diff options
Diffstat (limited to 'fs')
45 files changed, 140 insertions, 299 deletions
diff --git a/fs/9p/fid.h b/fs/9p/fid.h index 2b6787fcb626..12700df0bb51 100644 --- a/fs/9p/fid.h +++ b/fs/9p/fid.h @@ -24,6 +24,10 @@ #include <linux/list.h> struct p9_fid *v9fs_fid_lookup(struct dentry *dentry); +static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry) +{ + return v9fs_fid_lookup(dentry->d_parent); +} struct p9_fid *v9fs_fid_clone(struct dentry *dentry); void v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid); struct p9_fid *v9fs_writeback_fid(struct dentry *dentry); diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index c37fb9c08970..6181ad79e1a5 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -231,7 +231,6 @@ static int v9fs_launder_page(struct page *page) /** * v9fs_direct_IO - 9P address space operation for direct I/O * @iocb: target I/O control block - * @pos: offset in file to begin the operation * * The presence of v9fs_direct_IO() in the address space ops vector * allowes open() O_DIRECT flags which would have failed otherwise. diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index e2e7c749925a..7da9a8354fad 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -595,7 +595,7 @@ static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) v9ses = v9fs_inode2v9ses(dir); inode = d_inode(dentry); - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { retval = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); @@ -653,7 +653,7 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, ofid = NULL; fid = NULL; name = (char *) dentry->d_name.name; - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -798,7 +798,7 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, v9ses = v9fs_inode2v9ses(dir); /* We can walk d_parent because we hold the dir->i_mutex */ - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) return ERR_CAST(dfid); @@ -975,13 +975,13 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (IS_ERR(oldfid)) return PTR_ERR(oldfid); - olddirfid = v9fs_fid_clone(old_dentry->d_parent); + olddirfid = v9fs_parent_fid(old_dentry); if (IS_ERR(olddirfid)) { retval = PTR_ERR(olddirfid); goto done; } - newdirfid = v9fs_fid_clone(new_dentry->d_parent); + newdirfid = v9fs_parent_fid(new_dentry); if (IS_ERR(newdirfid)) { retval = PTR_ERR(newdirfid); goto clunk_olddir; diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 1b51eaa5e2dd..2ed04c2fe7af 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -273,7 +273,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n", name, flags, omode); - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -389,7 +389,6 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, umode_t mode; struct inode *inode; struct p9_qid qid; - struct dentry *dir_dentry; struct posix_acl *dacl = NULL, *pacl = NULL; p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); @@ -400,8 +399,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, if (dir->i_mode & S_ISGID) omode |= S_ISGID; - dir_dentry = dentry->d_parent; - dfid = v9fs_fid_lookup(dir_dentry); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -691,7 +689,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname); v9ses = v9fs_inode2v9ses(dir); - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -762,7 +760,6 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { int err; - struct dentry *dir_dentry; struct p9_fid *dfid, *oldfid; struct v9fs_session_info *v9ses; @@ -770,8 +767,7 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, dir->i_ino, old_dentry, dentry); v9ses = v9fs_inode2v9ses(dir); - dir_dentry = dentry->d_parent; - dfid = v9fs_fid_lookup(dir_dentry); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) return PTR_ERR(dfid); @@ -822,7 +818,6 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, struct p9_fid *fid = NULL, *dfid = NULL; struct inode *inode; struct p9_qid qid; - struct dentry *dir_dentry; struct posix_acl *dacl = NULL, *pacl = NULL; p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n", @@ -830,8 +825,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, MAJOR(rdev), MINOR(rdev)); v9ses = v9fs_inode2v9ses(dir); - dir_dentry = dentry->d_parent; - dfid = v9fs_fid_lookup(dir_dentry); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 3a3ced779fc7..5417516f6e59 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -637,13 +637,12 @@ static ssize_t bm_entry_write(struct file *file, const char __user *buffer, break; case 3: /* Delete this handler. */ - root = dget(file->f_path.dentry->d_sb->s_root); + root = file_inode(file)->i_sb->s_root; inode_lock(d_inode(root)); kill_node(e); inode_unlock(d_inode(root)); - dput(root); break; default: return res; @@ -665,8 +664,8 @@ static ssize_t bm_register_write(struct file *file, const char __user *buffer, { Node *e; struct inode *inode; - struct dentry *root, *dentry; - struct super_block *sb = file->f_path.dentry->d_sb; + struct super_block *sb = file_inode(file)->i_sb; + struct dentry *root = sb->s_root, *dentry; int err = 0; e = create_entry(buffer, count); @@ -674,7 +673,6 @@ static ssize_t bm_register_write(struct file *file, const char __user *buffer, if (IS_ERR(e)) return PTR_ERR(e); - root = dget(sb->s_root); inode_lock(d_inode(root)); dentry = lookup_one_len(e->name, root, strlen(e->name)); err = PTR_ERR(dentry); @@ -712,7 +710,6 @@ out2: dput(dentry); out: inode_unlock(d_inode(root)); - dput(root); if (err) { kfree(e); @@ -753,14 +750,13 @@ static ssize_t bm_status_write(struct file *file, const char __user *buffer, break; case 3: /* Delete all handlers. */ - root = dget(file->f_path.dentry->d_sb->s_root); + root = file_inode(file)->i_sb->s_root; inode_lock(d_inode(root)); while (!list_empty(&entries)) kill_node(list_entry(entries.next, Node, list)); inode_unlock(d_inode(root)); - dput(root); break; default: return res; diff --git a/fs/block_dev.c b/fs/block_dev.c index d012be4ab977..5cbd5391667e 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -614,7 +614,6 @@ static void init_once(void *foo) memset(bdev, 0, sizeof(*bdev)); mutex_init(&bdev->bd_mutex); - INIT_LIST_HEAD(&bdev->bd_inodes); INIT_LIST_HEAD(&bdev->bd_list); #ifdef CONFIG_SYSFS INIT_LIST_HEAD(&bdev->bd_holder_disks); @@ -624,24 +623,13 @@ static void init_once(void *foo) mutex_init(&bdev->bd_fsfreeze_mutex); } -static inline void __bd_forget(struct inode *inode) -{ - list_del_init(&inode->i_devices); - inode->i_bdev = NULL; - inode->i_mapping = &inode->i_data; -} - static void bdev_evict_inode(struct inode *inode) { struct block_device *bdev = &BDEV_I(inode)->bdev; - struct list_head *p; truncate_inode_pages_final(&inode->i_data); invalidate_inode_buffers(inode); /* is it needed here? */ clear_inode(inode); spin_lock(&bdev_lock); - while ( (p = bdev->bd_inodes.next) != &bdev->bd_inodes ) { - __bd_forget(list_entry(p, struct inode, i_devices)); - } list_del_init(&bdev->bd_list); spin_unlock(&bdev_lock); } @@ -805,7 +793,6 @@ static struct block_device *bd_acquire(struct inode *inode) bdgrab(bdev); inode->i_bdev = bdev; inode->i_mapping = bdev->bd_inode->i_mapping; - list_add(&inode->i_devices, &bdev->bd_inodes); } spin_unlock(&bdev_lock); } @@ -821,7 +808,8 @@ void bd_forget(struct inode *inode) spin_lock(&bdev_lock); if (!sb_is_blkdev_sb(inode->i_sb)) bdev = inode->i_bdev; - __bd_forget(inode); + inode->i_bdev = NULL; + inode->i_mapping = &inode->i_data; spin_unlock(&bdev_lock); if (bdev) diff --git a/fs/cachefiles/proc.c b/fs/cachefiles/proc.c index eccd33941199..125b90f6c796 100644 --- a/fs/cachefiles/proc.c +++ b/fs/cachefiles/proc.c @@ -93,7 +93,6 @@ static int cachefiles_histogram_open(struct inode *inode, struct file *file) } static const struct file_operations cachefiles_histogram_fops = { - .owner = THIS_MODULE, .open = cachefiles_histogram_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index 788e19195991..6c58e13fed2f 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -244,7 +244,6 @@ static int cifs_debug_data_proc_open(struct inode *inode, struct file *file) } static const struct file_operations cifs_debug_data_proc_fops = { - .owner = THIS_MODULE, .open = cifs_debug_data_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -361,7 +360,6 @@ static int cifs_stats_proc_open(struct inode *inode, struct file *file) } static const struct file_operations cifs_stats_proc_fops = { - .owner = THIS_MODULE, .open = cifs_stats_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -447,7 +445,6 @@ static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, } static const struct file_operations cifsFYI_proc_fops = { - .owner = THIS_MODULE, .open = cifsFYI_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -479,7 +476,6 @@ static ssize_t cifs_linux_ext_proc_write(struct file *file, } static const struct file_operations cifs_linux_ext_proc_fops = { - .owner = THIS_MODULE, .open = cifs_linux_ext_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -511,7 +507,6 @@ static ssize_t cifs_lookup_cache_proc_write(struct file *file, } static const struct file_operations cifs_lookup_cache_proc_fops = { - .owner = THIS_MODULE, .open = cifs_lookup_cache_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -543,7 +538,6 @@ static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, } static const struct file_operations traceSMB_proc_fops = { - .owner = THIS_MODULE, .open = traceSMB_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -655,7 +649,6 @@ static ssize_t cifs_security_flags_proc_write(struct file *file, } static const struct file_operations cifs_security_flags_proc_fops = { - .owner = THIS_MODULE, .open = cifs_security_flags_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c index f36a4040afb8..b0b9cda41928 100644 --- a/fs/coda/pioctl.c +++ b/fs/coda/pioctl.c @@ -35,7 +35,6 @@ const struct inode_operations coda_ioctl_inode_operations = { }; const struct file_operations coda_ioctl_operations = { - .owner = THIS_MODULE, .unlocked_ioctl = coda_pioctl, .llseek = noop_llseek, }; diff --git a/fs/dcache.c b/fs/dcache.c index 24bf27d66f6e..b90cf8e09d5b 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -224,10 +224,9 @@ static inline int dentry_string_cmp(const unsigned char *cs, const unsigned char static inline int dentry_cmp(const struct dentry *dentry, const unsigned char *ct, unsigned tcount) { - const unsigned char *cs; /* * Be careful about RCU walk racing with rename: - * use ACCESS_ONCE to fetch the name pointer. + * use 'lockless_dereference' to fetch the name pointer. * * NOTE! Even if a rename will mean that the length * was not loaded atomically, we don't care. The @@ -241,8 +240,8 @@ static inline int dentry_cmp(const struct dentry *dentry, const unsigned