@ -282,7 +282,7 @@ static int v9fs_drop_inode(struct inode *inode)
{
struct v9fs_session_info *v9ses;
v9ses = v9fs_inode2v9ses(inode);
- if (v9ses->cache)
+ if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
return generic_drop_inode(inode);
/*
* in case of non cached mode always drop the
@@ -325,10 +325,12 @@ static int v9fs_write_inode_dotl(struct inode *inode,
* send an fsync request to server irrespective of
* wbc->sync_mode.
*/
- p9_debug(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode);
v9inode = V9FS_I(inode);
+ p9_debug(P9_DEBUG_VFS, "%s: inode %p, writeback_fid %p\n",
+ __func__, inode, v9inode->writeback_fid);
if (!v9inode->writeback_fid)
return 0;
+
ret = p9_client_fsync(v9inode->writeback_fid, 0);
if (ret < 0) {
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);