diff mbox

[3/5] xfs: check for cow blocks before trying to clear them during inode reclaim

Message ID 151935120057.21654.6400354165591541565.stgit@magnolia (mailing list archive)
State Accepted
Headers show

Commit Message

Darrick J. Wong Feb. 23, 2018, 2 a.m. UTC
From: Darrick J. Wong <darrick.wong@oracle.com>

There's no point in allocating a transaction and locking the inode in
preparation to clear cow blocks if there actually are any cow fork
extents.  Therefore, move the xfs_reflink_cancel_cow_range hunk to
xfs_inactive and check the cow ifp first.  This makes inode reclamation
run faster.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_inode.c |    5 +++++
 fs/xfs/xfs_super.c |    9 ---------
 2 files changed, 5 insertions(+), 9 deletions(-)



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Comments

Brian Foster Feb. 27, 2018, 1:55 p.m. UTC | #1
On Thu, Feb 22, 2018 at 06:00:00PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> There's no point in allocating a transaction and locking the inode in
> preparation to clear cow blocks if there actually are any cow fork
> extents.  Therefore, move the xfs_reflink_cancel_cow_range hunk to
> xfs_inactive and check the cow ifp first.  This makes inode reclamation
> run faster.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---

Reviewed-by: Brian Foster <bfoster@redhat.com>

>  fs/xfs/xfs_inode.c |    5 +++++
>  fs/xfs/xfs_super.c |    9 ---------
>  2 files changed, 5 insertions(+), 9 deletions(-)
> 
> 
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index 604ee38..50fbbf5 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -1872,6 +1872,7 @@ xfs_inactive(
>  	xfs_inode_t	*ip)
>  {
>  	struct xfs_mount	*mp;
> +	struct xfs_ifork	*cow_ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
>  	int			error;
>  	int			truncate = 0;
>  
> @@ -1892,6 +1893,10 @@ xfs_inactive(
>  	if (mp->m_flags & XFS_MOUNT_RDONLY)
>  		return;
>  
> +	/* Try to clean out the cow blocks if there are any. */
> +	if (xfs_is_reflink_inode(ip) && cow_ifp->if_bytes > 0)
> +		xfs_reflink_cancel_cow_range(ip, 0, NULLFILEOFF, true);
> +
>  	if (VFS_I(ip)->i_nlink != 0) {
>  		/*
>  		 * force is true because we are evicting an inode from the
> diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
> index 7aba628..624a802 100644
> --- a/fs/xfs/xfs_super.c
> +++ b/fs/xfs/xfs_super.c
> @@ -970,7 +970,6 @@ xfs_fs_destroy_inode(
>  	struct inode		*inode)
>  {
>  	struct xfs_inode	*ip = XFS_I(inode);
> -	int			error;
>  
>  	trace_xfs_destroy_inode(ip);
>  
> @@ -978,14 +977,6 @@ xfs_fs_destroy_inode(
>  	XFS_STATS_INC(ip->i_mount, vn_rele);
>  	XFS_STATS_INC(ip->i_mount, vn_remove);
>  
> -	if (xfs_is_reflink_inode(ip)) {
> -		error = xfs_reflink_cancel_cow_range(ip, 0, NULLFILEOFF, true);
> -		if (error && !XFS_FORCED_SHUTDOWN(ip->i_mount))
> -			xfs_warn(ip->i_mount,
> -"Error %d while evicting CoW blocks for inode %llu.",
> -					error, ip->i_ino);
> -	}
> -
>  	xfs_inactive(ip);
>  
>  	ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
> 
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diff mbox

Patch

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 604ee38..50fbbf5 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1872,6 +1872,7 @@  xfs_inactive(
 	xfs_inode_t	*ip)
 {
 	struct xfs_mount	*mp;
+	struct xfs_ifork	*cow_ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
 	int			error;
 	int			truncate = 0;
 
@@ -1892,6 +1893,10 @@  xfs_inactive(
 	if (mp->m_flags & XFS_MOUNT_RDONLY)
 		return;
 
+	/* Try to clean out the cow blocks if there are any. */
+	if (xfs_is_reflink_inode(ip) && cow_ifp->if_bytes > 0)
+		xfs_reflink_cancel_cow_range(ip, 0, NULLFILEOFF, true);
+
 	if (VFS_I(ip)->i_nlink != 0) {
 		/*
 		 * force is true because we are evicting an inode from the
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 7aba628..624a802 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -970,7 +970,6 @@  xfs_fs_destroy_inode(
 	struct inode		*inode)
 {
 	struct xfs_inode	*ip = XFS_I(inode);
-	int			error;
 
 	trace_xfs_destroy_inode(ip);
 
@@ -978,14 +977,6 @@  xfs_fs_destroy_inode(
 	XFS_STATS_INC(ip->i_mount, vn_rele);
 	XFS_STATS_INC(ip->i_mount, vn_remove);
 
-	if (xfs_is_reflink_inode(ip)) {
-		error = xfs_reflink_cancel_cow_range(ip, 0, NULLFILEOFF, true);
-		if (error && !XFS_FORCED_SHUTDOWN(ip->i_mount))
-			xfs_warn(ip->i_mount,
-"Error %d while evicting CoW blocks for inode %llu.",
-					error, ip->i_ino);
-	}
-
 	xfs_inactive(ip);
 
 	ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);