char *c * early because the data cannot match (there can * be no NUL in the ct/tcount data) */ - cs = ACCESS_ONCE(dentry->d_name.name); - smp_read_barrier_depends(); + const unsigned char *cs = lockless_dereference(dentry->d_name.name); + return dentry_string_cmp(cs, ct, tcount); } @@ -333,44 +332,21 @@ static inline void dentry_rcuwalk_invalidate(struct dentry *dentry) /* * Release the dentry's inode, using the filesystem - * d_iput() operation if defined. Dentry has no refcount - * and is unhashed. - */ -static void dentry_iput(struct dentry * dentry) - __releases(dentry->d_lock) - __releases(dentry->d_inode->i_lock) -{ - struct inode *inode = dentry->d_inode; - if (inode) { - __d_clear_type_and_inode(dentry); - hlist_del_init(&dentry->d_u.d_alias); - spin_unlock(&dentry->d_lock); - spin_unlock(&inode->i_lock); - if (!inode->i_nlink) - fsnotify_inoderemove(inode); - if (dentry->d_op && dentry->d_op->d_iput) - dentry->d_op->d_iput(dentry, inode); - else - iput(inode); - } else { - spin_unlock(&dentry->d_lock); - } -} - -/* - * Release the dentry's inode, using the filesystem - * d_iput() operation if defined. dentry remains in-use. + * d_iput() operation if defined. */ static void dentry_unlink_inode(struct dentry * dentry) __releases(dentry->d_lock) __releases(dentry->d_inode->i_lock) { struct inode *inode = dentry->d_inode; + bool hashed = !d_unhashed(dentry); - raw_write_seqcount_begin(&dentry->d_seq); + if (hashed) + raw_write_seqcount_begin(&dentry->d_seq); __d_clear_type_and_inode(dentry); hlist_del_init(&dentry->d_u.d_alias); - raw_write_seqcount_end(&dentry->d_seq); + if (hashed) + raw_write_seqcount_end(&dentry->d_seq); spin_unlock(&dentry->d_lock); spin_unlock(&inode->i_lock); if (!inode->i_nlink) @@ -571,12 +547,10 @@ static void __dentry_kill(struct dentry *dentry) dentry_unlist(dentry, parent); if (parent) spin_unlock(&parent->d_lock); - dentry_iput(dentry); - /* - * dentry_iput drops the locks, at which point nobody (except - * transient RCU lookups) can reach this dentry. - */ - BUG_ON(dentry->d_lockref.count > 0); + if (dentry->d_inode) + dentry_unlink_inode(dentry); + else + spin_unlock(&dentry->d_lock); this_cpu_dec(nr_dentry); if (dentry->d_op && dentry->d_op->d_release) dentry->d_op->d_release(dentry); @@ -620,7 +594,6 @@ static struct dentry *dentry_kill(struct dentry *dentry) failed: spin_unlock(&dentry->d_lock); - cpu_relax(); return dentry; /* try again with same dentry */ } @@ -794,6 +767,8 @@ void dput(struct dentry *dentry) return; repeat: + might_sleep(); + rcu_read_lock(); if (likely(fast_dput(dentry))) { rcu_read_unlock(); @@ -827,8 +802,10 @@ repeat: kill_it: dentry = dentry_kill(dentry); - if (dentry) + if (dentry) { + cond_resched(); goto repeat; + } } EXPORT_SYMBOL(dput); @@ -1593,6 +1570,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name) { struct dentry *dentry; char *dname; + int err; dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL); if (!dentry) @@ -1651,6 +1629,16 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name) INIT_LIST_HEAD(&dentry->d_child); d_set_d_op(dentry, dentry->d_sb->s_d_op); + if (dentry->d_op && dentry->d_op->d_init) { + err = dentry->d_op->d_init(dentry); + if (err) { + if (dname_external(dentry)) + kfree(external_name(dentry)); + kmem_cache_free(dentry_cache, dentry); + return NULL; + } + } + this_cpu_inc(nr_dentry); return dentry; @@ -1727,7 +1715,6 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op) DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE | DCACHE_OP_DELETE | - DCACHE_OP_SELECT_INODE | DCACHE_OP_REAL)); dentry->d_op = op; if (!op) @@ -1744,8 +1731,6 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op) dentry->d_flags |= DCACHE_OP_DELETE; if (op->d_prune) dentry->d_flags |= DCACHE_OP_PRUNE; - if (op->d_select_inode) - dentry->d_flags |= DCACHE_OP_SELECT_INODE; if (op->d_real) dentry->d_flags |= DCACHE_OP_REAL; @@ -1813,7 +1798,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode) raw_write_seqcount_begin(&dentry->d_seq); __d_set_inode_and_type(dentry, inode, add_flags); raw_write_seqcount_end(&dentry->d_seq); - __fsnotify_d_instantiate(dentry); + fsnotify_update_flags(dentry); spin_unlock(&dentry->d_lock); } @@ -2065,42 +2050,19 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, } EXPORT_SYMBOL(d_add_ci); -/* - * Do the slow-case of the dentry name compare. - * - * Unlike the dentry_cmp() function, we need to atomically - * load the name and length information, so that the - * filesystem can rely on them, and can use the 'name' and - * 'len' information without worrying about walking off the - * end of memory etc. - * - * Thus the read_seqcount_retry() and the "duplicate" info - * in arguments (the low-level filesystem should not look - * at the dentry inode or name contents directly, since - * rename can change them while we're in RCU mode). - */ -enum slow_d_compare { - D_COMP_OK, - D_COMP_NOMATCH, - D_COMP_SEQRETRY, -}; -static noinline enum slow_d_compare slow_dentry_cmp( - const struct dentry *parent, - struct dentry *dentry, - unsigned int seq, - const struct qstr *name) +static inline bool d_same_name(const struct dentry *dentry, + const struct dentry *parent, + const struct qstr *name) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - - if (read_seqcount_retry(&dentry->d_seq, seq)) { - cpu_relax(); - return D_COMP_SEQRETRY; + if (likely(!