xfs: Hoist xfs_attr_leaf_addname

This patch hoists xfs_attr_leaf_addname into the calling function.  The
goal being to get all the code that will require state management into
the same scope. This isn't particularly aesthetic right away, but it is a
preliminary step to merging in the state machine code.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index b35c7424152c7c10c2a861ffe30bc465e6ea333b..4bbf34cc44e3b8206196797cb36a1bc28a6efdcb 100644 (file)
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -44,9 +44,9 @@ STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args);
  * Internal routines when attribute list is one block.
  */
 STATIC int xfs_attr_leaf_get(xfs_da_args_t *args);
-STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args);
 STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args);
 STATIC int xfs_attr_leaf_hasname(struct xfs_da_args *args, struct xfs_buf **bp);
+STATIC int xfs_attr_leaf_try_add(struct xfs_da_args *args, struct xfs_buf *bp);
 
 /*
  * Internal routines when attribute list is more than one block.
@@ -291,8 +291,9 @@ xfs_attr_set_args(
        struct xfs_da_args      *args)
 {
        struct xfs_inode        *dp = args->dp;
+       struct xfs_buf          *bp = NULL;
        struct xfs_da_state     *state = NULL;
-       int                     error = 0;
+       int                     forkoff, error = 0;
 
        /*
         * If the attribute list is already in leaf format, jump straight to
@@ -307,10 +308,101 @@ xfs_attr_set_args(
        }
 
        if (xfs_attr_is_leaf(dp)) {
-               error = xfs_attr_leaf_addname(args);
-               if (error != -ENOSPC)
+               error = xfs_attr_leaf_try_add(args, bp);
+               if (error == -ENOSPC)
+                       goto node;
+               else if (error)
+                       return error;
+
+               /*
+                * Commit the transaction that added the attr name so that
+                * later routines can manage their own transactions.
+                */
+               error = xfs_trans_roll_inode(&args->trans, dp);
+               if (error)
+                       return error;
+
+               /*
+                * If there was an out-of-line value, allocate the blocks we
+                * identified for its storage and copy the value.  This is done
+                * after we create the attribute so that we don't overflow the
+                * maximum size of a transaction and/or hit a deadlock.
+                */
+               if (args->rmtblkno > 0) {
+                       error = xfs_attr_rmtval_set(args);
+                       if (error)
+                               return error;
+               }
+
+               if (!(args->op_flags & XFS_DA_OP_RENAME)) {
+                       /*
+                        * Added a "remote" value, just clear the incomplete
+                        *flag.
+                        */
+                       if (args->rmtblkno > 0)
+                               error = xfs_attr3_leaf_clearflag(args);
+
+                       return error;
+               }
+
+               /*
+                * If this is an atomic rename operation, we must "flip" the
+                * incomplete flags on the "new" and "old" attribute/value pairs
+                * so that one disappears and one appears atomically.  Then we
+                * must remove the "old" attribute/value pair.
+                *
+                * In a separate transaction, set the incomplete flag on the
+                * "old" attr and clear the incomplete flag on the "new" attr.
+                */
+
+               error = xfs_attr3_leaf_flipflags(args);
+               if (error)
+                       return error;
+               /*
+                * Commit the flag value change and start the next trans in
+                * series.
+                */
+               error = xfs_trans_roll_inode(&args->trans, args->dp);
+               if (error)
+                       return error;
+
+               /*
+                * Dismantle the "old" attribute/value pair by removing a
+                * "remote" value (if it exists).
+                */
+               xfs_attr_restore_rmt_blk(args);
+
+               if (args->rmtblkno) {
+                       error = xfs_attr_rmtval_invalidate(args);
+                       if (error)
+                               return error;
+
+                       error = xfs_attr_rmtval_remove(args);
+                       if (error)
+                               return error;
+               }
+
+               /*
+                * Read in the block containing the "old" attr, then remove the
+                * "old" attr from that block (neat, huh!)
+                */
+               error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno,
+                                          &bp);
+               if (error)
                        return error;
 
+               xfs_attr3_leaf_remove(bp, args);
+
+               /*
+                * If the result is small enough, shrink it all into the inode.
+                */
+               forkoff = xfs_attr_shortform_allfit(bp, dp);
+               if (forkoff)
+                       error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
+                       /* bp is gone due to xfs_da_shrink_inode */
+
+               return error;
+node:
                /*
                 * Promote the attribute list to the Btree format.
                 */
@@ -737,115 +829,6 @@ out_brelse:
        return retval;
 }
 
