ocfs2: Set xattr block entries with ocfs2_xa_set()

ocfs2_xattr_block_set() calls into ocfs2_xattr_set_entry() with just the
HAS_XATTR flag.  Most of the machinery of ocfs2_xattr_set_entry() is
skipped.  All that really happens other than the call to ocfs2_xa_set()
is making sure the HAS_XATTR flag is set on the inode.

But HAS_XATTR should be set when we also set di->i_xattr_loc.  And
that's done in ocfs2_create_xattr_block().  So let's move it there, and
then ocfs2_xattr_block_set() can just call ocfs2_xa_set().

While we're there, ocfs2_create_xattr_block() can take the set_ctxt for
a smaller argument list.  It also learns to set HAS_XATTR_FL, because it
knows for sure.  ocfs2_create_empty_xatttr_block() in the reflink path
fakes a set_ctxt to call ocfs2_create_xattr_block().

Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 49 insertions, 50 deletions

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index e7630a77a6c8..fb8568d1e8a1 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2206,10 +2206,8 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
         int ret;
         struct ocfs2_xa_loc loc;
 
-        if (!(flag & OCFS2_INLINE_XATTR_FL))
-                BUG_ON(xs->xattr_bh == xs->inode_bh);
-        else
-                BUG_ON(xs->xattr_bh != xs->inode_bh);
+        BUG_ON(!(flag & OCFS2_INLINE_XATTR_FL));
+        BUG_ON(xs->xattr_bh != xs->inode_bh);
 
         ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), xs->inode_bh,
                                       OCFS2_JOURNAL_ACCESS_WRITE);
@@ -2218,13 +2216,8 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
                 goto out;
         }
 
-        if (xs->xattr_bh == xs->inode_bh)
-                ocfs2_init_dinode_xa_loc(&loc, inode, xs->inode_bh,
-                                         xs->not_found ? NULL : xs->here);
-        else
-                ocfs2_init_xattr_block_xa_loc(&loc, inode, xs->xattr_bh,
-                                              xs->not_found ? NULL : xs->here);
-
+        ocfs2_init_dinode_xa_loc(&loc, inode, xs->inode_bh,
+                                 xs->not_found ? NULL : xs->here);
         ret = ocfs2_xa_set(&loc, xi, ctxt);
         if (ret) {
                 if (ret != -ENOSPC)
@@ -2233,8 +2226,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
         }
         xs->here = loc.xl_entry;
 
-        if (!(oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) &&
-            (flag & OCFS2_INLINE_XATTR_FL)) {
+        if (!(oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL)) {
                 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
                 unsigned int xattrsize = osb->s_xattr_inline_size;
 
@@ -2254,7 +2246,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
         }
         /* Update xattr flag */
         spin_lock(&oi->ip_lock);
-        oi->ip_dyn_features |= flag;
+        oi->ip_dyn_features |= OCFS2_INLINE_XATTR_FL;
         di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
         spin_unlock(&oi->ip_lock);
 
@@ -2748,12 +2740,11 @@ cleanup:
         return ret;
 }
 
-static int ocfs2_create_xattr_block(handle_t *handle,
-                                    struct inode *inode,
+static int ocfs2_create_xattr_block(struct inode *inode,
                                     struct buffer_head *inode_bh,
-                                    struct ocfs2_alloc_context *meta_ac,
-                                    struct buffer_head **ret_bh,
-                                    int indexed)
+                                    struct ocfs2_xattr_set_ctxt *ctxt,
+                                    int indexed,
+                                    struct buffer_head **ret_bh)
 {
         int ret;
         u16 suballoc_bit_start;
@@ -2764,14 +2755,14 @@ static int ocfs2_create_xattr_block(handle_t *handle,
         struct buffer_head *new_bh = NULL;
         struct ocfs2_xattr_block *xblk;
 
-        ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), inode_bh,
-                                      OCFS2_JOURNAL_ACCESS_CREATE);
+        ret = ocfs2_journal_access_di(ctxt->handle, INODE_CACHE(inode),
+                                      inode_bh, OCFS2_JOURNAL_ACCESS_CREATE);
         if (ret < 0) {
                 mlog_errno(ret);
                 goto end;
         }
 
-        ret = ocfs2_claim_metadata(osb, handle, meta_ac, 1,
+        ret = ocfs2_claim_metadata(osb, ctxt->handle, ctxt->meta_ac, 1,
                                    &suballoc_bit_start, &num_got,
                                    &first_blkno);
         if (ret < 0) {
@@ -2782,7 +2773,7 @@ static int ocfs2_create_xattr_block(handle_t *handle,
         new_bh = sb_getblk(inode->i_sb, first_blkno);
         ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), new_bh);
 
-        ret = ocfs2_journal_access_xb(handle, INODE_CACHE(inode),
+        ret = ocfs2_journal_access_xb(ctxt->handle, INODE_CACHE(inode),
                                       new_bh,
                                       OCFS2_JOURNAL_ACCESS_CREATE);
         if (ret < 0) {
@@ -2794,11 +2785,10 @@ static int ocfs2_create_xattr_block(handle_t *handle,
         xblk = (struct ocfs2_xattr_block *)new_bh->b_data;
         memset(xblk, 0, inode->i_sb->s_blocksize);
         strcpy((void *)xblk, OCFS2_XATTR_BLOCK_SIGNATURE);
-        xblk->xb_suballoc_slot = cpu_to_le16(meta_ac->ac_alloc_slot);
+        xblk->xb_suballoc_slot = cpu_to_le16(ctxt->meta_ac->ac_alloc_slot);
         xblk->xb_suballoc_bit = cpu_to_le16(suballoc_bit_start);
         xblk->xb_fs_generation = cpu_to_le32(osb->fs_generation);
         xblk->xb_blkno = cpu_to_le64(first_blkno);
-
         if (indexed) {
                 struct ocfs2_xattr_tree_root *xr = &xblk->xb_attrs.xb_root;
                 xr->xt_clusters = cpu_to_le32(1);
@@ -2809,14 +2799,17 @@ static int ocfs2_create_xattr_block(handle_t *handle,
                 xr->xt_list.l_next_free_rec = cpu_to_le16(1);
                 xblk->xb_flags = cpu_to_le16(OCFS2_XATTR_INDEXED);
         }
+        ocfs2_journal_dirty(ctxt->handle, new_bh);
 
