diff options
Diffstat (limited to 'fs/9p/vfs_super.c')
| -rw-r--r-- | fs/9p/vfs_super.c | 109 |
1 files changed, 87 insertions, 22 deletions
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index c55c614500a..0afd0382822 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -86,12 +86,15 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses, } else sb->s_op = &v9fs_super_ops; sb->s_bdi = &v9ses->bdi; + if (v9ses->cache) + sb->s_bdi->ra_pages = (VM_MAX_READAHEAD * 1024)/PAGE_CACHE_SIZE; - sb->s_flags = flags | MS_ACTIVE | MS_SYNCHRONOUS | MS_DIRSYNC | - MS_NOATIME; + sb->s_flags |= MS_ACTIVE | MS_DIRSYNC | MS_NOATIME; + if (!v9ses->cache) + sb->s_flags |= MS_SYNCHRONOUS; #ifdef CONFIG_9P_FS_POSIX_ACL - if ((v9ses->flags & V9FS_ACCESS_MASK) == V9FS_ACCESS_CLIENT) + if ((v9ses->flags & V9FS_ACL_MASK) == V9FS_POSIX_ACL) sb->s_flags |= MS_POSIXACL; #endif @@ -114,11 +117,11 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, struct inode *inode = NULL; struct dentry *root = NULL; struct v9fs_session_info *v9ses = NULL; - int mode = S_IRWXUGO | S_ISVTX; + umode_t mode = S_IRWXUGO | S_ISVTX; struct p9_fid *fid; int retval = 0; - P9_DPRINTK(P9_DEBUG_VFS, " \n"); + p9_debug(P9_DEBUG_VFS, "\n"); v9ses = kzalloc(sizeof(struct v9fs_session_info), GFP_KERNEL); if (!v9ses) @@ -134,22 +137,26 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, goto close_session; } - sb = sget(fs_type, NULL, v9fs_set_super, v9ses); + sb = sget(fs_type, NULL, v9fs_set_super, flags, v9ses); if (IS_ERR(sb)) { retval = PTR_ERR(sb); goto clunk_fid; } v9fs_fill_super(sb, v9ses, flags, data); - inode = v9fs_get_inode(sb, S_IFDIR | mode); + 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; + + inode = v9fs_get_inode(sb, S_IFDIR | mode, 0); if (IS_ERR(inode)) { retval = PTR_ERR(inode); goto release_sb; } - root = d_alloc_root(inode); + root = d_make_root(inode); if (!root) { - iput(inode); retval = -ENOMEM; goto release_sb; } @@ -161,7 +168,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, retval = PTR_ERR(st); goto release_sb; } - + root->d_inode->i_ino = v9fs_qid2ino(&st->qid); v9fs_stat2inode_dotl(st, root->d_inode); kfree(st); } else { @@ -183,7 +190,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, goto release_sb; v9fs_fid_add(root, fid); - P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n"); + p9_debug(P9_DEBUG_VFS, " simple set mount, return 0\n"); return dget(sb->s_root); clunk_fid: @@ -215,10 +222,7 @@ static void v9fs_kill_super(struct super_block *s) { struct v9fs_session_info *v9ses = s->s_fs_info; - P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s); - - if (s->s_root) - v9fs_dentry_release(s->s_root); /* clunk root */ + p9_debug(P9_DEBUG_VFS, " %p\n", s); kill_anon_super(s); @@ -226,7 +230,7 @@ static void v9fs_kill_super(struct super_block *s) v9fs_session_close(v9ses); kfree(v9ses); s->s_fs_info = NULL; - P9_DPRINTK(P9_DEBUG_VFS, "exiting kill_super\n"); + p9_debug(P9_DEBUG_VFS, "exiting kill_super\n"); } static void @@ -251,11 +255,11 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf) goto done; } - v9ses = v9fs_inode2v9ses(dentry->d_inode); + v9ses = v9fs_dentry2v9ses(dentry); if (v9fs_proto_dotl(v9ses)) { res = p9_client_statfs(fid, &rs); if (res == 0) { - buf->f_type = V9FS_MAGIC; + buf->f_type = rs.type; buf->f_bsize = rs.bsize; buf->f_blocks = rs.blocks; buf->f_bfree = rs.bfree; @@ -274,26 +278,86 @@ done: return res; } +static int v9fs_drop_inode(struct inode *inode) +{ + struct v9fs_session_info *v9ses; + v9ses = v9fs_inode2v9ses(inode); + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) + return generic_drop_inode(inode); + /* + * in case of non cached mode always drop the + * the inode because we want the inode attribute + * to always match that on the server. + */ + return 1; +} + +static int v9fs_write_inode(struct inode *inode, + struct writeback_control *wbc) +{ + int ret; + struct p9_wstat wstat; + struct v9fs_inode *v9inode; + /* + * 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); + if (!v9inode->writeback_fid) + return 0; + v9fs_blank_wstat(&wstat); + + ret = p9_client_wstat(v9inode->writeback_fid, &wstat); + if (ret < 0) { + __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + return ret; + } + return 0; +} + +static int v9fs_write_inode_dotl(struct inode *inode, + struct writeback_control *wbc) +{ + int ret; + struct v9fs_inode *v9inode; + /* + * send an fsync request to server irrespective of + * wbc->sync_mode. + */ + 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); + return ret; + } + return 0; +} + static const struct super_operations v9fs_super_ops = { -#ifdef CONFIG_9P_FSCACHE .alloc_inode = v9fs_alloc_inode, .destroy_inode = v9fs_destroy_inode, -#endif .statfs = simple_statfs, .evict_inode = v9fs_evict_inode, .show_options = generic_show_options, .umount_begin = v9fs_umount_begin, + .write_inode = v9fs_write_inode, }; static const struct super_operations v9fs_super_ops_dotl = { -#ifdef CONFIG_9P_FSCACHE .alloc_inode = v9fs_alloc_inode, .destroy_inode = v9fs_destroy_inode, -#endif .statfs = v9fs_statfs, + .drop_inode = v9fs_drop_inode, .evict_inode = v9fs_evict_inode, .show_options = generic_show_options, .umount_begin = v9fs_umount_begin, + .write_inode = v9fs_write_inode_dotl, }; struct file_system_type v9fs_fs_type = { @@ -303,3 +367,4 @@ struct file_system_type v9fs_fs_type = { .owner = THIS_MODULE, .fs_flags = FS_RENAME_DOES_D_MOVE, }; +MODULE_ALIAS_FS("9p"); |