From c85b224fafacafa49817101f26f0a9760a8d05d1 Mon Sep 17 00:00:00 2001 From: Brian Behlendorf <behlendorf1@llnl.gov> Date: Tue, 29 Mar 2011 23:04:39 -0700 Subject: Call d_instantiate before unlocking inode Under Linux a dentry referencing an inode must be instantiated before the inode is unlocked. To accomplish this without overly modifing the core ZFS code the dentry it passed via the vattr_t. There are cases such as replay when a dentry is not available. In which case it is obviously not initialized at inode creation time, if a dentry is needed it will be spliced as when required via d_lookup(). --- module/zfs/zfs_dir.c | 4 ---- module/zfs/zfs_znode.c | 11 ++++++++--- module/zfs/zpl_inode.c | 24 ++++-------------------- 3 files changed, 12 insertions(+), 27 deletions(-) (limited to 'module') diff --git a/module/zfs/zfs_dir.c b/module/zfs/zfs_dir.c index f54ed1912..355b0ef0a 100644 --- a/module/zfs/zfs_dir.c +++ b/module/zfs/zfs_dir.c @@ -774,10 +774,6 @@ zfs_link_create(zfs_dirlock_t *dl, znode_t *zp, dmu_tx_t *tx, int flag) 8, 1, &value, tx); ASSERT(error == 0); -#ifdef HAVE_DNLC - dnlc_update(ZTOI(dzp), dl->dl_name, vp); -#endif /* HAVE_DNLC */ - return (0); } diff --git a/module/zfs/zfs_znode.c b/module/zfs/zfs_znode.c index 1fe88499b..f9ea2a0eb 100644 --- a/module/zfs/zfs_znode.c +++ b/module/zfs/zfs_znode.c @@ -322,7 +322,8 @@ zfs_inode_set_ops(zfs_sb_t *zsb, struct inode *ip) */ static znode_t * zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, - dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl) + dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl, + struct dentry *dentry) { znode_t *zp; struct inode *ip; @@ -379,6 +380,9 @@ zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, if (insert_inode_locked(ip)) goto error; + if (dentry) + d_instantiate(dentry, ip); + mutex_enter(&zsb->z_znodes_lock); list_insert_tail(&zsb->z_all_znodes, zp); membar_producer(); @@ -675,7 +679,8 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr, VERIFY(sa_replace_all_by_template(sa_hdl, sa_attrs, cnt, tx) == 0); if (!(flag & IS_ROOT_NODE)) { - *zpp = zfs_znode_alloc(zsb, db, 0, obj_type, obj, sa_hdl); + *zpp = zfs_znode_alloc(zsb, db, 0, obj_type, obj, sa_hdl, + vap->va_dentry); ASSERT(*zpp != NULL); ASSERT(dzp != NULL); err = zpl_xattr_security_init(ZTOI(*zpp), ZTOI(dzp)); @@ -866,7 +871,7 @@ zfs_zget(zfs_sb_t *zsb, uint64_t obj_num, znode_t **zpp) * bonus buffer. */ zp = zfs_znode_alloc(zsb, db, doi.doi_data_block_size, - doi.doi_bonus_type, obj_num, NULL); + doi.doi_bonus_type, obj_num, NULL, NULL); if (zp == NULL) { err = ENOENT; } else { diff --git a/module/zfs/zpl_inode.c b/module/zfs/zpl_inode.c index fcc19b004..029a4038b 100644 --- a/module/zfs/zpl_inode.c +++ b/module/zfs/zpl_inode.c @@ -66,14 +66,10 @@ zpl_create(struct inode *dir, struct dentry *dentry, int mode, vap->va_mask = ATTR_MODE; vap->va_uid = crgetfsuid(cr); vap->va_gid = crgetfsgid(cr); + vap->va_dentry = dentry; error = -zfs_create(dir, (char *)dentry->d_name.name, vap, 0, mode, &ip, cr, 0, NULL); - if (error) - goto out; - - d_instantiate(dentry, ip); -out: kmem_free(vap, sizeof(vattr_t)); crfree(cr); ASSERT3S(error, <=, 0); @@ -96,14 +92,10 @@ zpl_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) vap->va_rdev = rdev; vap->va_uid = crgetfsuid(cr); vap->va_gid = crgetfsgid(cr); + vap->va_dentry = dentry; error = -zfs_create(dir, (char *)dentry->d_name.name, vap, 0, mode, &ip, cr, 0, NULL); - if (error) - goto out; - - d_instantiate(dentry, ip); -out: kmem_free(vap, sizeof(vattr_t)); crfree(cr); ASSERT3S(error, <=, 0); @@ -139,13 +131,9 @@ zpl_mkdir(struct inode *dir, struct dentry *dentry, int mode) vap->va_mask = ATTR_MODE; vap->va_uid = crgetfsuid(cr); vap->va_gid = crgetfsgid(cr); + vap->va_dentry = dentry; error = -zfs_mkdir(dir, dname(dentry), vap, &ip, cr, 0, NULL); - if (error) - goto out; - - d_instantiate(dentry, ip); -out: kmem_free(vap, sizeof(vattr_t)); crfree(cr); ASSERT3S(error, <=, 0); @@ -264,13 +252,9 @@ zpl_symlink(struct inode *dir, struct dentry *dentry, const char *name) vap->va_mask = ATTR_MODE; vap->va_uid = crgetfsuid(cr); vap->va_gid = crgetfsgid(cr); + vap->va_dentry = dentry; error = -zfs_symlink(dir, dname(dentry), vap, (char *)name, &ip, cr, 0); - if (error) - goto out; - - d_instantiate(dentry, ip); -out: kmem_free(vap, sizeof(vattr_t)); crfree(cr); ASSERT3S(error, <=, 0); -- cgit v1.2.3