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| author | Dominique Martinet <dominique.martinet@cea.fr> | 2014-01-10 13:44:09 +0100 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@gmail.com> | 2014-01-10 09:20:51 -0600 |
| commit | fb89b45cdfdc8bdab93986f1bc1474e313295c31 (patch) | |
| tree | c19ec0f84315c6dc77ca2447f58e2508b76ce88a /fs/9p/vfs_inode_dotl.c | |
| parent | f94741fd2832e7abc30fbf6dc13ed627c1fcc01a (diff) | |
| download | blackbird-op-linux-fb89b45cdfdc8bdab93986f1bc1474e313295c31.tar.gz blackbird-op-linux-fb89b45cdfdc8bdab93986f1bc1474e313295c31.zip | |
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_inode_dotl.c')
| -rw-r--r-- | fs/9p/vfs_inode_dotl.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 98013068f35b..59dc8e87647f 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -330,7 +330,8 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, v9inode = V9FS_I(inode); mutex_lock(&v9inode->v_mutex); - if (v9ses->cache && !v9inode->writeback_fid && + if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && + !v9inode->writeback_fid && ((flags & O_ACCMODE) != O_RDONLY)) { /* * clone a fid and add it to writeback_fid @@ -353,7 +354,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, if (err) goto err_clunk_old_fid; file->private_data = ofid; - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) v9fs_cache_inode_set_cookie(inode, file); *opened |= FILE_CREATED; out: @@ -710,7 +711,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, } v9fs_invalidate_inode_attr(dir); - if (v9ses->cache) { + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { /* Now walk from the parent so we can get an unopened fid. */ fid = p9_client_walk(dfid, 1, &name, 1); if (IS_ERR(fid)) { @@ -965,7 +966,7 @@ int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode) */ i_size = inode->i_size; v9fs_stat2inode_dotl(st, inode); - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) inode->i_size = i_size; spin_unlock(&inode->i_lock); out: |
