From c8eac49ef798a7d00240847f63902caa1388241a Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Tue, 24 Jul 2018 13:43:13 -0700 Subject: xfs: remove all boilerplate defer init/finish code At this point, the transaction subsystem completely manages deferred items internally such that the common and boilerplate xfs_trans_alloc() -> xfs_defer_init() -> xfs_defer_finish() -> xfs_trans_commit() sequence can be replaced with a simple transaction allocation and commit. Remove all such boilerplate deferred ops code. In doing so, we change each case over to use the dfops in the transaction and specifically eliminate: - The on-stack dfops and associated xfs_defer_init() call, as the internal dfops is initialized on transaction allocation. - xfs_bmap_finish() calls that precede a final xfs_trans_commit() of a transaction. - xfs_defer_cancel() calls in error handlers that precede a transaction cancel. The only deferred ops calls that remain are those that are non-deterministic with respect to the final commit of the associated transaction or are open-coded due to special handling. Signed-off-by: Brian Foster Reviewed-by: Bill O'Donnell Reviewed-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_rtalloc.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'fs/xfs/xfs_rtalloc.c') diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index bc471d42a968..86d7d2f76226 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -761,7 +761,6 @@ xfs_growfs_rt_alloc( struct xfs_buf *bp; /* temporary buffer for zeroing */ xfs_daddr_t d; /* disk block address */ int error; /* error return value */ - struct xfs_defer_ops dfops; /* list of freed blocks */ xfs_fsblock_t fsbno; /* filesystem block for bno */ struct xfs_bmbt_irec map; /* block map output */ int nmap; /* number of block maps */ @@ -786,7 +785,6 @@ xfs_growfs_rt_alloc( xfs_ilock(ip, XFS_ILOCK_EXCL); xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_defer_init(tp, &dfops); /* * Allocate blocks to the bitmap file. */ @@ -797,13 +795,10 @@ xfs_growfs_rt_alloc( if (!error && nmap < 1) error = -ENOSPC; if (error) - goto out_bmap_cancel; + goto out_trans_cancel; /* * Free any blocks freed up in the transaction, then commit. */ - error = xfs_defer_finish(&tp, tp->t_dfops); - if (error) - goto out_bmap_cancel; error = xfs_trans_commit(tp); if (error) return error; @@ -853,8 +848,6 @@ xfs_growfs_rt_alloc( return 0; -out_bmap_cancel: - xfs_defer_cancel(tp->t_dfops); out_trans_cancel: xfs_trans_cancel(tp); return error; -- cgit v1.2.3