FAILED: patch "[PATCH] xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags" failed to apply to 6.15-stable tree

FAILED: patch "[PATCH] xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags" failed to apply to 6.15-stable tree

[gregkh]

The patch below does not apply to the 6.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.15.y
git checkout FETCH_HEAD
git cherry-pick -x d2845519b0723c5d5a0266cbf410495f9b8fd65c
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2025081857-glitter-hummus-4836@gregkh' --subject-prefix 'PATCH 6.15.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From d2845519b0723c5d5a0266cbf410495f9b8fd65c Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 23 Jul 2025 14:19:44 +0200
Subject: [PATCH] xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags

Fix up xfs_inumbers to now pass in the XFS_IBULK* flags into the flags
argument to xfs_inobt_walk, which expects the XFS_IWALK* flags.

Currently passing the wrong flags works for non-debug builds because
the only XFS_IWALK* flag has the same encoding as the corresponding
XFS_IBULK* flag, but in debug builds it can trigger an assert that no
incorrect flag is passed.  Instead just extra the relevant flag.

Fixes: 5b35d922c52798 ("xfs: Decouple XFS_IBULK flags from XFS_IWALK flags")
Cc: <stable@vger.kernel.org> # v5.19
Reported-by: cen zhang <zzzccc427@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index c8c9b8d8309f..5116842420b2 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -447,17 +447,21 @@ xfs_inumbers(
 		.breq		= breq,
 	};
 	struct xfs_trans	*tp;
+	unsigned int		iwalk_flags = 0;
 	int			error = 0;
 
 	if (xfs_bulkstat_already_done(breq->mp, breq->startino))
 		return 0;
 
+	if (breq->flags & XFS_IBULK_SAME_AG)
+		iwalk_flags |= XFS_IWALK_SAME_AG;
+
 	/*
 	 * Grab an empty transaction so that we can use its recursive buffer
 	 * locking abilities to detect cycles in the inobt without deadlocking.
 	 */
 	tp = xfs_trans_alloc_empty(breq->mp);
-	error = xfs_inobt_walk(breq->mp, tp, breq->startino, breq->flags,
+	error = xfs_inobt_walk(breq->mp, tp, breq->startino, iwalk_flags,
 			xfs_inumbers_walk, breq->icount, &ic);
 	xfs_trans_cancel(tp);
 

[PATCH 6.15.y 1/5] xfs: decouple xfs_trans_alloc_empty from xfs_trans_alloc

[Sasha Levin]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit 83a80e95e797a2a6d14bf7983e5e6eecf8f5facb ]

xfs_trans_alloc_empty only shares the very basic transaction structure
allocation and initialization with xfs_trans_alloc.

Split out a new __xfs_trans_alloc helper for that and otherwise decouple
xfs_trans_alloc_empty from xfs_trans_alloc.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Stable-dep-of: d2845519b072 ("xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/xfs/xfs_trans.c | 52 +++++++++++++++++++++++++---------------------
 1 file changed, 28 insertions(+), 24 deletions(-)

diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index c6657072361a..db8f8b1b5d68 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -241,6 +241,28 @@ xfs_trans_reserve(
 	return error;
 }
 
+static struct xfs_trans *
+__xfs_trans_alloc(
+	struct xfs_mount	*mp,
+	uint			flags)
+{
+	struct xfs_trans	*tp;
+
+	ASSERT(!(flags & XFS_TRANS_RES_FDBLKS) || xfs_has_lazysbcount(mp));
+
+	tp = kmem_cache_zalloc(xfs_trans_cache, GFP_KERNEL | __GFP_NOFAIL);
+	if (!(flags & XFS_TRANS_NO_WRITECOUNT))
+		sb_start_intwrite(mp->m_super);
+	xfs_trans_set_context(tp);
+	tp->t_flags = flags;
+	tp->t_mountp = mp;
+	INIT_LIST_HEAD(&tp->t_items);
+	INIT_LIST_HEAD(&tp->t_busy);
+	INIT_LIST_HEAD(&tp->t_dfops);
+	tp->t_highest_agno = NULLAGNUMBER;
+	return tp;
+}
+
 int
 xfs_trans_alloc(
 	struct xfs_mount	*mp,
@@ -254,33 +276,16 @@ xfs_trans_alloc(
 	bool			want_retry = true;
 	int			error;
 
