diff options
Diffstat (limited to 'fs')
36 files changed, 270 insertions, 189 deletions
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 734cbf8d9676..dd9f1bebb5a3 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -344,7 +344,7 @@ static int autofs_dev_ioctl_fail(struct file *fp, int status; token = (autofs_wqt_t) param->fail.token; - status = param->fail.status ? param->fail.status : -ENOENT; + status = param->fail.status < 0 ? param->fail.status : -ENOENT; return autofs4_wait_release(sbi, token, status); } diff --git a/fs/block_dev.c b/fs/block_dev.c index 519599dddd36..0a7404ef9335 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -263,7 +263,10 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, kfree(vecs); if (unlikely(bio.bi_error)) - return bio.bi_error; + ret = bio.bi_error; + + bio_uninit(&bio); + return ret; } diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c index 987044bca1c2..59cb307b15fb 100644 --- a/fs/ceph/acl.c +++ b/fs/ceph/acl.c @@ -131,6 +131,7 @@ int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type) } if (new_mode != old_mode) { + newattrs.ia_ctime = current_time(inode); newattrs.ia_mode = new_mode; newattrs.ia_valid = ATTR_MODE; ret = __ceph_setattr(inode, &newattrs); diff --git a/fs/ceph/export.c b/fs/ceph/export.c index e8f11fa565c5..7df550c13d7f 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -91,6 +91,10 @@ static struct dentry *__fh_to_dentry(struct super_block *sb, u64 ino) ceph_mdsc_put_request(req); if (!inode) return ERR_PTR(-ESTALE); + if (inode->i_nlink == 0) { + iput(inode); + return ERR_PTR(-ESTALE); + } } return d_obtain_alias(inode); diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index dcce79b84406..4de6cdddf059 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2022,7 +2022,6 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) attr->ia_size > inode->i_size) { i_size_write(inode, attr->ia_size); inode->i_blocks = calc_inode_blocks(attr->ia_size); - inode->i_ctime = attr->ia_ctime; ci->i_reported_size = attr->ia_size; dirtied |= CEPH_CAP_FILE_EXCL; } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || @@ -2044,7 +2043,6 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, only ? "ctime only" : "ignored"); - inode->i_ctime = attr->ia_ctime; if (only) { /* * if kernel wants to dirty ctime but nothing else, @@ -2067,7 +2065,7 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) if (dirtied) { inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, &prealloc_cf); - inode->i_ctime = current_time(inode); + inode->i_ctime = attr->ia_ctime; } release &= issued; @@ -2085,6 +2083,7 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) req->r_inode_drop = release; req->r_args.setattr.mask = cpu_to_le32(mask); req->r_num_caps = 1; + req->r_stamp = attr->ia_ctime; err = ceph_mdsc_do_request(mdsc, NULL, req); } dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index f38e56fa9712..0c05df44cc6c 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1687,7 +1687,6 @@ struct ceph_mds_request * ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode) { struct ceph_mds_request *req = kzalloc(sizeof(*req), GFP_NOFS); - struct timespec ts; if (!req) return ERR_PTR(-ENOMEM); @@ -1706,8 +1705,7 @@ ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode) init_completion(&req->r_safe_completion); INIT_LIST_HEAD(&req->r_unsafe_item); - ktime_get_real_ts(&ts); - req->r_stamp = timespec_trunc(ts, mdsc->fsc->sb->s_time_gran); + req->r_stamp = timespec_trunc(current_kernel_time(), mdsc->fsc->sb->s_time_gran); req->r_op = op; req->r_direct_mode = mode; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 0fd081bd2a2f..fcef70602b27 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3271,7 +3271,7 @@ ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to) if (!is_sync_kiocb(iocb)) ctx->iocb = iocb; - if (to->type & ITER_IOVEC) + if (to->type == ITER_IOVEC) ctx->should_dirty = true; rc = setup_aio_ctx_iter(ctx, to, READ); diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index b08531977daa..3b147dc6af63 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -810,7 +810,7 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw) if (!pages) { pages = vmalloc(max_pages * sizeof(struct page *)); - if (!bv) { + if (!pages) { kvfree(bv); return -ENOMEM; } diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index 27bc360c7ffd..a723df3e0197 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -849,8 +849,13 @@ cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *fid, __u16 search_flags, struct cifs_search_info *srch_inf) { - return CIFSFindFirst(xid, tcon, path, cifs_sb, - &fid->netfid, search_flags, srch_inf, true); + int rc; + + rc = CIFSFindFirst(xid, tcon, path, cifs_sb, + &fid->netfid, search_flags, srch_inf, true); + if (rc) + cifs_dbg(FYI, "find first failed=%d\n", rc); + return rc; } static int diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index c58691834eb2..7e48561abd29 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -982,7 +982,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); kfree(utf16_path); if (rc) { - cifs_dbg(VFS, "open dir failed\n"); + cifs_dbg(FYI, "open dir failed rc=%d\n", rc); return rc; } @@ -992,7 +992,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_query_directory(xid, tcon, fid->persistent_fid, fid->volatile_fid, 0, srch_inf); if (rc) { - cifs_dbg(VFS, "query directory failed\n"); + cifs_dbg(FYI, "query directory failed rc=%d\n", rc); SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); } return rc; @@ -1809,7 +1809,8 @@ crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc) sg = init_sg(rqst, sign); if (!sg) { - cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc); + cifs_dbg(VFS, "%s: Failed to init sg", __func__); + rc = -ENOMEM; goto free_req; } @@ -1817,6 +1818,7 @@ crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc) iv = kzalloc(iv_len, GFP_KERNEL); if (!iv) { cifs_dbg(VFS, "%s: Failed to alloc IV", __func__); + rc = -ENOMEM; goto free_sg; } iv[0] = 3; diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index 3cb5c9e2d4e7..de50e749ff05 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -188,8 +188,6 @@ static int cifs_creation_time_get(struct dentry *dentry, struct inode *inode, pcreatetime = (__u64 *)value; *pcreatetime = CIFS_I(inode)->createtime; return sizeof(__u64); - - return rc; } diff --git a/fs/configfs/item.c b/fs/configfs/item.c index 8b2a994042dd..a66f6624d899 100644 --- a/fs/configfs/item.c +++ b/fs/configfs/item.c @@ -138,6 +138,14 @@ struct config_item *config_item_get(struct config_item *item) } EXPORT_SYMBOL(config_item_get); +struct config_item *config_item_get_unless_zero(struct config_item *item) +{ + if (item && kref_get_unless_zero(&item->ci_kref)) + return item; + return NULL; +} +EXPORT_SYMBOL(config_item_get_unless_zero); + static void config_item_cleanup(struct config_item *item) { struct config_item_type *t = item->ci_type; diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c index a6ab012a2c6a..c8aabba502f6 100644 --- a/fs/configfs/symlink.c +++ b/fs/configfs/symlink.c @@ -83,14 +83,13 @@ static int create_link(struct config_item *parent_item, ret = -ENOMEM; sl = kmalloc(sizeof(struct configfs_symlink), GFP_KERNEL); if (sl) { - sl->sl_target = config_item_get(item); spin_lock(&configfs_dirent_lock); if (target_sd->s_type & CONFIGFS_USET_DROPPING) { spin_unlock(&configfs_dirent_lock); - config_item_put(item); kfree(sl); return -ENOENT; } + sl->sl_target = config_item_get(item); list_add(&sl->sl_list, &target_sd->s_links); spin_unlock(&configfs_dirent_lock); ret = configfs_create_link(sl, parent_item->ci_dentry, @@ -859,6 +859,7 @@ int dax_writeback_mapping_range(struct address_space *mapping, if (ret < 0) goto out; } + start_index = indices[pvec.nr - 1] + 1; } out: put_dax(dax_dev); diff --git a/fs/dcache.c b/fs/dcache.c index cddf39777835..a9f995f6859e 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -1494,7 +1494,7 @@ static void check_and_drop(void *_data) { struct detach_data *data = _data; - if (!data->mountpoint && !data->select.found) + if (!data->mountpoint && list_empty(&data->select.dispose)) __d_drop(data->select.start); } @@ -1536,17 +1536,15 @@ void d_invalidate(struct dentry *dentry) d_walk(dentry, &data, detach_and_collect, check_and_drop); - if (data.select.found) + if (!list_empty(&data.select.dispose)) shrink_dentry_list(&data.select.dispose); + else if (!data.mountpoint) + return; if (data.mountpoint) { detach_mounts(data.mountpoint); dput(data.mountpoint); } - - if (!data.mountpoint && !data.select.found) - break; - cond_resched(); } } diff --git a/fs/exec.c b/fs/exec.c index 72934df68471..904199086490 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -220,8 +220,26 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, if (write) { unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start; + unsigned long ptr_size; struct rlimit *rlim; + /* + * Since the stack will hold pointers to the strings, we + * must account for them as well. + * + * The size calculation is the entire vma while each arg page is + * built, so each time we get here it's calculating how far it + * is currently (rather than each call being just the newly + * added size from the arg page). As a result, we need to + * always add the entire size of the pointers, so that on the + * last call to get_arg_page() we'll actually have the entire + * correct size. + */ + ptr_size = (bprm->argc + bprm->envc) * sizeof(void *); + if (ptr_size > ULONG_MAX - size) + goto fail; + size += ptr_size; + acct_arg_size(bprm, size / PAGE_SIZE); /* @@ -239,13 +257,15 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, * to work from. */ rlim = current->signal->rlim; - if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur) / 4) { - put_page(page); - return NULL; - } + if (size > READ_ONCE(rlim[RLIMIT_STACK].rlim_cur) / 4) + goto fail; } return page; + +fail: + put_page(page); + return NULL; } static void put_arg_page(struct page *page) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index dde861387a40..d44f5456eb9b 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -200,7 +200,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, addr = ALIGN(addr, huge_page_size(h)); vma = find_vma(mm, addr); if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + (!vma || addr + len <= vm_start_gap(vma))) return addr; } diff --git a/fs/namespace.c b/fs/namespace.c index 8bd3e4d448b9..5a4438445bf7 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3488,6 +3488,8 @@ static int mntns_install(struct nsproxy *nsproxy, struct ns_common *ns) return err; } + put_mnt_ns(old_mnt_ns); + /* Update the pwd and root */ set_fs_pwd(fs, &root); set_fs_root(fs, &root); diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index c14758e08d73..390ac9c39c59 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -753,7 +753,6 @@ static void nfs4_callback_free_slot(struct nfs4_session *session, * A single slot, so highest used slotid is either 0 or -1 */ nfs4_free_slot(tbl, slot); - nfs4_slot_tbl_drain_complete(tbl); spin_unlock(&tbl->slot_tbl_lock); } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 32ccd7754f8a..2ac00bf4ecf1 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1946,29 +1946,6 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) } EXPORT_SYMBOL_GPL(nfs_link); -static void -nfs_complete_rename(struct rpc_task *task, struct nfs_renamedata *data) -{ - struct dentry *old_dentry = data->old_dentry; - struct dentry *new_dentry = data->new_dentry; - struct inode *old_inode = d_inode(old_dentry); - struct inode *new_inode = d_inode(new_dentry); - - nfs_mark_for_revalidate(old_inode); - - switch (task->tk_status) { - case 0: - if (new_inode != NULL) - nfs_drop_nlink(new_inode); - d_move(old_dentry, new_dentry); - nfs_set_verifier(new_dentry, - nfs_save_change_attribute(data->new_dir)); - break; - case -ENOENT: - nfs_dentry_handle_enoent(old_dentry); - } -} - /* * RENAME * FIXME: Some nfsds, like the Linux user space nfsd, may generate a @@ -1999,7 +1976,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, { struct inode *old_inode = d_inode(old_dentry); struct inode *new_inode = d_inode(new_dentry); - struct dentry *dentry = NULL; + struct dentry *dentry = NULL, *rehash = NULL; struct rpc_task *task; int error = -EBUSY; @@ -2022,8 +1999,10 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, * To prevent any new references to the target during the * rename, we unhash the dentry in advance. */ - if (!d_unhashed(new_dentry)) + if (!d_unhashed(new_dentry)) { d_drop(new_dentry); + rehash = new_dentry; + } if (d_count(new_dentry) > 2) { int err; @@ -2040,6 +2019,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, goto out; new_dentry = dentry; + rehash = NULL; new_inode = NULL; } } @@ -2048,8 +2028,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (new_inode != NULL) NFS_PROTO(new_inode)->return_delegation(new_inode); - task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, - nfs_complete_rename); + task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, NULL); if (IS_ERR(task)) { error = PTR_ERR(task); goto out; @@ -2059,9 +2038,27 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (error == 0) error = task->tk_status; rpc_put_task(task); + nfs_mark_for_revalidate(old_inode); out: + if (rehash) + d_rehash(rehash); trace_nfs_rename_exit(old_dir, old_dentry, new_dir, new_dentry, error); + if (!error) { + if (new_inode != NULL) + nfs_drop_nlink(new_inode); + /* + * The d_move() should be here instead of in an async RPC completion + * handler because we need the proper locks to move the dentry. If + * we're interrupted by a signal, the async RPC completion handler + * should mark the directories for revalidation. + */ + d_move(old_dentry, new_dentry); + nfs_set_verifier(new_dentry, + nfs_save_change_attribute(new_dir)); + } else if (error == -ENOENT) + nfs_dentry_handle_enoent(old_dentry); + /* new dentry created? */ if (dentry) dput(dentry); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index c08c46a3b8cd..dbfa18900e25 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2589,7 +2589,8 @@ static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, /* Except MODE, it seems harmless of setting twice. */ if (opendata->o_arg.createmode != NFS4_CREATE_EXCLUSIVE && - attrset[1] & FATTR4_WORD1_MODE) + (attrset[1] & FATTR4_WORD1_MODE || + attrset[2] & FATTR4_WORD2_MODE_UMASK)) sattr->ia_valid &= ~ATTR_MODE; if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) @@ -8416,6 +8417,7 @@ static void nfs4_layoutget_release(void *calldata) size_t max_pages = max_response_pages(server); dprintk("--> %s\n", __func__); + nfs4_sequence_free_slot(&lgp->res.seq_res); nfs4_free_pages(lgp->args.layout.pages, max_pages); pnfs_put_layout_hdr(NFS_I(inode)->layout); put_nfs_open_context(lgp->args.ctx); @@ -8490,7 +8492,6 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ if (status == 0 && lgp->res.layoutp->len) lseg = pnfs_layout_process(lgp); - nfs4_sequence_free_slot(&lgp->res.seq_res); rpc_put_task(task); dprintk("<-- %s status=%d\n", __func__, status); if (status) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index b34de036501b..cbf82b0d4467 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -2134,6 +2134,8 @@ again: put_rpccred(cred); switch (status) { case 0: + case -EINTR: + case -ERESTARTSYS: break; case -ETIMEDOUT: if (clnt->cl_softrtry) diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 3b7c937a36b5..4689940a953c 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -2591,6 +2591,10 @@ void ocfs2_inode_unlock_tracker(struct inode *inode, struct ocfs2_lock_res *lockres; lockres = &OCFS2_I(inode)->ip_inode_lockres; + /* had_lock means that the currect process already takes the cluster + * lock previously. If had_lock is 1, we have nothing to do here, and + * it will get unlocked where we got the lock. + */ if (!had_lock) { ocfs2_remove_holder(lockres, oh); ocfs2_inode_unlock(inode, ex); diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index 3c5384d9b3a5..f70c3778d600 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -1328,20 +1328,21 @@ static int ocfs2_xattr_get(struct inode *inode, void *buffer, size_t buffer_size) { - int ret; + int ret, had_lock; struct buffer_head *di_bh = NULL; + struct ocfs2_lock_holder oh; - ret = ocfs2_inode_lock(inode, &di_bh, 0); - if (ret < 0) { - mlog_errno(ret); - return ret; + had_lock = ocfs2_inode_lock_tracker(inode, &di_bh, 0, &oh); + if (had_lock < 0) { + mlog_errno(had_lock); + return had_lock; } down_read(&OCFS2_I(inode)->ip_xattr_sem); ret = ocfs2_xattr_get_nolock(inode, di_bh, name_index, name, buffer, buffer_size); up_read(&OCFS2_I(inode)->ip_xattr_sem); - ocfs2_inode_unlock(inode, 0); + ocfs2_inode_unlock_tracker(inode, 0, &oh, had_lock); brelse(di_bh); @@ -3537,11 +3538,12 @@ int ocfs2_xattr_set(struct inode *inode, { struct buffer_head *di_bh = NULL; struct ocfs2_dinode *di; - int ret, credits, ref_meta = 0, ref_credits = 0; + int ret, credits, had_lock, ref_meta = 0, ref_credits = 0; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct inode *tl_inode = osb->osb_tl_inode; struct ocfs2_xattr_set_ctxt ctxt = { NULL, NULL, NULL, }; struct ocfs2_refcount_tree *ref_tree = NULL; + struct ocfs2_lock_holder oh; struct ocfs2_xattr_info xi = { .xi_name_index = name_index, @@ -3572,8 +3574,9 @@ int ocfs2_xattr_set(struct inode *inode, return -ENOMEM; } - ret = ocfs2_inode_lock(inode, &di_bh, 1); - if (ret < 0) { + had_lock = ocfs2_inode_lock_tracker(inode, &di_bh, 1, &oh); + if (had_lock < 0) { + ret = had_lock; mlog_errno(ret); goto cleanup_nolock; } @@ -3670,7 +3673,7 @@ cleanup: if (ret) mlog_errno(ret); } - ocfs2_inode_unlock(inode, 1); + ocfs2_inode_unlock_tracker(inode, 1, &oh, had_lock); cleanup_nolock: brelse(di_bh); brelse(xbs.xattr_bh); diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index f0c8b33d99b1..520802da059c 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -300,11 +300,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) /* We don't show the stack guard page in /proc/maps */ start = vma->vm_start; - if (stack_guard_page_start(vma, start)) - start += PAGE_SIZE; end = vma->vm_end; - if (stack_guard_page_end(vma, end)) - end -= PAGE_SIZE; seq_setwidth(m, 25 + sizeof(void *) * 6 - 1); seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ", diff --git a/fs/read_write.c b/fs/read_write.c index 47c1d4484df9..19d4d88fa285 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1285,7 +1285,7 @@ static size_t compat_writev(struct file *file, if (!