diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 8344040ecaf7..9a3df067bea6 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -725,6 +725,8 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, error = gfs2_rindex_update(sdp); if (error) goto fail; + pr_warn("DEBUG GFS2: after glock_nq dir=%px rwsem owner=%px current=%px\n", + dir, READ_ONCE(dir->i_rwsem.owner), current); error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, &d_gh); if (error) @@ -738,6 +740,9 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl); error = PTR_ERR(inode); if (!IS_ERR(inode)) { + pr_warn("DEBUG GFS2: gfs2_create_inode found existing entry! dir=%px mode=%o file=%px inode=%px S_ISDIR=%d rwsem owner=%px current=%px\n", + dir, mode, file, inode, S_ISDIR(inode->i_mode), + READ_ONCE(dir->i_rwsem.owner), current); if (S_ISDIR(inode->i_mode)) { iput(inode); inode = NULL; @@ -893,6 +898,8 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, mark_inode_dirty(inode); d_instantiate(dentry, inode); + pr_warn("DEBUG GFS2: before glock_dq dir=%px rwsem owner=%px current=%px\n", + dir, READ_ONCE(dir->i_rwsem.owner), current); /* After instantiate, errors should result in evict which will destroy * both inode and iopen glocks properly. */ if (file) { @@ -900,6 +907,8 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, error = finish_open(file, dentry, gfs2_open_common); } gfs2_glock_dq_uninit(&d_gh); + pr_warn("DEBUG GFS2: after glock_dq dir=%px rwsem owner=%px current=%px\n", + dir, READ_ONCE(dir->i_rwsem.owner), current); gfs2_qa_put(ip); gfs2_glock_dq_uninit(&gh); gfs2_glock_put(io_gl); @@ -937,7 +946,11 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, posix_acl_release(acl); fail_gunlock: gfs2_dir_no_add(&da); + pr_warn("DEBUG GFS2: fail_gunlock before glock_dq dir=%px rwsem owner=%px current=%px error=%d\n", + dir, READ_ONCE(dir->i_rwsem.owner), current, error); gfs2_glock_dq_uninit(&d_gh); + pr_warn("DEBUG GFS2: fail_gunlock after glock_dq dir=%px rwsem owner=%px current=%px\n", + dir, READ_ONCE(dir->i_rwsem.owner), current); if (!IS_ERR_OR_NULL(inode)) { if (inode_state_read_once(inode) & I_NEW) iget_failed(inode); diff --git a/fs/namei.c b/fs/namei.c index 58f715f7657e..768944691e24 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2922,7 +2922,13 @@ static struct dentry *__start_dirop(struct dentry *parent, struct qstr *name, } else { inode_lock_nested(dir, I_MUTEX_PARENT); } + pr_warn("DEBUG LOCK: __start_dirop locked dir=%px count=%ld owner=%px current=%px\n", + dir, atomic_long_read(&dir->i_rwsem.count), + READ_ONCE(dir->i_rwsem.owner), current); dentry = lookup_one_qstr_excl(name, parent, lookup_flags); + pr_warn("DEBUG LOCK: __start_dirop after lookup dir=%px count=%ld owner=%px current=%px dentry_err=%d\n", + dir, atomic_long_read(&dir->i_rwsem.count), + READ_ONCE(dir->i_rwsem.owner), current, IS_ERR(dentry)); if (IS_ERR(dentry)) inode_unlock(dir); return dentry; @@ -2944,6 +2950,11 @@ struct dentry *start_dirop(struct dentry *parent, struct qstr *name, void end_dirop(struct dentry *de) { if (!IS_ERR(de)) { + struct inode *dir = d_inode(de->d_parent); + pr_warn("DEBUG: end_dirop: de=%px parent=%px inode=%px rwsem count=%ld owner=%px current=%px\n", + de, de->d_parent, dir, + atomic_long_read(&dir->i_rwsem.count), + READ_ONCE(dir->i_rwsem.owner), current); inode_unlock(de->d_parent->d_inode); dput(de); } @@ -4922,7 +4933,9 @@ static struct dentry *filename_create(int dfd, struct filename *name, dentry = start_dirop(path->dentry, &last, reval_flag | create_flags); if (IS_ERR(dentry)) goto out_drop_write; - + pr_warn("DEBUG: after start_dirop: dentry=%px parent=%px parent_inode=%px rwsem owner=%px current=%px\n", + dentry, dentry->d_parent, d_inode(dentry->d_parent), + (void *)atomic_long_read(&d_inode(dentry->d_parent)->i_rwsem.count), current); if (unlikely(error)) goto fail; @@ -4959,7 +4972,10 @@ EXPORT_SYMBOL(start_creating_path); */ void end_creating_path(const struct path *path, struct dentry *dentry) { - end_creating(dentry); + if (!IS_ERR(dentry)) { + inode_unlock(d_inode(path->dentry)); + dput(dentry); + } mnt_drop_write(path->mnt); path_put(path); } @@ -5595,6 +5611,9 @@ int vfs_symlink(struct mnt_idmap *idmap, struct inode *dir, struct dentry *dentry, const char *oldname, struct delegated_inode *delegated_inode) { + pr_warn("DEBUG VFS: before symlink: dir=%px sb_type=%s symlink_fn=%ps rwsem owner=%px current=%px\n", + dir, dir->i_sb->s_type->name, dir->i_op->symlink, + READ_ONCE(dir->i_rwsem.owner), current); int error; error = may_create_dentry(idmap, dir, dentry); @@ -5613,6 +5632,9 @@ int vfs_symlink(struct mnt_idmap *idmap, struct inode *dir, return error; error = dir->i_op->symlink(idmap, dir, dentry, oldname); + pr_warn("DEBUG VFS: after symlink: dir=%px sb_type=%s error=%d rwsem owner=%px current=%px\n", + dir, dir->i_sb->s_type->name, error, + READ_ONCE(dir->i_rwsem.owner), current); if (!error) fsnotify_create(dir, dentry); return error; @@ -5639,6 +5661,10 @@ int filename_symlinkat(struct filename *from, int newdfd, struct filename *to) if (!error) error = vfs_symlink(mnt_idmap(path.mnt), path.dentry->d_inode, dentry, from->name, &delegated_inode); + pr_warn("DEBUG: after vfs_symlink: error=%d dentry=%px parent=%px parent_inode=%px rwsem owner=%px path_dentry=%px path_inode=%px\n", + error, dentry, dentry->d_parent, d_inode(dentry->d_parent), + (void *)atomic_long_read(&d_inode(path.dentry)->i_rwsem.count), + path.dentry, d_inode(path.dentry)); end_creating_path(&path, dentry); if (is_delegated(&delegated_inode)) { error = break_deleg_wait(&delegated_inode);