+	ASSERT(resp->tr_logres > 0);
+
 	/*
 	 * Allocate the handle before we do our freeze accounting and setting up
 	 * GFP_NOFS allocation context so that we avoid lockdep false positives
 	 * by doing GFP_KERNEL allocations inside sb_start_intwrite().
 	 */
 retry:
-	tp = kmem_cache_zalloc(xfs_trans_cache, GFP_KERNEL | __GFP_NOFAIL);
-	if (!(flags & XFS_TRANS_NO_WRITECOUNT))
-		sb_start_intwrite(mp->m_super);
-	xfs_trans_set_context(tp);
-
-	/*
-	 * Zero-reservation ("empty") transactions can't modify anything, so
-	 * they're allowed to run while we're frozen.
-	 */
-	WARN_ON(resp->tr_logres > 0 &&
-		mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE);
-	ASSERT(!(flags & XFS_TRANS_RES_FDBLKS) ||
-	       xfs_has_lazysbcount(mp));
-
-	tp->t_flags = flags;
-	tp->t_mountp = mp;
-	INIT_LIST_HEAD(&tp->t_items);
-	INIT_LIST_HEAD(&tp->t_busy);
-	INIT_LIST_HEAD(&tp->t_dfops);
-	tp->t_highest_agno = NULLAGNUMBER;
-
+	WARN_ON(mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE);
+	tp = __xfs_trans_alloc(mp, flags);
 	error = xfs_trans_reserve(tp, resp, blocks, rtextents);
 	if (error == -ENOSPC && want_retry) {
 		xfs_trans_cancel(tp);
@@ -329,9 +334,8 @@ xfs_trans_alloc_empty(
 	struct xfs_mount		*mp,
 	struct xfs_trans		**tpp)
 {
-	struct xfs_trans_res		resv = {0};
-
-	return xfs_trans_alloc(mp, &resv, 0, 0, XFS_TRANS_NO_WRITECOUNT, tpp);
+	*tpp = __xfs_trans_alloc(mp, XFS_TRANS_NO_WRITECOUNT);
+	return 0;
 }
 
 /*
-- 
2.50.1

[PATCH 6.15.y 2/5] xfs: return the allocated transaction from xfs_trans_alloc_empty

[Sasha Levin]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit d8e1ea43e5a314bc01ec059ce93396639dcf9112 ]

xfs_trans_alloc_empty can't return errors, so return the allocated
transaction directly instead of an output double pointer argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Stable-dep-of: d2845519b072 ("xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/xfs/libxfs/xfs_refcount.c |  4 +---
 fs/xfs/scrub/common.c        |  3 ++-
 fs/xfs/scrub/repair.c        | 12 ++----------
 fs/xfs/scrub/scrub.c         |  5 +----
 fs/xfs/xfs_attr_item.c       |  5 +----
 fs/xfs/xfs_discard.c         | 12 +++---------
 fs/xfs/xfs_fsmap.c           |  4 +---
 fs/xfs/xfs_icache.c          |  5 +----
 fs/xfs/xfs_inode.c           |  7 ++-----
 fs/xfs/xfs_itable.c          | 18 +++---------------
 fs/xfs/xfs_iwalk.c           | 11 +++--------
 fs/xfs/xfs_notify_failure.c  |  5 +----
 fs/xfs/xfs_qm.c              | 10 ++--------
 fs/xfs/xfs_rtalloc.c         | 13 +++----------
 fs/xfs/xfs_trans.c           |  8 +++-----
 fs/xfs/xfs_trans.h           |  3 +--
 fs/xfs/xfs_zone_gc.c         |  5 +----
 17 files changed, 31 insertions(+), 99 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c
index cebe83f7842a..897784037483 100644
--- a/fs/xfs/libxfs/xfs_refcount.c
+++ b/fs/xfs/libxfs/xfs_refcount.c
@@ -2099,9 +2099,7 @@ xfs_refcount_recover_cow_leftovers(
 	 * recording the CoW debris we cancel the (empty) transaction
 	 * and everything goes away cleanly.
 	 */
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
+	tp = xfs_trans_alloc_empty(mp);
 
 	if (isrt) {
 		xfs_rtgroup_lock(to_rtg(xg), XFS_RTGLOCK_REFCOUNT);
diff --git a/fs/xfs/scrub/common.c b/fs/xfs/scrub/common.c
index 28ad341df8ee..d080f4e6e9d8 100644
--- a/fs/xfs/scrub/common.c
+++ b/fs/xfs/scrub/common.c
@@ -870,7 +870,8 @@ int
 xchk_trans_alloc_empty(
 	struct xfs_scrub	*sc)
 {
-	return xfs_trans_alloc_empty(sc->mp, &sc->tp);
+	sc->tp = xfs_trans_alloc_empty(sc->mp);
+	return 0;
 }
 