(parent->d_flags & DCACHE_OP_COMPARE))) { + if (dentry->d_name.len != name->len) + return false; + return dentry_cmp(dentry, name->name, name->len) == 0; } - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - return D_COMP_NOMATCH; - return D_COMP_OK; + return parent->d_op->d_compare(parent, dentry, + dentry->d_name.len, dentry->d_name.name, + name) == 0; } /** @@ -2179,6 +2141,9 @@ seqretry: * dentry compare, we will do seqretries until it is stable, * and if we end up with a successful lookup, we actually * want to exit RCU lookup anyway. + * + * Note that raw_seqcount_begin still *does* smp_rmb(), so + * we are still guaranteed NUL-termination of ->d_name.name. */ seq = raw_seqcount_begin(&dentry->d_seq); if (dentry->d_parent != parent) @@ -2187,24 +2152,28 @@ seqretry: continue; if (unlikely(parent->d_flags & DCACHE_OP_COMPARE)) { + int tlen; + const char *tname; if (dentry->d_name.hash != hashlen_hash(hashlen)) continue; - *seqp = seq; - switch (slow_dentry_cmp(parent, dentry, seq, name)) { - case D_COMP_OK: - return dentry; - case D_COMP_NOMATCH: - continue; - default: + tlen = dentry->d_name.len; + tname = dentry->d_name.name; + /* we want a consistent (name,len) pair */ + if (read_seqcount_retry(&dentry->d_seq, seq)) { + cpu_relax(); goto seqretry; } + if (parent->d_op->d_compare(parent, dentry, + tlen, tname, name) != 0) + continue; + } else { + if (dentry->d_name.hash_len != hashlen) + continue; + if (dentry_cmp(dentry, str, hashlen_len(hashlen)) != 0) + continue; } - - if (dentry->d_name.hash_len != hashlen) - continue; *seqp = seq; - if (!dentry_cmp(dentry, str, hashlen_len(hashlen))) - return dentry; + return dentry; } return NULL; } @@ -2252,9 +2221,7 @@ EXPORT_SYMBOL(d_lookup); */ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name) { - unsigned int len = name->len; unsigned int hash = name->hash; - const unsigned char *str = name->name; struct hlist_bl_head *b = d_hash(hash); struct hlist_bl_node *node; struct dentry *found = NULL; @@ -2293,21 +2260,8 @@ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name) if (d_unhashed(dentry)) goto next; - /* - * It is safe to compare names since d_move() cannot - * change the qstr (protected by d_lock). - */ - if (parent->d_flags & DCACHE_OP_COMPARE) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - goto next; - } else { - if (dentry->d_name.len != len) - goto next; - if (dentry_cmp(dentry, str, len)) - goto next; - } + if (!d_same_name(dentry, parent, name)) + goto next; dentry->d_lockref.count++; found = dentry; @@ -2460,9 +2414,7 @@ struct dentry *d_alloc_parallel(struct dentry *parent, const struct qstr *name, wait_queue_head_t *wq) { - unsigned int len = name->len; unsigned int hash = name->hash; - const unsigned char *str = name->name; struct hlist_bl_head *b = in_lookup_hash(parent, hash); struct hlist_bl_node *node; struct dentry *new = d_alloc(parent, name); @@ -2513,17 +2465,8 @@ retry: continue; if (dentry->d_parent != parent) continue; - if (parent->d_flags & DCACHE_OP_COMPARE) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - continue; - } else { - if (dentry->d_name.len != len) - continue; - if (dentry_cmp(dentry, str, len)) - continue; - } + if (!d_same_name(dentry, parent, name)) + continue; hlist_bl_unlock(b); /* now we can try to grab a reference */ if (!lockref_get_not_dead(&dentry->d_lockref)) { @@ -2550,17 +2493,8 @@ retry: goto mismatch; if (unlikely(d_unhashed(dentry))) goto mismatch; - if (parent->d_flags & DCACHE_OP_COMPARE) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - goto mismatch; - } else { - if (unlikely(dentry->d_name.len != len)) - goto mismatch; - if (unlikely(dentry_cmp(dentry, str, len))) - goto mismatch; - } + if (unlikely(!d_same_name(dentry, parent, name))) + goto mismatch; /* OK, it *is* a hashed match; return it */ spin_unlock(&dentry->d_lock); dput(new); @@ -2613,7 +2547,7 @@ static inline void __d_add(struct dentry *dentry, struct inode *inode) raw_write_seqcount_begin(&dentry->d_seq); __d_set_inode_and_type(dentry, inode, add_flags); raw_write_seqcount_end(&dentry->d_seq); - __fsnotify_d_instantiate(dentry); + fsnotify_update_flags(dentry); } _d_rehash(dentry); if (dir) @@ -2656,8 +2590,6 @@ EXPORT_SYMBOL(d_add); struct dentry *d_exact_alias(struct dentry *entry, struct inode *inode) { struct dentry *alias; - int len = entry->d_name.len; - const char *name = entry->d_name.name; unsigned int hash = entry->d_name.hash; spin_lock(&inode->i_lock); @@ -2671,9 +2603,7 @@ struct dentry *d_exact_alias(struct dentry *entry, struct inode *inode) continue; if (alias->d_parent != entry->d_parent) continue; - if (alias->d_name.len != len) - continue; - if (dentry_cmp(alias, name, len)) + if (!d_same_name(alias, entry->d_parent, &entry->d_name)) continue; spin_lock(&alias->d_lock); if (!d_unhashed(alias)) { @@ -2903,8 +2833,8 @@ static void __d_move(struct dentry *dentry, struct dentry *target, list_move(&target->d_child, &target->d_parent->d_subdirs); list_move(&dentry->d_child, &dentry->d_parent->d_subdirs); if (exchange) - fsnotify_d_move(target); - fsnotify_d_move(dentry); + fsnotify_update_flags(target); + fsnotify_update_flags(dentry); } write_seqcount_end(&target->d_seq); diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 4bc1f68243c1..72361baf9da7 