(file->f_mode & FMODE_CAN_WRITE)) goto out; - ret = compat_do_readv_writev(WRITE, file, vec, vlen, pos, 0); + ret = compat_do_readv_writev(WRITE, file, vec, vlen, pos, flags); out: if (ret > 0) diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index d642cc0a8271..f80be4c5df9d 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -400,10 +400,12 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, /* * There is not enough space for user on the device */ - if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) { - mutex_unlock(&UFS_SB(sb)->s_lock); - UFSD("EXIT (FAILED)\n"); - return 0; + if (unlikely(ufs_freefrags(uspi) <= uspi->s_root_blocks)) { + if (!capable(CAP_SYS_RESOURCE)) { + mutex_unlock(&UFS_SB(sb)->s_lock); + UFSD("EXIT (FAILED)\n"); + return 0; + } } if (goal >= uspi->s_size) @@ -421,12 +423,12 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, if (result) { ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); + *err = 0; write_seqlock(&UFS_I(inode)->meta_lock); ufs_cpu_to_data_ptr(sb, p, result); - write_sequnlock(&UFS_I(inode)->meta_lock); - *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); + write_sequnlock(&UFS_I(inode)->meta_lock); } mutex_unlock(&UFS_SB(sb)->s_lock); UFSD("EXIT, result %llu\n", (unsigned long long)result); @@ -439,8 +441,10 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, result = ufs_add_fragments(inode, tmp, oldcount, newcount); if (result) { *err = 0; + read_seqlock_excl(&UFS_I(inode)->meta_lock); UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); + read_sequnlock_excl(&UFS_I(inode)->meta_lock); ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); mutex_unlock(&UFS_SB(sb)->s_lock); @@ -451,39 +455,29 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, /* * allocate new block and move data */ - switch (fs32_to_cpu(sb, usb1->fs_optim)) { - case UFS_OPTSPACE: + if (fs32_to_cpu(sb, usb1->fs_optim) == UFS_OPTSPACE) { request = newcount; - if (uspi->s_minfree < 5 || uspi->cs_total.cs_nffree - > uspi->s_dsize * uspi->s_minfree / (2 * 100)) - break; - usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); - break; - default: - usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); - - case UFS_OPTTIME: + if (uspi->cs_total.cs_nffree < uspi->s_space_to_time) + usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); + } else { request = uspi->s_fpb; - if (uspi->cs_total.cs_nffree < uspi->s_dsize * - (uspi->s_minfree - 2) / 100) - break; - usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME); - break; + if (uspi->cs_total.cs_nffree > uspi->s_time_to_space) + usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE); } result = ufs_alloc_fragments (inode, cgno, goal, request, err); if (result) { ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); + mutex_unlock(&UFS_SB(sb)->s_lock); ufs_change_blocknr(inode, fragment - oldcount, oldcount, uspi->s_sbbase + tmp, uspi->s_sbbase + result, locked_page); + *err = 0; write_seqlock(&UFS_I(inode)->meta_lock); ufs_cpu_to_data_ptr(sb, p, result); - write_sequnlock(&UFS_I(inode)->meta_lock); - *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); - mutex_unlock(&UFS_SB(sb)->s_lock); + write_sequnlock(&UFS_I(inode)->meta_lock); if (newcount < request) ufs_free_fragments (inode, result + newcount, request - newcount); ufs_free_fragments (inode, tmp, oldcount); diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index da553ffec85b..f36d6a53687d 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -401,13 +401,20 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff u64 phys64 = 0; unsigned frag = fragment & uspi->s_fpbmask; - if (!create) { - phys64 = ufs_frag_map(inode, offsets, depth); - if (phys64) - map_bh(bh_result, sb, phys64 + frag); - return 0; - } + phys64 = ufs_frag_map(inode, offsets, depth); + if (!create) + goto done; + if (phys64) { + if (fragment >= UFS_NDIR_FRAGMENT) + goto done; + read_seqlock_excl(&UFS_I(inode)->meta_lock); + if (fragment < UFS_I(inode)->i_lastfrag) { + read_sequnlock_excl(&UFS_I(inode)->meta_lock); + goto done; + } + read_sequnlock_excl(&UFS_I(inode)->meta_lock); + } /* This code entered only while writing ....? */ mutex_lock(&UFS_I(inode)->truncate_mutex); @@ -451,6 +458,11 @@ out: } mutex_unlock(&UFS_I(inode)->truncate_mutex); return err; + +done: + if (phys64) + map_bh(bh_result, sb, phys64 + frag); + return 0; } static int ufs_writepage(struct page *page, struct writeback_control *wbc) @@ -554,10 +566,8 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) */ inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode); set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink)); - if (inode->i_nlink == 0) { - ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); - return -1; - } + if (inode->i_nlink == 0) + return -ESTALE; /* * Linux now has 32-bit uid and gid, so we can support EFT. @@ -566,9 +576,9 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode)); inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); - inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); - inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); - inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); + inode->i_atime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); + inode->i_ctime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); + inode->i_mtime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_nsec = 