-
-/*
- * Add a name to the leaf attribute list structure
- *
- * This leaf block cannot have a "remote" value, we only call this routine
- * if bmap_one_block() says there is only one block (ie: no remote blks).
- */
-STATIC int
-xfs_attr_leaf_addname(
-       struct xfs_da_args      *args)
-{
-       int                     error, forkoff;
-       struct xfs_buf          *bp = NULL;
-       struct xfs_inode        *dp = args->dp;
-
-       trace_xfs_attr_leaf_addname(args);
-
-       error = xfs_attr_leaf_try_add(args, bp);
-       if (error)
-               return error;
-
-       /*
-        * Commit the transaction that added the attr name so that
-        * later routines can manage their own transactions.
-        */
-       error = xfs_trans_roll_inode(&args->trans, dp);
-       if (error)
-               return error;
-
-       /*
-        * If there was an out-of-line value, allocate the blocks we
-        * identified for its storage and copy the value.  This is done
-        * after we create the attribute so that we don't overflow the
-        * maximum size of a transaction and/or hit a deadlock.
-        */
-       if (args->rmtblkno > 0) {
-               error = xfs_attr_rmtval_set(args);
-               if (error)
-                       return error;
-       }
-
-       if (!(args->op_flags & XFS_DA_OP_RENAME)) {
-               /*
-                * Added a "remote" value, just clear the incomplete flag.
-                */
-               if (args->rmtblkno > 0)
-                       error = xfs_attr3_leaf_clearflag(args);
-
-               return error;
-       }
-
-       /*
-        * If this is an atomic rename operation, we must "flip" the incomplete
-        * flags on the "new" and "old" attribute/value pairs so that one
-        * disappears and one appears atomically.  Then we must remove the "old"
-        * attribute/value pair.
-        *
-        * In a separate transaction, set the incomplete flag on the "old" attr
-        * and clear the incomplete flag on the "new" attr.
-        */
-
-       error = xfs_attr3_leaf_flipflags(args);
-       if (error)
-               return error;
-       /*
-        * Commit the flag value change and start the next trans in series.
-        */
-       error = xfs_trans_roll_inode(&args->trans, args->dp);
-       if (error)
-               return error;
-
-       /*
-        * Dismantle the "old" attribute/value pair by removing a "remote" value
-        * (if it exists).
-        */
-       xfs_attr_restore_rmt_blk(args);
-
-       if (args->rmtblkno) {
-               error = xfs_attr_rmtval_invalidate(args);
-               if (error)
-                       return error;
-
-               error = xfs_attr_rmtval_remove(args);
-               if (error)
-                       return error;
-       }
-
-       /*
-        * Read in the block containing the "old" attr, then remove the "old"
-        * attr from that block (neat, huh!)
-        */
-       error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno,
-                                  &bp);
-       if (error)
-               return error;
-
-       xfs_attr3_leaf_remove(bp, args);
-
-       /*
-        * If the result is small enough, shrink it all into the inode.
-        */
-       forkoff = xfs_attr_shortform_allfit(bp, dp);
-       if (forkoff)
-               error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
-               /* bp is gone due to xfs_da_shrink_inode */
-
-       return error;
-}
-
 /*
  * Return EEXIST if attr is found, or ENOATTR if not
  */

diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 808ae337b222b57e90d961f7f67236d75f1d53eb..3c1c830befba3448ea5048e8e946fa855829fb6b 100644 (file)
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -1914,7 +1914,6 @@ DEFINE_ATTR_EVENT(xfs_attr_leaf_add);
 DEFINE_ATTR_EVENT(xfs_attr_leaf_add_old);
 DEFINE_ATTR_EVENT(xfs_attr_leaf_add_new);
 DEFINE_ATTR_EVENT(xfs_attr_leaf_add_work);
-DEFINE_ATTR_EVENT(xfs_attr_leaf_addname);
 DEFINE_ATTR_EVENT(xfs_attr_leaf_create);
 DEFINE_ATTR_EVENT(xfs_attr_leaf_compact);
 DEFINE_ATTR_EVENT(xfs_attr_leaf_get);