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -621,9 +621,6 @@ void debugfs_remove(struct dentry *dentry) return; parent = dentry->d_parent; - if (!parent || d_really_is_negative(parent)) - return; - inode_lock(d_inode(parent)); ret = __debugfs_remove(dentry, parent); inode_unlock(d_inode(parent)); @@ -654,10 +651,6 @@ void debugfs_remove_recursive(struct dentry *dentry) if (IS_ERR_OR_NULL(dentry)) return; - parent = dentry->d_parent; - if (!parent || d_really_is_negative(parent)) - return; - parent = dentry; down: inode_lock(d_inode(parent)); diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 11562161e24a..f418f55c2bbe 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2350,7 +2350,6 @@ static int ext4_mb_seq_groups_open(struct inode *inode, struct file *file) } const struct file_operations ext4_seq_mb_groups_fops = { - .owner = THIS_MODULE, .open = ext4_mb_seq_groups_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c index 1420a3c614af..73bcfd41f5f2 100644 --- a/fs/ext4/sysfs.c +++ b/fs/ext4/sysfs.c @@ -359,7 +359,6 @@ static int name##_open(struct inode *inode, struct file *file) \ } \ \ static const struct file_operations ext4_seq_##name##_fops = { \ - .owner = THIS_MODULE, \ .open = name##_open, \ .read = seq_read, \ .llseek = seq_lseek, \ diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b97c065cbe74..1b86d3f638ef 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -961,7 +961,6 @@ static int _name##_open_fs(struct inode *inode, struct file *file) \ } \ \ static const struct file_operations f2fs_seq_##_name##_fops = { \ - .owner = THIS_MODULE, \ .open = _name##_open_fs, \ .read = seq_read, \ .llseek = seq_lseek, \ diff --git a/fs/fscache/histogram.c b/fs/fscache/histogram.c index 7d637e2335fd..15a3d042247e 100644 --- a/fs/fscache/histogram.c +++ b/fs/fscache/histogram.c @@ -99,7 +99,6 @@ static int fscache_histogram_open(struct inode *inode, struct file *file) } const struct file_operations fscache_histogram_fops = { - .owner = THIS_MODULE, .open = fscache_histogram_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c index 6b028b7c4250..5d5ddaa84b21 100644 --- a/fs/fscache/object-list.c +++ b/fs/fscache/object-list.c @@ -404,7 +404,6 @@ static int fscache_objlist_release(struct inode *inode, struct file *file) } const struct file_operations fscache_objlist_fops = { - .owner = THIS_MODULE, .open = fscache_objlist_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c index 7cfa0aacdf6d..7ac6e839b065 100644 --- a/fs/fscache/stats.c +++ b/fs/fscache/stats.c @@ -295,7 +295,6 @@ static int fscache_stats_open(struct inode *inode, struct file *file) } const struct file_operations fscache_stats_fops = { - .owner = THIS_MODULE, .open = fscache_stats_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 8eed66af5b82..02a3845363f7 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -128,7 +128,7 @@ static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - struct inode *inode = file_inode(file)->i_mapping->host; + struct inode *inode = mapping->host; size_t count = iov_iter_count(iter); ssize_t ret; diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index ef9fefe364a6..19462d773fe2 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -126,7 +126,7 @@ static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - struct inode *inode = file_inode(file)->i_mapping->host; + struct inode *inode = mapping->host; size_t count = iov_iter_count(iter); ssize_t ret; diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c index 2ce5b75ee9a5..44af14b2e916 100644 --- a/fs/isofs/compress.c +++ b/fs/isofs/compress.c @@ -361,7 +361,6 @@ static int zisofs_readpage(struct file *file, struct page *page) const struct address_space_operations zisofs_aops = { .readpage = zisofs_readpage, - /* No sync_page operation supported? */ /* No bmap operation supported */ }; diff --git a/fs/jfs/jfs_debug.c b/fs/jfs/jfs_debug.c index dd824d9b0b1a..a37eb5f8cbc0 100644 --- a/fs/jfs/jfs_debug.c +++ b/fs/jfs/jfs_debug.c @@ -58,7 +58,6 @@ static ssize_t jfs_loglevel_proc_write(struct file *file, } static const struct file_operations jfs_loglevel_proc_fops = { - .owner = THIS_MODULE, .open = jfs_loglevel_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index a74752146ec9..a21ea8b3e5fa 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -2517,7 +2517,6 @@ static int jfs_lmstats_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_lmstats_proc_fops = { - .owner = THIS_MODULE, .open = jfs_lmstats_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c index e7fa9e513040..489aaa1403e5 100644 --- a/fs/jfs/jfs_metapage.c +++ b/fs/jfs/jfs_metapage.c @@ -830,7 +830,6 @@ static int jfs_mpstat_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_mpstat_proc_fops = { - .owner = THIS_MODULE, .open = jfs_mpstat_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c index eddf2b6eda85..2e58978d6f45 100644 --- a/fs/jfs/jfs_txnmgr.c +++ b/fs/jfs/jfs_txnmgr.c @@ -3040,7 +3040,6 @@ static int jfs_txanchor_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_txanchor_proc_fops = { - .owner = THIS_MODULE, .open = jfs_txanchor_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -3081,7 +3080,6 @@ static int jfs_txstats_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_txstats_proc_fops = { - .owner = THIS_MODULE, .open = jfs_txstats_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_xtree.c b/fs/jfs/jfs_xtree.c index 5ad7748860ce..5cde6d2fcfca 100644 --- a/fs/jfs/jfs_xtree.c +++ b/fs/jfs/jfs_xtree.c @@ -3894,7 +3894,6 @@ static int jfs_xtstat_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_xtstat_proc_fops = { - .owner = THIS_MODULE, .open = jfs_xtstat_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/lockd/procfs.c b/fs/lockd/procfs.c index 2a0a98480e39..8f72cb237ef3 100644 --- a/fs/lockd/procfs.c +++ b/fs/lockd/procfs.c @@ -64,7 +64,6 @@ static const struct file_operations lockd_end_grace_operations = { .read = nlm_end_grace_read, .llseek = default_llseek, .release = simple_transaction_release, - .owner = THIS_MODULE, }; int __init diff --git a/fs/namei.c b/fs/namei.c index 7cb9be3e200a..ecb0b439747e 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1449,9 +1449,8 @@ static int follow_dotdot(struct nameidata *nd) } /* - * This looks up the name in dcache, possibly revalidates the old dentry and - * allocates a new one if not found or not valid. In the need_lookup argument - * returns whether i_op->lookup is necessary. + * This looks up the name in dcache and possibly revalidates the found dentry. + * NULL is returned if the dentry does not exist in the cache. */ static struct dentry *lookup_dcache(const struct qstr *name, struct dentry *dir, @@ -4336,7 +4335,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, * Check source == target. * On overlayfs need to look at underlying inodes. */ - if (vfs_select_inode(old_dentry, 0) == vfs_select_inode(new_dentry, 0)) + if (d_real_inode(old_dentry) == d_real_inode(new_dentry)) return 0; error = may_delete(old_dir, old_dentry, is_dir); diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 0c96528db94a..487c5607d52f 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1102,7 +1102,6 @@ static const struct file_operations nfs_server_list_fops = { .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, - .owner = THIS_MODULE, }; static int nfs_volume_list_open(struct inode *inode, struct file *file); @@ -1123,7 +1122,6 @@ static const struct file_operations nfs_volume_list_fops = { .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, - .owner = THIS_MODULE, }; /* diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 411375f3c585..baaa38859899 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -734,7 +734,7 @@ struct page *get_cache_page(nfs_readdir_descriptor_t *desc) struct page *page; for (;;) { - page = read_cache_page(file_inode(desc->file)->i_mapping, + page = read_cache_page(desc->file->f_mapping, desc->page_index, (filler_t *)nfs_readdir_filler, desc); if (IS_ERR(page) || grab_page(page)) break; @@ -1397,19 +1397,18 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in if (IS_ERR(label)) goto out; - /* Protect against concurrent sillydeletes */ trace_nfs_lookup_enter(dir, dentry, flags); error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label); if (error == -ENOENT) goto no_entry; if (error < 0) { res = ERR_PTR(error); - goto out_unblock_sillyrename; + goto out_label; } inode = nfs_fhget(dentry->d_sb, fhandle, fattr, label); res = ERR_CAST(inode); if (IS_ERR(res)) - goto out_unblock_sillyrename; + goto out_label; /* Success: notify readdir to use READDIRPLUS */ nfs_advise_use_readdirplus(dir); @@ -1418,11 +1417,11 @@ no_entry: res = d_splice_alias(inode, dentry); if (res != NULL) { if (IS_ERR(res)) - goto out_unblock_sillyrename; + goto out_label; dentry = res; } nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); -out_unblock_sillyrename: +out_label: trace_nfs_lookup_exit(dir, dentry, flags, error); nfs4_label_free(label); out: diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index c7326c2af2c3..e6210ead71d0 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -244,9 +244,7 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, /** * nfs_direct_IO - NFS address space operation for direct I/O * @iocb: target I/O control block - * @iov: array of vectors that define I/O buffer - * @pos: offset in file to begin the operation - * @nr_segs: size of iovec array + * @iter: I/O buffer * * The presence of this routine in the address space ops vector means * the NFS client supports direct I/O. However, for most direct IO, we diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 9690cb4dd588..e7787777620e 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -158,7 +158,6 @@ static const struct file_operations exports_proc_operations = { .read = seq_read, .llseek = seq_lseek, .release = seq_release, - .owner = THIS_MODULE, }; static int exports_nfsd_open(struct inode *inode, struct file *file) @@ -171,7 +170,6 @@ static const struct file_operations exports_nfsd_operations = { .read = seq_read, .llseek = seq_lseek, .release = seq_release, - .owner = THIS_MODULE, }; static int export_features_show(struct seq_file *m, void *v) @@ -217,7 +215,6 @@ static const struct file_operations pool_stats_operations = { .read = seq_read, .llseek = seq_lseek, .release = nfsd_pool_stats_release, - .owner = THIS_MODULE, }; static struct file_operations reply_cache_stats_operations = { diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c index cd90878a76aa..d97338bb6a39 100644 --- a/fs/nfsd/stats.c +++ b/fs/nfsd/stats.c @@ -84,7 +84,6 @@ static int nfsd_proc_open(struct inode *inode, struct