ocfs2: move new inode allocation out of the transaction

Move out inode allocation from ocfs2_mknod_locked() because
vfs_dq_init() must be called outside of a transaction.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

1 files changed, 64 insertions, 44 deletions

diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 2545e7402efe..e8ff0bae179d 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -66,12 +66,12 @@
 
 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
                               struct inode *dir,
-                              struct dentry *dentry, int mode,
+                              struct inode *inode,
+                              struct dentry *dentry,
                               dev_t dev,
                               struct buffer_head **new_fe_bh,
                               struct buffer_head *parent_fe_bh,
                               handle_t *handle,
-                              struct inode **ret_inode,
                               struct ocfs2_alloc_context *inode_ac);
 
 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
@@ -186,6 +186,34 @@ bail:
         return ret;
 }
 
+static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
+{
+        struct inode *inode;
+
+        inode = new_inode(dir->i_sb);
+        if (!inode) {
+                mlog(ML_ERROR, "new_inode failed!\n");
+                return NULL;
+        }
+
+        /* populate as many fields early on as possible - many of
+         * these are used by the support functions here and in
+         * callers. */
+        if (S_ISDIR(mode))
+                inode->i_nlink = 2;
+        else
+                inode->i_nlink = 1;
+        inode->i_uid = current_fsuid();
+        if (dir->i_mode & S_ISGID) {
+                inode->i_gid = dir->i_gid;
+                if (S_ISDIR(mode))
+                        mode |= S_ISGID;
+        } else
+                inode->i_gid = current_fsgid();
+        inode->i_mode = mode;
+        return inode;
+}
+
 static int ocfs2_mknod(struct inode *dir,
                        struct dentry *dentry,
                        int mode,
@@ -250,6 +278,13 @@ static int ocfs2_mknod(struct inode *dir,
                 goto leave;
         }
 
+        inode = ocfs2_get_init_inode(dir, mode);
+        if (!inode) {
+                status = -ENOMEM;
+                mlog_errno(status);
+                goto leave;
+        }
+
         /* Reserve a cluster if creating an extent based directory. */
         if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
                 status = ocfs2_reserve_clusters(osb, 1, &data_ac);
@@ -269,9 +304,9 @@ static int ocfs2_mknod(struct inode *dir,
         }
 
         /* do the real work now. */
-        status = ocfs2_mknod_locked(osb, dir, dentry, mode, dev,
+        status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev,
                                     &new_fe_bh, parent_fe_bh, handle,
-                                    &inode, inode_ac);
+                                    inode_ac);
         if (status < 0) {
                 mlog_errno(status);
                 goto leave;
@@ -332,8 +367,10 @@ leave:
         brelse(de_bh);
         brelse(parent_fe_bh);
 
-        if ((status < 0) && inode)
+        if ((status < 0) && inode) {
+                clear_nlink(inode);
                 iput(inode);
+        }
 
         if (inode_ac)
                 ocfs2_free_alloc_context(inode_ac);
@@ -348,12 +385,12 @@ leave:
 
 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
                               struct inode *dir,
-                              struct dentry *dentry, int mode,
+                              struct inode *inode,
+                              struct dentry *dentry,
                               dev_t dev,
                               struct buffer_head **new_fe_bh,
                               struct buffer_head *parent_fe_bh,
                               handle_t *handle,
-                              struct inode **ret_inode,
                               struct ocfs2_alloc_context *inode_ac)
 {
         int status = 0;
@@ -361,14 +398,12 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
         struct ocfs2_extent_list *fel;
         u64 fe_blkno = 0;
         u16 suballoc_bit;
-        struct inode *inode = NULL;
 
-        mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
-                   (unsigned long)dev, dentry->d_name.len,
+        mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
+                   inode->i_mode, (unsigned long)dev, dentry->d_name.len,
                    dentry->d_name.name);
 
         *new_fe_bh = NULL;
-        *ret_inode = NULL;
 
         status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit,
                                        &fe_blkno);
@@ -377,23 +412,11 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
                 goto leave;
         }
 