 /*
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index f8f9ed30f56b..f7f80ff32afc 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -1279,18 +1279,10 @@ xrep_trans_alloc_hook_dummy(
 	void			**cookiep,
 	struct xfs_trans	**tpp)
 {
-	int			error;
-
 	*cookiep = current->journal_info;
 	current->journal_info = NULL;
-
-	error = xfs_trans_alloc_empty(mp, tpp);
-	if (!error)
-		return 0;
-
-	current->journal_info = *cookiep;
-	*cookiep = NULL;
-	return error;
+	*tpp = xfs_trans_alloc_empty(mp);
+	return 0;
 }
 
 /* Cancel a dummy transaction used by a live update hook function. */
diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c
index 9908850bf76f..9248da893619 100644
--- a/fs/xfs/scrub/scrub.c
+++ b/fs/xfs/scrub/scrub.c
@@ -878,10 +878,7 @@ xchk_scrubv_open_by_handle(
 	struct xfs_inode		*ip;
 	int				error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return NULL;
-
+	tp = xfs_trans_alloc_empty(mp);
 	error = xfs_iget(mp, tp, head->svh_ino, XCHK_IGET_FLAGS, 0, &ip);
 	xfs_trans_cancel(tp);
 	if (error)
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c
index f683b7a9323f..da1e11f38eb0 100644
--- a/fs/xfs/xfs_attr_item.c
+++ b/fs/xfs/xfs_attr_item.c
@@ -616,10 +616,7 @@ xfs_attri_iread_extents(
 	struct xfs_trans		*tp;
 	int				error;
 
-	error = xfs_trans_alloc_empty(ip->i_mount, &tp);
-	if (error)
-		return error;
-
+	tp = xfs_trans_alloc_empty(ip->i_mount);
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 	error = xfs_iread_extents(tp, ip, XFS_ATTR_FORK);
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c
index 94d0873bcd62..d8e903d203c5 100644
--- a/fs/xfs/xfs_discard.c
+++ b/fs/xfs/xfs_discard.c
@@ -204,9 +204,7 @@ xfs_trim_gather_extents(
 	 */
 	xfs_log_force(mp, XFS_LOG_SYNC);
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
+	tp = xfs_trans_alloc_empty(mp);
 
 	error = xfs_alloc_read_agf(pag, tp, 0, &agbp);
 	if (error)
@@ -598,9 +596,7 @@ xfs_trim_rtextents(
 	struct xfs_trans	*tp;
 	int			error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
+	tp = xfs_trans_alloc_empty(mp);
 
 	/*
 	 * Walk the free ranges between low and high.  The query_range function
@@ -716,9 +712,7 @@ xfs_trim_rtgroup_extents(
 	struct xfs_trans	*tp;
 	int			error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
+	tp = xfs_trans_alloc_empty(mp);
 
 	/*
 	 * Walk the free ranges between low and high.  The query_range function
diff --git a/fs/xfs/xfs_fsmap.c b/fs/xfs/xfs_fsmap.c
index 414b27a86458..af68c7de8ee8 100644
--- a/fs/xfs/xfs_fsmap.c
+++ b/fs/xfs/xfs_fsmap.c
@@ -1270,9 +1270,7 @@ xfs_getfsmap(
 		 * buffer locking abilities to detect cycles in the rmapbt
 		 * without deadlocking.
 		 */
-		error = xfs_trans_alloc_empty(mp, &tp);
-		if (error)
-			break;
+		tp = xfs_trans_alloc_empty(mp);
 
 		info.dev = handlers[i].dev;
 		info.last = false;
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 726e29b837e6..1781b600cde3 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -893,10 +893,7 @@ xfs_metafile_iget(
 	struct xfs_trans	*tp;
 	int			error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
-
+	tp = xfs_trans_alloc_empty(mp);
 	error = xfs_trans_metafile_iget(tp, ino, metafile_type, ipp);
 	xfs_trans_cancel(tp);
 	return error;
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index ee3e0f284287..866d73b42a96 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2932,12 +2932,9 @@ xfs_inode_reload_unlinked(
 	struct xfs_inode	*ip)
 {
 	struct xfs_trans	*tp;
-	int			error;
-
-	error = xfs_trans_alloc_empty(ip->i_mount, &tp);
-	if (error)
-		return error;
+	int			error = 0;
 