file *file) } static const struct file_operations nfsd_proc_fops = { - .owner = THIS_MODULE, .open = nfsd_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index f40972d6df90..e01287c964a8 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -1854,7 +1854,7 @@ int ntfs_read_inode_mount(struct inode *vi) /* Need this to sanity check attribute list references to $MFT. */ vi->i_generation = ni->seq_no = le16_to_cpu(m->sequence_number); - /* Provides readpage() and sync_page() for map_mft_record(). */ + /* Provides readpage() for map_mft_record(). */ vi->i_mapping->a_ops = &ntfs_mst_aops; ctx = ntfs_attr_get_search_ctx(ni, m); diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index e97a37179614..af2adfcb0f6f 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -2426,7 +2426,7 @@ static int ocfs2_dio_end_io(struct kiocb *iocb, static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; - struct inode *inode = file_inode(file)->i_mapping->host; + struct inode *inode = file->f_mapping->host; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); get_block_t *get_block; diff --git a/fs/open.c b/fs/open.c index 93ae3cdee4ab..bf66cf1a9f5c 100644 --- a/fs/open.c +++ b/fs/open.c @@ -840,13 +840,13 @@ EXPORT_SYMBOL(file_path); int vfs_open(const struct path *path, struct file *file, const struct cred *cred) { - struct inode *inode = vfs_select_inode(path->dentry, file->f_flags); + struct dentry *dentry = d_real(path->dentry, NULL, file->f_flags); - if (IS_ERR(inode)) - return PTR_ERR(inode); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); file->f_path = *path; - return do_dentry_open(file, inode, NULL, cred); + return do_dentry_open(file, d_backing_inode(dentry), NULL, cred); } struct file *dentry_open(const struct path *path, int flags, diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c index 8f2fa94cc4f6..2e63e6d0a68e 100644 --- a/fs/orangefs/inode.c +++ b/fs/orangefs/inode.c @@ -291,7 +291,7 @@ int orangefs_permission(struct inode *inode, int mask) } /* ORANGEDS2 implementation of VFS inode operations for files */ -struct inode_operations orangefs_file_inode_operations = { +const struct inode_operations orangefs_file_inode_operations = { .get_acl = orangefs_get_acl, .set_acl = orangefs_set_acl, .setattr = orangefs_setattr, diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c index 5a60c508af4e..7e8dfa97c44a 100644 --- a/fs/orangefs/namei.c +++ b/fs/orangefs/namei.c @@ -405,12 +405,8 @@ static int orangefs_rename(struct inode *old_dir, int ret; gossip_debug(GOSSIP_NAME_DEBUG, - "orangefs_rename: called (%s/%s => %s/%s) ct=%d\n", - old_dentry->d_parent->d_name.name, - old_dentry->d_name.name, - new_dentry->d_parent->d_name.name, - new_dentry->d_name.name, - d_count(new_dentry)); + "orangefs_rename: called (%pd2 => %pd2) ct=%d\n", + old_dentry, new_dentry, d_count(new_dentry)); new_op = op_alloc(ORANGEFS_VFS_OP_RENAME); if (!new_op) @@ -442,7 +438,7 @@ static int orangefs_rename(struct inode *old_dir, } /* ORANGEFS implementation of VFS inode operations for directories */ -struct inode_operations orangefs_dir_inode_operations = { +const struct inode_operations orangefs_dir_inode_operations = { .lookup = orangefs_lookup, .get_acl = orangefs_get_acl, .set_acl = orangefs_set_acl, diff --git a/fs/orangefs/orangefs-kernel.h b/fs/orangefs/orangefs-kernel.h index c1181e5529af..4b6e132d5a0f 100644 --- a/fs/orangefs/orangefs-kernel.h +++ b/fs/orangefs/orangefs-kernel.h @@ -557,10 +557,10 @@ extern int hash_table_size; extern const struct address_space_operations orangefs_address_operations; extern struct backing_dev_info orangefs_backing_dev_info; -extern struct inode_operations orangefs_file_inode_operations; +extern const struct inode_operations orangefs_file_inode_operations; extern const struct file_operations orangefs_file_operations; -extern struct inode_operations orangefs_symlink_inode_operations; -extern struct inode_operations orangefs_dir_inode_operations; +extern const struct inode_operations orangefs_symlink_inode_operations; +extern const struct inode_operations orangefs_dir_inode_operations; extern const struct file_operations orangefs_dir_operations; extern const struct dentry_operations orangefs_dentry_operations; extern const struct file_operations orangefs_devreq_file_operations; diff --git a/fs/orangefs/symlink.c b/fs/orangefs/symlink.c index 6418dd638680..8fecf823f5ba 100644 --- a/fs/orangefs/symlink.c +++ b/fs/orangefs/symlink.c @@ -8,7 +8,7 @@ #include "orangefs-kernel.h" #include "orangefs-bufmap.h" -struct inode_operations orangefs_symlink_inode_operations = { +const struct inode_operations orangefs_symlink_inode_operations = { .readlink = generic_readlink, .get_link = simple_get_link, .setattr = orangefs_setattr, diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index d1cdc60dd68f..d554e86abbe3 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -351,36 +351,25 @@ static bool ovl_open_need_copy_up(int flags, enum ovl_path_type type, return true; } -struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags) +int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags) { - int err; + int err = 0; struct path realpath; enum ovl_path_type type; - if (d_is_dir(dentry)) - return d_backing_inode(dentry); - type = ovl_path_real(dentry, &realpath); if (ovl_open_need_copy_up(file_flags, type, realpath.dentry)) { err = ovl_want_write(dentry); - if (err) - return ERR_PTR(err); - - if (file_flags & O_TRUNC) - err = ovl_copy_up_truncate(dentry); - else - err = ovl_copy_up(dentry); - ovl_drop_write(dentry); - if (err) - return ERR_PTR(err); - - ovl_path_upper(dentry, &realpath); + if (!err) { + if (file_flags & O_TRUNC) + err = ovl_copy_up_truncate(dentry); + else + err = ovl_copy_up(dentry); + ovl_drop_write(dentry); + } } - if (realpath.dentry->d_flags & DCACHE_OP_SELECT_INODE) - return realpath.dentry->d_op->d_select_inode(realpath.dentry, file_flags); - - return d_backing_inode(realpath.dentry); + return err; } static const struct inode_operations ovl_file_inode_operations = { diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index cfbca53590d0..0d3f2ad45708 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -179,7 +179,7 @@ ssize_t ovl_getxattr(struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size); ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size); int ovl_removexattr(struct dentry *dentry, const char *name); -struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags); +int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags); struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, struct ovl_entry *oe); diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 9a7693d5f8ff..5e254b3a8c56 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -304,7 +304,9 @@ static void ovl_dentry_release(struct dentry *dentry) } } -static struct dentry *ovl_d_real(struct dentry *dentry, struct inode *inode) +static struct dentry *ovl_d_real(struct dentry *dentry, + const struct inode *inode, + unsigned int open_flags) { struct dentry *real; @@ -314,6 +316,16 @@ static struct dentry *ovl_d_real(struct dentry *dentry, struct inode *inode) goto bug; } + if (d_is_negative(dentry)) + return dentry; + + if (open_flags) { + int err = ovl_open_maybe_copy_up(dentry, open_flags); + + if (err) + return ERR_PTR(err); + } + real = ovl_dentry_upper(dentry); if (real && (!inode || inode == d_inode(real))) return real; @@ -326,9 +338,7 @@ static struct dentry *ovl_d_real(struct dentry *dentry, struct inode *inode) return real; /* Handle recursion */ - if (real->d_flags & DCACHE_OP_REAL) - return real->d_op->d_real(real, inode); - + return d_real(real, inode, open_flags); bug: WARN(1, "ovl_d_real(%pd4, %s:%lu\n): real dentry not found\n", dentry, inode ? inode->i_sb->s_id : "NULL", inode ? inode->i_ino : 0); @@ -378,13 +388,11 @@ static int ovl_dentry_weak_revalidate(struct dentry *dentry, unsigned int flags) static const struct dentry_operations ovl_dentry_operations = { .d_release = ovl_dentry_release, - .d_select_inode = ovl_d_select_inode, .d_real = ovl_d_real, }; static const struct dentry_operations ovl_reval_dentry_operations = { .d_release = ovl_dentry_release, - .d_select_inode = ovl_d_select_inode, .d_real = ovl_d_real, .d_revalidate = ovl_dentry_revalidate, .d_weak_revalidate = ovl_dentry_weak_revalidate, diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 4a0e48f92104..ad40b64c5e2f 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -541,9 +541,6 @@ void tracefs_remove(struct dentry *dentry) return; parent = dentry->d_parent; - if (!parent || !parent->d_inode) - return; - inode_lock(parent->d_inode); ret = __tracefs_remove(dentry, parent); inode_unlock(parent->d_inode); @@ -566,10 +563,6 @@ void tracefs_remove_recursive(struct dentry *dentry) if (IS_ERR_OR_NULL(dentry)) return; - parent = dentry->d_parent; - if (!parent || !parent->d_inode) - return; - parent = dentry; down: inode_lock(parent->d_inode); diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c index 57dcceda17d6..fa3bda1a860f 100644 --- a/fs/ufs/dir.c +++ b/fs/ufs/dir.c @@ -279,12 +279,6 @@ struct ufs_dir_entry *ufs_find_entry(struct inode *dir, const struct qstr *qstr, de = (struct ufs_dir_entry *) kaddr; kaddr += ufs_last_byte(dir, n) - reclen; while ((char *) de <= kaddr) { - if (de->d_reclen == 0) { - ufs_error(dir->i_sb, __func__, - "zero-length directory entry"); - ufs_put_page(page); - goto out; - } if (ufs_match(sb, namelen, name, de)) goto found; de = ufs_next_entry(sb, de); @@ -414,11 +408,8 @@ ufs_validate_entry(struct super_block *sb, char *base, { struct ufs_dir_entry *de = (struct ufs_dir_entry*)(base + offset); struct ufs_dir_entry *p = (struct ufs_dir_entry*)(base + (offset&mask)); - while ((char*)p < (char*)de) { - if (p->d_reclen == 0) - break; + while ((char*)p < (char*)de) p = ufs_next_entry(sb, p); - } return (char *)p - base; } @@ -469,12 +460,6 @@ ufs_readdir(struct file *file, struct dir_context *ctx) de = (struct ufs_dir_entry *)(kaddr+offset); limit = kaddr + ufs_last_byte(inode, n) - UFS_DIR_REC_LEN(1); for ( ;(char*)de <= limit; de = ufs_next_entry(sb, de)) { - if (de->d_reclen == 0) { - ufs_error(sb, __func__, - "zero-length directory entry"); - ufs_put_page(page); - return -EIO; - } if (de->d_ino) { unsigned char d_type = DT_UNKNOWN; diff --git a/fs/xfs/xfs_stats.c b/fs/xfs/xfs_stats.c index 8686df6c7609..d266e835ecc3 100644 --- a/fs/xfs/xfs_stats.c +++ b/fs/xfs/xfs_stats.c @@ -128,7 +128,6 @@ static int xqm_proc_open(struct inode *inode, struct file *file) } static const struct file_operations xqm_proc_fops = { - .owner = THIS_MODULE, .open = xqm_proc_open, .read = seq_read, .llseek = seq_lseek, |