-        inode = new_inode(dir->i_sb);
-        if (!inode) {
-                status = -ENOMEM;
-                mlog(ML_ERROR, "new_inode failed!\n");
-                goto leave;
-        }
-
         /* populate as many fields early on as possible - many of
          * these are used by the support functions here and in
          * callers. */
         inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
         OCFS2_I(inode)->ip_blkno = fe_blkno;
-        if (S_ISDIR(mode))
-                inode->i_nlink = 2;
-        else
-                inode->i_nlink = 1;
-        inode->i_mode = mode;
         spin_lock(&osb->osb_lock);
         inode->i_generation = osb->s_next_generation++;
         spin_unlock(&osb->osb_lock);
@@ -421,17 +444,11 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
         fe->i_blkno = cpu_to_le64(fe_blkno);
         fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
         fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
-        fe->i_uid = cpu_to_le32(current_fsuid());
-        if (dir->i_mode & S_ISGID) {
-                fe->i_gid = cpu_to_le32(dir->i_gid);
-                if (S_ISDIR(mode))
-                        mode |= S_ISGID;
-        } else
-                fe->i_gid = cpu_to_le32(current_fsgid());
-        fe->i_mode = cpu_to_le16(mode);
-        if (S_ISCHR(mode) || S_ISBLK(mode))
+        fe->i_uid = cpu_to_le32(inode->i_uid);
+        fe->i_gid = cpu_to_le32(inode->i_gid);
+        fe->i_mode = cpu_to_le16(inode->i_mode);
+        if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
                 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
-
         fe->i_links_count = cpu_to_le16(inode->i_nlink);
 
         fe->i_last_eb_blk = 0;
@@ -446,7 +463,7 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
         /*
          * If supported, directories start with inline data.
          */
-        if (S_ISDIR(mode) && ocfs2_supports_inline_data(osb)) {
+        if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
                 u16 feat = le16_to_cpu(fe->i_dyn_features);
 
                 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
@@ -484,17 +501,12 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
         status = 0; /* error in ocfs2_create_new_inode_locks is not
                      * critical */
 
-        *ret_inode = inode;
 leave:
         if (status < 0) {
                 if (*new_fe_bh) {
                         brelse(*new_fe_bh);
                         *new_fe_bh = NULL;
                 }
-                if (inode) {
-                        clear_nlink(inode);
-                        iput(inode);
-                }
         }
 
         mlog_exit(status);
@@ -1542,6 +1554,13 @@ static int ocfs2_symlink(struct inode *dir,
                 goto bail;
         }
 
+        inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
+        if (!inode) {
+                status = -ENOMEM;
+                mlog_errno(status);
+                goto bail;
+        }
+
         /* don't reserve bitmap space for fast symlinks. */
         if (l > ocfs2_fast_symlink_chars(sb)) {
                 status = ocfs2_reserve_clusters(osb, 1, &data_ac);
@@ -1560,10 +1579,9 @@ static int ocfs2_symlink(struct inode *dir,
                 goto bail;
         }
 
-        status = ocfs2_mknod_locked(osb, dir, dentry,
-                                    S_IFLNK | S_IRWXUGO, 0,
-                                    &new_fe_bh, parent_fe_bh, handle,
-                                    &inode, inode_ac);
+        status = ocfs2_mknod_locked(osb, dir, inode, dentry,
+                                    0, &new_fe_bh, parent_fe_bh, handle,
+                                    inode_ac);
         if (status < 0) {
                 mlog_errno(status);
                 goto bail;
@@ -1644,8 +1662,10 @@ bail:
                 ocfs2_free_alloc_context(inode_ac);
         if (data_ac)
                 ocfs2_free_alloc_context(data_ac);
-        if ((status < 0) && inode)
+        if ((status < 0) && inode) {
+                clear_nlink(inode);
                 iput(inode);
+        }
 
         mlog_exit(status);