+	tp = xfs_trans_alloc_empty(ip->i_mount);
 	xfs_ilock(ip, XFS_ILOCK_SHARED);
 	if (xfs_inode_unlinked_incomplete(ip))
 		error = xfs_inode_reload_unlinked_bucket(tp, ip);
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 1fa1c0564b0c..c8c9b8d8309f 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -239,14 +239,10 @@ xfs_bulkstat_one(
 	 * Grab an empty transaction so that we can use its recursive buffer
 	 * locking abilities to detect cycles in the inobt without deadlocking.
 	 */
-	error = xfs_trans_alloc_empty(breq->mp, &tp);
-	if (error)
-		goto out;
-
+	tp = xfs_trans_alloc_empty(breq->mp);
 	error = xfs_bulkstat_one_int(breq->mp, breq->idmap, tp,
 			breq->startino, &bc);
 	xfs_trans_cancel(tp);
-out:
 	kfree(bc.buf);
 
 	/*
@@ -331,17 +327,13 @@ xfs_bulkstat(
 	 * Grab an empty transaction so that we can use its recursive buffer
 	 * locking abilities to detect cycles in the inobt without deadlocking.
 	 */
-	error = xfs_trans_alloc_empty(breq->mp, &tp);
-	if (error)
-		goto out;
-
+	tp = xfs_trans_alloc_empty(breq->mp);
 	if (breq->flags & XFS_IBULK_SAME_AG)
 		iwalk_flags |= XFS_IWALK_SAME_AG;
 
 	error = xfs_iwalk(breq->mp, tp, breq->startino, iwalk_flags,
 			xfs_bulkstat_iwalk, breq->icount, &bc);
 	xfs_trans_cancel(tp);
-out:
 	kfree(bc.buf);
 
 	/*
@@ -464,14 +456,10 @@ xfs_inumbers(
 	 * Grab an empty transaction so that we can use its recursive buffer
 	 * locking abilities to detect cycles in the inobt without deadlocking.
 	 */
-	error = xfs_trans_alloc_empty(breq->mp, &tp);
-	if (error)
-		goto out;
-
+	tp = xfs_trans_alloc_empty(breq->mp);
 	error = xfs_inobt_walk(breq->mp, tp, breq->startino, breq->flags,
 			xfs_inumbers_walk, breq->icount, &ic);
 	xfs_trans_cancel(tp);
-out:
 
 	/*
 	 * We found some inode groups, so clear the error status and return
diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c
index 7db3ece370b1..c1c31d1a8e21 100644
--- a/fs/xfs/xfs_iwalk.c
+++ b/fs/xfs/xfs_iwalk.c
@@ -377,11 +377,8 @@ xfs_iwalk_run_callbacks(
 	if (!has_more)
 		return 0;
 
-	if (iwag->drop_trans) {
-		error = xfs_trans_alloc_empty(mp, &iwag->tp);
-		if (error)
-			return error;
-	}
+	if (iwag->drop_trans)
+		iwag->tp = xfs_trans_alloc_empty(mp);
 
 	/* ...and recreate the cursor just past where we left off. */
 	error = xfs_ialloc_read_agi(iwag->pag, iwag->tp, 0, agi_bpp);
@@ -617,9 +614,7 @@ xfs_iwalk_ag_work(
 	 * Grab an empty transaction so that we can use its recursive buffer
 	 * locking abilities to detect cycles in the inobt without deadlocking.
 	 */
-	error = xfs_trans_alloc_empty(mp, &iwag->tp);
-	if (error)
-		goto out;
+	iwag->tp = xfs_trans_alloc_empty(mp);
 	iwag->drop_trans = 1;
 