0; inode->i_ctime.tv_nsec = 0; @@ -602,10 +612,8 @@ static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) */ inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode); set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink)); - if (inode->i_nlink == 0) { - ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino); - return -1; - } + if (inode->i_nlink == 0) + return -ESTALE; /* * Linux now has 32-bit uid and gid, so we can support EFT. @@ -645,7 +653,7 @@ struct inode *ufs_iget(struct super_block *sb, unsigned long ino) struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; struct buffer_head * bh; struct inode *inode; - int err; + int err = -EIO; UFSD("ENTER, ino %lu\n", ino); @@ -680,9 +688,10 @@ struct inode *ufs_iget(struct super_block *sb, unsigned long ino) err = ufs1_read_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino)); } - + brelse(bh); if (err) goto bad_inode; + inode->i_version++; ufsi->i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift; @@ -691,15 +700,13 @@ struct inode *ufs_iget(struct super_block *sb, unsigned long ino) ufs_set_inode_ops(inode); - brelse(bh); - UFSD("EXIT\n"); unlock_new_inode(inode); return inode; bad_inode: iget_failed(inode); - return ERR_PTR(-EIO); + return ERR_PTR(err); } static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) @@ -874,7 +881,6 @@ static inline void free_data(struct to_free *ctx, u64 from, unsigned count) ctx->to = from + count; } -#define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) static void ufs_trunc_direct(struct inode *inode) @@ -1112,19 +1118,24 @@ static void ufs_truncate_blocks(struct inode *inode) struct super_block *sb = inode->i_sb; struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; unsigned offsets[4]; - int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); + int depth; int depth2; unsigned i; struct ufs_buffer_head *ubh[3]; void *p; u64 block; - if (!depth) - return; + if (inode->i_size) { + sector_t last = (inode->i_size - 1) >> uspi->s_bshift; + depth = ufs_block_to_path(inode, last, offsets); + if (!depth) + return; + } else { + depth = 1; + } - /* find the last non-zero in offsets[] */ for (depth2 = depth - 1; depth2; depth2--) - if (offsets[depth2]) + if (offsets[depth2] != uspi->s_apb - 1) break; mutex_lock(&ufsi->truncate_mutex); @@ -1133,9 +1144,8 @@ static void ufs_truncate_blocks(struct inode *inode) offsets[0] = UFS_IND_BLOCK; } else { /* get the blocks that should be partially emptied */ - p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]); + p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]++); for (i = 0; i < depth2; i++) { - offsets[i]++; /* next branch is fully freed */ block = ufs_data_ptr_to_cpu(sb, p); if (!block) break; @@ -1146,7 +1156,7 @@ static void ufs_truncate_blocks(struct inode *inode) write_sequnlock(&ufsi->meta_lock); break; } - p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]); + p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]++); } while (i--) free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); @@ -1161,7 +1171,9 @@ static void ufs_truncate_blocks(struct inode *inode) free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); } } + read_seqlock_excl(&ufsi->meta_lock); ufsi->i_lastfrag = DIRECT_FRAGMENT; + read_sequnlock_excl(&ufsi->meta_lock); mark_inode_dirty(inode); mutex_unlock(&ufsi->truncate_mutex); } diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 878cc6264f1a..0a4f58a5073c 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -480,7 +480,7 @@ static void ufs_setup_cstotal(struct super_block *sb) usb3 = ubh_get_usb_third(uspi); if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && - (usb1->fs_flags & UFS_FLAGS_UPDATED)) || + (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) || mtype == UFS_MOUNT_UFSTYPE_UFS2) { /*we have statistic in different place, then usual*/ uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); @@ -596,9 +596,7 @@ static void ufs_put_cstotal(struct super_block *sb) usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); - if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && - (usb1->fs_flags & UFS_FLAGS_UPDATED)) || - mtype == UFS_MOUNT_UFSTYPE_UFS2) { + if (mtype == UFS_MOUNT_UFSTYPE_UFS2) { /*we have statistic in different place, then usual*/ usb2->fs_un.fs_u2.cs_ndir = cpu_to_fs64(sb, uspi->cs_total.cs_ndir); @@ -608,16 +606,26 @@ static void ufs_put_cstotal(struct super_block *sb) cpu_to_fs64(sb, uspi->cs_total.cs_nifree); usb3->fs_un1.fs_u2.cs_nffree = cpu_to_fs64(sb, uspi->cs_total.cs_nffree); - } else { - usb1->fs_cstotal.cs_ndir = - cpu_to_fs32(sb, uspi->cs_total.cs_ndir); - usb1->fs_cstotal.cs_nbfree = - cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); - usb1->fs_cstotal.cs_nifree = - cpu_to_fs32(sb, uspi->cs_total.cs_nifree); - usb1->fs_cstotal.cs_nffree = - cpu_to_fs32(sb, uspi->cs_total.cs_nffree); + goto out; + } + + if (mtype == UFS_MOUNT_UFSTYPE_44BSD && + (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) { + /* store stats in both old and new places */ + usb2->fs_un.fs_u2.cs_ndir = + cpu_to_fs64(sb, uspi->cs_total.cs_ndir); + usb2->fs_un.fs_u2.cs_nbfree = + cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); + usb3->fs_un1.fs_u2.cs_nifree = + cpu_to_fs64(sb, uspi->cs_total.cs_nifree); + usb3->fs_un1.fs_u2.cs_nffree = + cpu_to_fs64(sb, uspi->cs_total.cs_nffree); } + usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir); + usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); + usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree); + usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree); +out: ubh_mark_buffer_dirty(USPI_UBH(uspi)); ufs_print_super_stuff(sb, usb1, usb2, usb3); UFSD("EXIT\n"); @@ -996,6 +1004,13 @@ again: flags |= UFS_ST_SUN; } + if ((flags & UFS_ST_MASK) == UFS_ST_44BSD && + uspi->s_postblformat == UFS_42POSTBLFMT) { + if (!silent) + pr_err("this is not a 44bsd filesystem"); + goto failed; + } + /* * Check ufs magic number */ @@ -1143,8 +1158,8 @@ magic_found: uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { - uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); - uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); + uspi->s_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); + uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); } else { uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); @@ -1193,6 +1208,18 @@ magic_found: uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); + uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize, + uspi->s_minfree, 100); + if (uspi->s_minfree <= 5) { + uspi->s_time_to_space = ~0ULL; + uspi->s_space_to_time = 0; + usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE); + } else { + uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1; + uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize, + uspi->s_minfree - 2, 100) - 1; + } + /* * Compute another frequently used values */ @@ -1382,19 +1409,17 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) mutex_lock(&UFS_SB(sb)->s_lock); usb3 = ubh_get_usb_third(uspi); - if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { + if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) buf->f_type = UFS2_MAGIC; - buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); - } else { + else buf->f_type = UFS_MAGIC; - buf->f_blocks = uspi->s_dsize; - } - buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + - uspi->cs_total.cs_nffree; + + buf->f_blocks = uspi->s_dsize; + buf->f_bfree = ufs_freefrags(uspi); buf->f_ffree = uspi->cs_total.cs_nifree; buf->f_bsize = sb->s_blocksize; - buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) - ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; + buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks) + ? (buf->f_bfree - uspi->s_root_blocks) : 0; buf->f_files = uspi->s_ncg * uspi->s_ipg; buf->f_namelen = UFS_MAXNAMLEN; buf->f_fsid.val[0] = (u32)id; diff --git a/fs/ufs/ufs_fs.h b/fs/ufs/ufs_fs.h index 0cbd5d340b67..150eef6f1233 100644 --- a/fs/ufs/ufs_fs.h +++ b/fs/ufs/ufs_fs.h @@ -733,10 +733,8 @@ struct ufs_sb_private_info { __u32 s_dblkno; /* offset of first data after cg */ __u32 s_cgoffset; /* cylinder group offset in cylinder */ __u32 s_cgmask; /* used to calc mod fs_ntrak */ - __u32 s_size; /* number of blocks (fragments) in fs */ - __u32 s_dsize; /* number of data blocks in fs */ - __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */ - __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */ + __u64 s_size; /* number of blocks (fragments) in fs */ + __u64 s_dsize; /* number of data blocks in fs */ __u32 s_ncg; /* number of cylinder groups */ __u32 s_bsize; /* size of basic blocks */ __u32 s_fsize; /* size of fragments */ @@ -793,6 +791,9 @@ struct ufs_sb_private_info { __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ __s32 fs_magic; /* filesystem magic */ unsigned int s_dirblksize; + __u64 s_root_blocks; + __u64 s_time_to_space; + __u64 s_space_to_time; }; /* diff --git a/fs/ufs/util.c b/fs/ufs/util.c index f41ad0a6106f..02497a492eb2 100644 --- a/fs/ufs/util.c +++ b/fs/ufs/util.c @@ -243,9 +243,8 @@ ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev struct page *ufs_get_locked_page(struct address_space *mapping, pgoff_t index) { - struct page *page; - - page = find_lock_page(mapping, index); + struct inode *inode = mapping->host; + struct page *page = find_lock_page(mapping, index); if (!page) { page = read_mapping_page(mapping, index, NULL); @@ -253,7 +252,7 @@ struct page *ufs_get_locked_page(struct address_space *mapping, printk(KERN_ERR "ufs_change_blocknr: " "read_mapping_page