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xfs: Split apart xfs_attr_leaf_addname 

Split out new helper function xfs_attr_leaf_try_add from
xfs_attr_leaf_addname. Because new delayed attribute routines cannot
roll transactions, we split off the parts of xfs_attr_leaf_addname that
we can use, and move the commit into the calling function.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Allison Collins 2020-07-20 21:47:24 -07:00 committed by Darrick J. Wong
parent e3be1272dd
commit 7c93d4a8fc
1 changed files with 63 additions and 36 deletions
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99
fs/xfs/libxfs/xfs_attr.c
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@ -256,10 +256,31 @@ xfs_attr_set_args(
}
}
if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
error = xfs_attr_leaf_addname(args);
else
error = xfs_attr_node_addname(args);
if (error != -ENOSPC)
return error;
/*
* Finish any deferred work items and roll the transaction once
* more. The goal here is to call node_addname with the inode
* and transaction in the same state (inode locked and joined,
* transaction clean) no matter how we got to this step.
*/
error = xfs_defer_finish(&args->trans);
if (error)
return error;
/*
* Commit the current trans (including the inode) and
* start a new one.
*/
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
return error;
}
error = xfs_attr_node_addname(args);
return error;
}
@ -507,20 +528,21 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
*========================================================================*/
/*
* Add a name to the leaf attribute list structure
* Tries to add an attribute to an inode in leaf form
*
* 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).
* This function is meant to execute as part of a delayed operation and leaves
* the transaction handling to the caller. On success the attribute is added
* and the inode and transaction are left dirty. If there is not enough space,
* the attr data is converted to node format and -ENOSPC is returned. Caller is
* responsible for handling the dirty inode and transaction or adding the attr
* in node format.
*/
STATIC int
xfs_attr_leaf_addname(
struct xfs_da_args *args)
xfs_attr_leaf_try_add(
struct xfs_da_args *args,
struct xfs_buf *bp)
{
struct xfs_buf *bp;
int retval, error, forkoff;
struct xfs_inode *dp = args->dp;
trace_xfs_attr_leaf_addname(args);
int retval, error;
/*
* Look up the given attribute in the leaf block. Figure out if
@ -562,31 +584,39 @@ xfs_attr_leaf_addname(
retval = xfs_attr3_leaf_add(bp, args);
if (retval == -ENOSPC) {
/*
* Promote the attribute list to the Btree format, then
* Commit that transaction so that the node_addname() call
* can manage its own transactions.
* Promote the attribute list to the Btree format. Unless an
* error occurs, retain the -ENOSPC retval
*/
error = xfs_attr3_leaf_to_node(args);
if (error)
return error;
error = xfs_defer_finish(&args->trans);
if (error)
return error;
/*
* Commit the current trans (including the inode) and start
* a new one.
*/
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
return error;
/*
* Fob the whole rest of the problem off on the Btree code.
*/
error = xfs_attr_node_addname(args);
return error;
}
return retval;
out_brelse:
xfs_trans_brelse(args->trans, bp);
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
@ -681,9 +711,6 @@ xfs_attr_leaf_addname(
error = xfs_attr3_leaf_clearflag(args);
}
return error;
out_brelse:
xfs_trans_brelse(args->trans, bp);
return retval;
}
/*