 	error = xfs_iwalk_ag(iwag);
diff --git a/fs/xfs/xfs_notify_failure.c b/fs/xfs/xfs_notify_failure.c
index ed8d8ed42f0a..14024fb4feea 100644
--- a/fs/xfs/xfs_notify_failure.c
+++ b/fs/xfs/xfs_notify_failure.c
@@ -280,10 +280,7 @@ xfs_dax_notify_dev_failure(
 		kernel_frozen = xfs_dax_notify_failure_freeze(mp) == 0;
 	}
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		goto out;
-
+	tp = xfs_trans_alloc_empty(mp);
 	start_gno = xfs_fsb_to_gno(mp, start_bno, type);
 	end_gno = xfs_fsb_to_gno(mp, end_bno, type);
 	while ((xg = xfs_group_next_range(mp, xg, start_gno, end_gno, type))) {
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 417439b58785..b89be86d3c45 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -681,10 +681,7 @@ xfs_qm_load_metadir_qinos(
 	struct xfs_trans	*tp;
 	int			error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
-
+	tp = xfs_trans_alloc_empty(mp);
 	error = xfs_dqinode_load_parent(tp, &qi->qi_dirip);
 	if (error == -ENOENT) {
 		/* no quota dir directory, but we'll create one later */
@@ -1803,10 +1800,7 @@ xfs_qm_qino_load(
 	struct xfs_inode	*dp = NULL;
 	int			error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
-
+	tp = xfs_trans_alloc_empty(mp);
 	if (xfs_has_metadir(mp)) {
 		error = xfs_dqinode_load_parent(tp, &dp);
 		if (error)
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 736eb0924573..6907e871fa15 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -729,9 +729,7 @@ xfs_rtginode_ensure(
 	if (rtg->rtg_inodes[type])
 		return 0;
 
-	error = xfs_trans_alloc_empty(rtg_mount(rtg), &tp);
-	if (error)
-		return error;
+	tp = xfs_trans_alloc_empty(rtg_mount(rtg));
 	error = xfs_rtginode_load(rtg, type, tp);
 	xfs_trans_cancel(tp);
 
@@ -1305,9 +1303,7 @@ xfs_growfs_rt_prep_groups(
 	if (!mp->m_rtdirip) {
 		struct xfs_trans	*tp;
 
-		error = xfs_trans_alloc_empty(mp, &tp);
-		if (error)
-			return error;
+		tp = xfs_trans_alloc_empty(mp);
 		error = xfs_rtginode_load_parent(tp);
 		xfs_trans_cancel(tp);
 
@@ -1674,10 +1670,7 @@ xfs_rtmount_inodes(
 	struct xfs_rtgroup	*rtg = NULL;
 	int			error;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
-
+	tp = xfs_trans_alloc_empty(mp);
 	if (xfs_has_rtgroups(mp) && mp->m_sb.sb_rgcount > 0) {
 		error = xfs_rtginode_load_parent(tp);
 		if (error)
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index db8f8b1b5d68..142bdd408fbe 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -329,13 +329,11 @@ xfs_trans_alloc(
  * where we can be grabbing buffers at the same time that freeze is trying to
  * drain the buffer LRU list.
  */
-int
+struct xfs_trans *
 xfs_trans_alloc_empty(
-	struct xfs_mount		*mp,
-	struct xfs_trans		**tpp)
+	struct xfs_mount		*mp)
 {
-	*tpp = __xfs_trans_alloc(mp, XFS_TRANS_NO_WRITECOUNT);
-	return 0;
+	return __xfs_trans_alloc(mp, XFS_TRANS_NO_WRITECOUNT);
 }
 
 /*
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 2b366851e9a4..a6b10aaeb1f1 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -168,8 +168,7 @@ int		xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
 			struct xfs_trans **tpp);
 int		xfs_trans_reserve_more(struct xfs_trans *tp,
 			unsigned int blocks, unsigned int rtextents);
-int		xfs_trans_alloc_empty(struct xfs_mount *mp,
-			struct xfs_trans **tpp);
+struct xfs_trans *xfs_trans_alloc_empty(struct xfs_mount *mp);
 void		xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
 
 int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
diff --git a/fs/xfs/xfs_zone_gc.c b/fs/xfs/xfs_zone_gc.c
index d613a4094db6..6269a3c6676f 100644
--- a/fs/xfs/xfs_zone_gc.c
+++ b/fs/xfs/xfs_zone_gc.c
@@ -330,10 +330,7 @@ xfs_zone_gc_query(
 	iter->rec_idx = 0;
 	iter->rec_count = 0;
 
-	error = xfs_trans_alloc_empty(mp, &tp);
-	if (error)
-		return error;
-
+	tp = xfs_trans_alloc_empty(mp);
 	xfs_rtgroup_lock(rtg, XFS_RTGLOCK_RMAP);
 	cur = xfs_rtrmapbt_init_cursor(tp, rtg);
 	error = xfs_rmap_query_range(cur, &ri_low, &ri_high,
-- 
2.50.1

[PATCH 6.15.y 3/5] xfs: improve the comments in xfs_select_zone_nowait

[Sasha Levin]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit 60e02f956d77af31b85ed4e73abf85d5f12d0a98 ]