-        ret = ocfs2_journal_dirty(handle, new_bh);
-        if (ret < 0) {
-                mlog_errno(ret);
-                goto end;
-        }
+        /* Add it to the inode */
         di->i_xattr_loc = cpu_to_le64(first_blkno);
-        ocfs2_journal_dirty(handle, inode_bh);
+
+        spin_lock(&OCFS2_I(inode)->ip_lock);
+        OCFS2_I(inode)->ip_dyn_features |= OCFS2_HAS_XATTR_FL;
+        di->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
+        spin_unlock(&OCFS2_I(inode)->ip_lock);
+
+        ocfs2_journal_dirty(ctxt->handle, inode_bh);
 
         *ret_bh = new_bh;
         new_bh = NULL;
@@ -2838,13 +2831,13 @@ static int ocfs2_xattr_block_set(struct inode *inode,
                                  struct ocfs2_xattr_set_ctxt *ctxt)
 {
         struct buffer_head *new_bh = NULL;
-        handle_t *handle = ctxt->handle;
         struct ocfs2_xattr_block *xblk = NULL;
         int ret;
+        struct ocfs2_xa_loc loc;
 
         if (!xs->xattr_bh) {
-                ret = ocfs2_create_xattr_block(handle, inode, xs->inode_bh,
-                                               ctxt->meta_ac, &new_bh, 0);
+                ret = ocfs2_create_xattr_block(inode, xs->inode_bh, ctxt,
+                                               0, &new_bh);
                 if (ret) {
                         mlog_errno(ret);
                         goto end;
@@ -2860,21 +2853,25 @@ static int ocfs2_xattr_block_set(struct inode *inode,
                 xblk = (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
 
         if (!(le16_to_cpu(xblk->xb_flags) & OCFS2_XATTR_INDEXED)) {
-                /* Set extended attribute into external block */
-                ret = ocfs2_xattr_set_entry(inode, xi, xs, ctxt,
-                                            OCFS2_HAS_XATTR_FL);
-                if (!ret || ret != -ENOSPC)
-                        goto end;
+                ocfs2_init_xattr_block_xa_loc(&loc, inode, xs->xattr_bh,
+                                              xs->not_found ? NULL : xs->here);
 
-                ret = ocfs2_xattr_create_index_block(inode, xs, ctxt);
-                if (ret)
+                ret = ocfs2_xa_set(&loc, xi, ctxt);
+                if (!ret)
+                        xs->here = loc.xl_entry;
+                else if (ret != -ENOSPC)
                         goto end;
+                else {
+                        ret = ocfs2_xattr_create_index_block(inode, xs, ctxt);
+                        if (ret)
+                                goto end;
+                }
         }
 
-        ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs, ctxt);
+        if (le16_to_cpu(xblk->xb_flags) & OCFS2_XATTR_INDEXED)
+                ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs, ctxt);
 
 end:
-
         return ret;
 }
 
@@ -6434,9 +6431,11 @@ static int ocfs2_create_empty_xattr_block(struct inode *inode,
                                           int indexed)
 {
         int ret;
-        handle_t *handle;
         struct ocfs2_alloc_context *meta_ac;
         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+        struct ocfs2_xattr_set_ctxt ctxt = {
+                .meta_ac = meta_ac,
+        };
 
         ret = ocfs2_reserve_new_metadata_blocks(osb, 1, &meta_ac);
         if (ret < 0) {
@@ -6444,21 +6443,21 @@ static int ocfs2_create_empty_xattr_block(struct inode *inode,
                 return ret;
         }
 
-        handle = ocfs2_start_trans(osb, OCFS2_XATTR_BLOCK_CREATE_CREDITS);
-        if (IS_ERR(handle)) {
-                ret = PTR_ERR(handle);
+        ctxt.handle = ocfs2_start_trans(osb, OCFS2_XATTR_BLOCK_CREATE_CREDITS);
+        if (IS_ERR(ctxt.handle)) {
+                ret = PTR_ERR(ctxt.handle);
                 mlog_errno(ret);
                 goto out;
         }
 
         mlog(0, "create new xattr block for inode %llu, index = %d\n",
              (unsigned long long)fe_bh->b_blocknr, indexed);
-        ret = ocfs2_create_xattr_block(handle, inode, fe_bh,
-                                       meta_ac, ret_bh, indexed);
+        ret = ocfs2_create_xattr_block(inode, fe_bh, &ctxt, indexed,
+                                       ret_bh);
         if (ret)
                 mlog_errno(ret);
 
-        ocfs2_commit_trans(osb, handle);
+        ocfs2_commit_trans(osb, ctxt.handle);
 out:
         ocfs2_free_alloc_context(meta_ac);
         return ret;