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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_super.c | |
| parent | f94741fd2832e7abc30fbf6dc13ed627c1fcc01a (diff) | |
| download | linux-fb89b45cdfdc8bdab93986f1bc1474e313295c31.tar.bz2 | |
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.c | 8 |
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); |