From: Sage Weil Date: Tue, 24 May 2011 20:06:06 +0000 (-0700) Subject: vfs: push dentry_unhash on rmdir into file systems X-Git-Tag: v3.0-rc1~141^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=79bf7c732b5ff75b96022ed9d29181afd3d2509c;p=platform%2Fkernel%2Flinux-stable.git vfs: push dentry_unhash on rmdir into file systems Only a few file systems need this. Start by pushing it down into each fs rmdir method (except gfs2 and xfs) so it can be dealt with on a per-fs basis. This does not change behavior for any in-tree file systems. Acked-by: Christoph Hellwig Signed-off-by: Sage Weil Signed-off-by: Al Viro --- diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 7f6c677..ecd7717 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -814,6 +814,7 @@ int v9fs_vfs_unlink(struct inode *i, struct dentry *d) int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) { + dentry_unhash(d); return v9fs_remove(i, d, 1); } diff --git a/fs/affs/namei.c b/fs/affs/namei.c index e3e9efc..d087153 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -320,6 +320,8 @@ affs_rmdir(struct inode *dir, struct dentry *dentry) dentry->d_inode->i_ino, (int)dentry->d_name.len, dentry->d_name.name); + dentry_unhash(dentry); + return affs_remove_header(dentry); } diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 20c106f..9a7f414 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -845,6 +845,8 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry) _enter("{%x:%u},{%s}", dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name); + dentry_unhash(dentry); + ret = -ENAMETOOLONG; if (dentry->d_name.len >= AFSNAMEMAX) goto error; diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c index f55ae23..87d95a8 100644 --- a/fs/autofs4/root.c +++ b/fs/autofs4/root.c @@ -583,6 +583,8 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry) if (!autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN)) return -EACCES; + dentry_unhash(dentry); + if (atomic_dec_and_test(&ino->count)) { p_ino = autofs4_dentry_ino(dentry->d_parent); if (p_ino && dentry->d_parent != dentry) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 7cd8ab0..c692dad 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3062,6 +3062,8 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) return -ENOTEMPTY; + dentry_unhash(dentry); + trans = __unlink_start_trans(dir, dentry); if (IS_ERR(trans)) return PTR_ERR(trans); diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 1a867a3..d2e5490 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -827,6 +827,9 @@ static int ceph_unlink(struct inode *dir, struct dentry *dentry) int err = -EROFS; int op; + if ((dentry->d_inode->i_mode & S_IFMT) == S_IFDIR) + dentry_unhash(dentry); + if (ceph_snap(dir) == CEPH_SNAPDIR) { /* rmdir .snap/foo is RMSNAP */ dout("rmsnap dir %p '%.*s' dn %p\n", dir, dentry->d_name.len, diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 8852470..cee5896 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1461,6 +1461,8 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) cFYI(1, "cifs_rmdir, inode = 0x%p", inode); + dentry_unhash(direntry); + xid = GetXid(); full_path = build_path_from_dentry(direntry); diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 2b8dae4..9f72b75 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -336,6 +336,8 @@ static int coda_rmdir(struct inode *dir, struct dentry *de) int len = de->d_name.len; int error; + dentry_unhash(de); + error = venus_rmdir(dir->i_sb, coda_i2f(dir), name, len); if (!error) { /* VFS may delete the child */ diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index 3313dd1..9908c20 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -1355,6 +1355,8 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry) struct module *subsys_owner = NULL, *dead_item_owner = NULL; int ret; + dentry_unhash(dentry); + if (dentry->d_parent == configfs_sb->s_root) return -EPERM; diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 4d4cc6a..c88612f 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -521,6 +521,8 @@ static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry) struct dentry *lower_dir_dentry; int rc; + dentry_unhash(dentry); + lower_dentry = ecryptfs_dentry_to_lower(dentry); dget(dentry); lower_dir_dentry = lock_parent(lower_dentry); diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c index 4d70db1..0697175 100644 --- a/fs/exofs/namei.c +++ b/fs/exofs/namei.c @@ -227,6 +227,8 @@ static int exofs_rmdir(struct inode *dir, struct dentry *dentry) struct inode *inode = dentry->d_inode; int err = -ENOTEMPTY; + dentry_unhash(dentry); + if (exofs_empty_dir(inode)) { err = exofs_unlink(dir, dentry); if (!err) { diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index ed5c5d4..7a5ad97 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -296,6 +296,8 @@ static int ext2_rmdir (struct inode * dir, struct dentry *dentry) struct inode * inode = dentry->d_inode; int err = -ENOTEMPTY; + dentry_unhash(dentry); + if (ext2_empty_dir(inode)) { err = ext2_unlink(dir, dentry); if (!err) { diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index 32f3b86..552f94d 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c @@ -2074,6 +2074,8 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry) struct ext3_dir_entry_2 * de; handle_t *handle; + dentry_unhash(dentry); + /* Initialize quotas before so that eventual writes go in * separate transaction */ dquot_initialize(dir); diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 67fd0b0..957580d 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2123,6 +2123,8 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) struct ext4_dir_entry_2 *de; handle_t *handle; + dentry_unhash(dentry); + /* Initialize quotas before so that eventual writes go in * separate transaction */ dquot_initialize(dir); diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index 7114990..0c25cea 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -326,6 +326,8 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry) struct fat_slot_info sinfo; int err; + dentry_unhash(dentry); + lock_super(sb); /* * Check whether the directory is not in use, then check diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index adae3fb..d7b9383 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -824,6 +824,8 @@ static int vfat_rmdir(struct inode *dir, struct dentry *dentry) struct fat_slot_info sinfo; int err; + dentry_unhash(dentry); + lock_super(sb); err = fat_dir_empty(inode); diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index c6ba49b..40d5c2a 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -667,6 +667,8 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry) if (IS_ERR(req)) return PTR_ERR(req); + dentry_unhash(entry); + req->in.h.opcode = FUSE_RMDIR; req->in.h.nodeid = get_node_id(dir); req->in.numargs = 1; diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c index b4d70b1..616cfe0 100644 --- a/fs/hfs/dir.c +++ b/fs/hfs/dir.c @@ -253,6 +253,9 @@ static int hfs_remove(struct inode *dir, struct dentry *dentry) struct inode *inode = dentry->d_inode; int res; + if (S_ISDIR(inode->i_mode)) + dentry_unhash(dentry); + if (S_ISDIR(inode->i_mode) && inode->i_size != 2) return -ENOTEMPTY; res = hfs_cat_delete(inode->i_ino, dir, &dentry->d_name); diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 4df5059..23451a9 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -370,6 +370,8 @@ static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry) struct inode *inode = dentry->d_inode; int res; + dentry_unhash(dentry); + if (inode->i_size != 2) return -ENOTEMPTY; diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 2638c834e..73ea3ba 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -683,6 +683,8 @@ int hostfs_rmdir(struct inode *ino, struct dentry *dentry) char *file; int err; + dentry_unhash(dentry); + if ((file = dentry_name(dentry)) == NULL) return -ENOMEM; err = do_rmdir(file); diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index b1c72a9..b9fe158 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -461,6 +461,8 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry) int err; int r; + dentry_unhash(dentry); + hpfs_adjust_length(name, &len); hpfs_lock(dir->i_sb); mutex_lock(&hpfs_i(inode)->i_parent_mutex); diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index 82faddd..727d644 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -609,6 +609,8 @@ static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry) int ret; uint32_t now = get_seconds(); + dentry_unhash(dentry); + for (fd = f->dents ; fd; fd = fd->next) { if (fd->ino) return -ENOTEMPTY; diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index eaaf2b5..0569dac 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -360,6 +360,8 @@ static int jfs_rmdir(struct inode *dip, struct dentry *dentry) jfs_info("jfs_rmdir: dip:0x%p name:%s", dip, dentry->d_name.name); + dentry_unhash(dentry); + /* Init inode for quota operations. */ dquot_initialize(dip); dquot_initialize(ip); diff --git a/fs/libfs.c b/fs/libfs.c index c88eab5..1e2ba5a 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -311,6 +311,8 @@ int simple_rmdir(struct inode *dir, struct dentry *dentry) if (!simple_empty(dentry)) return -ENOTEMPTY; + dentry_unhash(dentry); + drop_nlink(dentry->d_inode); simple_unlink(dir, dentry); drop_nlink(dir); diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c index 9ed89d1..2b32734 100644 --- a/fs/logfs/dir.c +++ b/fs/logfs/dir.c @@ -273,6 +273,8 @@ static int logfs_rmdir(struct inode *dir, struct dentry *dentry) { struct inode *inode = dentry->d_inode; + dentry_unhash(dentry); + if (!logfs_empty_dir(inode)) return -ENOTEMPTY; diff --git a/fs/minix/namei.c b/fs/minix/namei.c index 6e6777f..091626f 100644 --- a/fs/minix/namei.c +++ b/fs/minix/namei.c @@ -168,6 +168,8 @@ static int minix_rmdir(struct inode * dir, struct dentry *dentry) struct inode * inode = dentry->d_inode; int err = -ENOTEMPTY; + dentry_unhash(dentry); + if (minix_empty_dir(inode)) { err = minix_unlink(dir, dentry); if (!err) { diff --git a/fs/namei.c b/fs/namei.c index 8d11187..596edb5 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2568,7 +2568,6 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry) else { error = security_inode_rmdir(dir, dentry); if (!error) { - dentry_unhash(dentry); error = dir->i_op->rmdir(dir, dentry); if (!error) { dentry->d_inode->i_flags |= S_DEAD; diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index f6946bb..57336b7 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -1033,6 +1033,8 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry) DPRINTK("ncp_rmdir: removing %s/%s\n", dentry->d_parent->d_name.name, dentry->d_name.name); + dentry_unhash(dentry); + error = -EBUSY; if (!d_unhashed(dentry)) goto out; diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 7237672..48483b5 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1748,6 +1748,8 @@ static int nfs_rmdir(struct inode *dir, struct dentry *dentry) dfprintk(VFS, "NFS: rmdir(%s/%ld), %s\n", dir->i_sb->s_id, dir->i_ino, dentry->d_name.name); + dentry_unhash(dentry); + error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name); /* Ensure the VFS deletes this inode */ if (error == 0 && dentry->d_inode != NULL) diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index 546849b..78306e6 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -334,6 +334,8 @@ static int nilfs_rmdir(struct inode *dir, struct dentry *dentry) struct nilfs_transaction_info ti; int err; + dentry_unhash(dentry); + err = nilfs_transaction_begin(dir->i_sb, &ti, 0); if (err) return err; diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index e5d738c..b017ebb 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -810,6 +810,9 @@ static int ocfs2_unlink(struct inode *dir, (unsigned long long)OCFS2_I(dir)->ip_blkno, (unsigned long long)OCFS2_I(inode)->ip_blkno); + if (S_ISDIR(inode->i_mode)) + dentry_unhash(dentry); + dquot_initialize(dir); BUG_ON(dentry->d_parent->d_inode != dir); diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c index de4ff29..95ef443 100644 --- a/fs/omfs/dir.c +++ b/fs/omfs/dir.c @@ -240,8 +240,12 @@ static int omfs_remove(struct inode *dir, struct dentry *dentry) struct inode *inode = dentry->d_inode; int ret; - if (S_ISDIR(inode->i_mode) && !omfs_dir_is_empty(inode)) - return -ENOTEMPTY; + + if (S_ISDIR(inode->i_mode)) { + dentry_unhash(dentry); + if (!omfs_dir_is_empty(inode)) + return -ENOTEMPTY; + } ret = omfs_delete_entry(dentry); if (ret) diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index 1186626..43e94f0 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -831,6 +831,8 @@ static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry) INITIALIZE_PATH(path); struct reiserfs_dir_entry de; + dentry_unhash(dentry); + /* we will be doing 2 balancings and update 2 stat data, we change quotas * of the owner of the directory and of the owner of the parent directory. * The quota structure is possibly deleted only on last iput => outside diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c index e474fbc..fac64ac 100644 --- a/fs/sysv/namei.c +++ b/fs/sysv/namei.c @@ -196,6 +196,8 @@ static int sysv_rmdir(struct inode * dir, struct dentry * dentry) struct inode *inode = dentry->d_inode; int err = -ENOTEMPTY; + dentry_unhash(dentry); + if (sysv_empty_dir(inode)) { err = sysv_unlink(dir, dentry); if (!err) { diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index 7217d67..6ca9176 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -656,6 +656,8 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry) struct ubifs_inode *dir_ui = ubifs_inode(dir); struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 2 }; + dentry_unhash(dentry); + /* * Budget request settings: deletion direntry, deletion inode and * changing the parent inode. If budgeting fails, go ahead anyway diff --git a/fs/udf/namei.c b/fs/udf/namei.c index f1dce84..b70f026 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -783,6 +783,8 @@ static int udf_rmdir(struct inode *dir, struct dentry *dentry) struct fileIdentDesc *fi, cfi; struct kernel_lb_addr tloc; + dentry_unhash(dentry); + retval = -ENOENT; fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi); if (!fi) diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c index 29309e2..3a769d5 100644 --- a/fs/ufs/namei.c +++ b/fs/ufs/namei.c @@ -258,6 +258,8 @@ static int ufs_rmdir (struct inode * dir, struct dentry *dentry) struct inode * inode = dentry->d_inode; int err= -ENOTEMPTY; + dentry_unhash(dentry); + lock_ufs(dir->i_sb); if (ufs_empty_dir (inode)) { err = ufs_unlink(dir, dentry);