The top of the function comment is outdated, and the parts still correct
duplicate information in comment inside the function.  Remove the top of
the function comment and instead improve a comment inside the function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Stable-dep-of: d2845519b072 ("xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/xfs/xfs_zone_alloc.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/xfs_zone_alloc.c b/fs/xfs/xfs_zone_alloc.c
index d509e49b2aaa..e4db7f85f3c7 100644
--- a/fs/xfs/xfs_zone_alloc.c
+++ b/fs/xfs/xfs_zone_alloc.c
@@ -653,13 +653,6 @@ static inline bool xfs_zoned_pack_tight(struct xfs_inode *ip)
 		!(ip->i_diflags & XFS_DIFLAG_APPEND);
 }
 
-/*
- * Pick a new zone for writes.
- *
- * If we aren't using up our budget of open zones just open a new one from the
- * freelist.  Else try to find one that matches the expected data lifetime.  If
- * we don't find one that is good pick any zone that is available.
- */
 static struct xfs_open_zone *
 xfs_select_zone_nowait(
 	struct xfs_mount	*mp,
@@ -687,7 +680,8 @@ xfs_select_zone_nowait(
 		goto out_unlock;
 
 	/*
-	 * See if we can open a new zone and use that.
+	 * See if we can open a new zone and use that so that data for different
+	 * files is mixed as little as possible.
 	 */
 	oz = xfs_try_open_zone(mp, write_hint);
 	if (oz)
-- 
2.50.1

[PATCH 6.15.y 4/5] xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags

[Sasha Levin]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit d2845519b0723c5d5a0266cbf410495f9b8fd65c ]

Fix up xfs_inumbers to now pass in the XFS_IBULK* flags into the flags
argument to xfs_inobt_walk, which expects the XFS_IWALK* flags.

Currently passing the wrong flags works for non-debug builds because
the only XFS_IWALK* flag has the same encoding as the corresponding
XFS_IBULK* flag, but in debug builds it can trigger an assert that no
incorrect flag is passed.  Instead just extra the relevant flag.

Fixes: 5b35d922c52798 ("xfs: Decouple XFS_IBULK flags from XFS_IWALK flags")
Cc: <stable@vger.kernel.org> # v5.19
Reported-by: cen zhang <zzzccc427@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/xfs/xfs_itable.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index c8c9b8d8309f..5116842420b2 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -447,17 +447,21 @@ xfs_inumbers(
 		.breq		= breq,
 	};
 	struct xfs_trans	*tp;
+	unsigned int		iwalk_flags = 0;
 	int			error = 0;
 
 	if (xfs_bulkstat_already_done(breq->mp, breq->startino))
 		return 0;
 
+	if (breq->flags & XFS_IBULK_SAME_AG)
+		iwalk_flags |= XFS_IWALK_SAME_AG;
+
 	/*
 	 * Grab an empty transaction so that we can use its recursive buffer
 	 * locking abilities to detect cycles in the inobt without deadlocking.
 	 */
 	tp = xfs_trans_alloc_empty(breq->mp);
-	error = xfs_inobt_walk(breq->mp, tp, breq->startino, breq->flags,
+	error = xfs_inobt_walk(breq->mp, tp, breq->startino, iwalk_flags,
 			xfs_inumbers_walk, breq->icount, &ic);
 	xfs_trans_cancel(tp);
 
-- 
2.50.1

[PATCH 6.15.y 5/5] xfs: Remove unused label in xfs_dax_notify_dev_failure

[Sasha Levin]

From: Alan Huang <mmpgouride@gmail.com>

[ Upstream commit 8c10b04f9fc1760cb79068073686d8866e59d40f ]

Fixes: e967dc40d501 ("xfs: return the allocated transaction from xfs_trans_alloc_empty")
Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/xfs/xfs_notify_failure.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/xfs/xfs_notify_failure.c b/fs/xfs/xfs_notify_failure.c
index 14024fb4feea..6853a7e45ebd 100644
--- a/fs/xfs/xfs_notify_failure.c
+++ b/fs/xfs/xfs_notify_failure.c
@@ -351,7 +351,6 @@ xfs_dax_notify_dev_failure(
 			error = -EFSCORRUPTED;
 	}
 
-out:
 	/* Thaw the fs if it has been frozen before. */
 	if (mf_flags & MF_MEM_PRE_REMOVE)
 		xfs_dax_notify_failure_thaw(mp, kernel_frozen);
-- 
2.50.1