error: ino %lu, index: %lu\n", mapping->host->i_ino, index); - goto out; + return page; } lock_page(page); @@ -262,8 +261,7 @@ struct page *ufs_get_locked_page(struct address_space *mapping, /* Truncate got there first */ unlock_page(page); put_page(page); - page = NULL; - goto out; + return NULL; } if (!PageUptodate(page) || PageError(page)) { @@ -272,11 +270,12 @@ struct page *ufs_get_locked_page(struct address_space *mapping, printk(KERN_ERR "ufs_change_blocknr: " "can not read page: ino %lu, index: %lu\n", - mapping->host->i_ino, index); + inode->i_ino, index); - page = ERR_PTR(-EIO); + return ERR_PTR(-EIO); } } -out: + if (!page_has_buffers(page)) + create_empty_buffers(page, 1 << inode->i_blkbits, 0); return page; } diff --git a/fs/ufs/util.h b/fs/ufs/util.h index 398019fb1448..9fc7119a1551 100644 --- a/fs/ufs/util.h +++ b/fs/ufs/util.h @@ -350,16 +350,11 @@ static inline void *ubh_get_data_ptr(struct ufs_sb_private_info *uspi, #define ubh_blkmap(ubh,begin,bit) \ ((*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) >> ((bit) & 7)) & (0xff >> (UFS_MAXFRAG - uspi->s_fpb))) -/* - * Determine the number of available frags given a - * percentage to hold in reserve. - */ static inline u64 -ufs_freespace(struct ufs_sb_private_info *uspi, int percentreserved) +ufs_freefrags(struct ufs_sb_private_info *uspi) { return ufs_blkstofrags(uspi->cs_total.cs_nbfree) + - uspi->cs_total.cs_nffree - - (uspi->s_dsize * (percentreserved) / 100); + uspi->cs_total.cs_nffree; } /* diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index f7555fc25877..1d622f276e3a 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -340,9 +340,28 @@ int handle_userfault(struct vm_fault *vmf, unsigned long reason) bool must_wait, return_to_userland; long blocking_state; - BUG_ON(!rwsem_is_locked(&mm->mmap_sem)); - ret = VM_FAULT_SIGBUS; + + /* + * We don't do userfault handling for the final child pid update. + * + * We also don't do userfault handling during + * coredumping. hugetlbfs has the special + * follow_hugetlb_page() to skip missing pages in the + * FOLL_DUMP case, anon memory also checks for FOLL_DUMP with + * the no_page_table() helper in follow_page_mask(), but the + * shmem_vm_ops->fault method is invoked even during + * coredumping without mmap_sem and it ends up here. + */ + if (current->flags & (PF_EXITING|PF_DUMPCORE)) + goto out; + + /* + * Coredumping runs without mmap_sem so we can only check that + * the mmap_sem is held, if PF_DUMPCORE was not set. + */ + WARN_ON_ONCE(!rwsem_is_locked(&mm->mmap_sem)); + ctx = vmf->vma->vm_userfaultfd_ctx.ctx; if (!ctx) goto out; @@ -361,12 +380,6 @@ int handle_userfault(struct vm_fault *vmf, unsigned long reason) goto out; /* - * We don't do userfault handling for the final child pid update. - */ - if (current->flags & PF_EXITING) - goto out; - - /* * Check that we can return VM_FAULT_RETRY. * * NOTE: it should become possible to return VM_FAULT_RETRY diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 09af0f7cd55e..3b91faacc1ba 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1316,9 +1316,12 @@ xfs_vm_bmap( * The swap code (ab-)uses ->bmap to get a block mapping and then * bypasseѕ the file system for actual I/O. We really can't allow * that on reflinks inodes, so we have to skip out here. And yes, - * 0 is the magic code for a bmap error.. + * 0 is the magic code for a bmap error. + * + * Since we don't pass back blockdev info, we can't return bmap + * information for rt files either. */ - if (xfs_is_reflink_inode(ip)) + if (xfs_is_reflink_inode(ip) || XFS_IS_REALTIME_INODE(ip)) return 0; filemap_write_and_wait(mapping); diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 07b77b73b024..16d6a578fc16 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -117,7 +117,7 @@ static inline void __xfs_buf_ioacct_dec( struct xfs_buf *bp) { - ASSERT(spin_is_locked(&bp->b_lock)); + lockdep_assert_held(&bp->b_lock); if (bp->b_state & XFS_BSTATE_IN_FLIGHT) { bp->b_state &= ~XFS_BSTATE_IN_FLIGHT; diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index f61c84f8e31a..990210fcb9c3 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -66,7 +66,6 @@ xfs_inode_alloc( XFS_STATS_INC(mp, vn_active); ASSERT(atomic_read(&ip->i_pincount) == 0); - ASSERT(!spin_is_locked(&ip->i_flags_lock)); ASSERT(!xfs_isiflocked(ip)); ASSERT(ip->i_ino == 0); @@ -190,7 +189,7 @@ xfs_perag_set_reclaim_tag( { struct xfs_mount *mp = pag->pag_mount; - ASSERT(spin_is_locked(&pag->pag_ici_lock)); + lockdep_assert_held(&pag->pag_ici_lock); if (pag->pag_ici_reclaimable++) return; @@ -212,7 +211,7 @@ xfs_perag_clear_reclaim_tag( { struct xfs_mount *mp = pag->pag_mount; - ASSERT(spin_is_locked(&pag->pag_ici_lock)); + lockdep_assert_held(&pag->pag_ici_lock); if (--pag->pag_ici_reclaimable) return; |