+ ocfs2-abstract-the-zero-extent-list-count-check.patch added to mm-nonmm-unstable branch

+ ocfs2-abstract-the-zero-extent-list-count-check.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: ocfs2: abstract the zero extent list count check
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     ocfs2-abstract-the-zero-extent-list-count-check.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ocfs2-abstract-the-zero-extent-list-count-check.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Joseph Qi <joseph.qi@linux.alibaba.com>
Subject: ocfs2: abstract the zero extent list count check
Date: Mon, 09 Nov 2026 20:21:09 +0800

Fold the l_count == 0 test into a predicate, the first of the extent list
group guarded by ocfs2_dinode_has_extents().

No functional change intended.

Link: https://lore.kernel.org/20261109122121.21473-20-joseph.qi@linux.alibaba.com
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Heming Zhao <heming.zhao@suse.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
---

 fs/ocfs2/inode.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/fs/ocfs2/inode.c~ocfs2-abstract-the-zero-extent-list-count-check
+++ a/fs/ocfs2/inode.c
@@ -260,6 +260,11 @@ static bool ocfs2_dinode_has_refcount_wi
 		!di->i_refcount_loc;
 }
 
+static bool ocfs2_dinode_has_zero_extent_count(struct ocfs2_dinode *di)
+{
+	return le16_to_cpu(di->id2.i_list.l_count) == 0;
+}
+
 void ocfs2_set_inode_flags(struct inode *inode)
 {
 	unsigned int flags = OCFS2_I(inode)->ip_attr;
@@ -1908,7 +1913,7 @@ int ocfs2_validate_inode_block(struct su
 		u16 count = le16_to_cpu(el->l_count);
 		u16 next_free = le16_to_cpu(el->l_next_free_rec);
 
-		if (count == 0) {
+		if (ocfs2_dinode_has_zero_extent_count(di)) {
 			rc = ocfs2_error(sb,
 					 "Invalid dinode %llu: extent list l_count is zero\n",
 					 (unsigned long long)bh->b_blocknr);
_

Patches currently in -mm which might be from joseph.qi@linux.alibaba.com are

ocfs2-exempt-orphaned-dinodes-from-the-zero-nlink-check.patch
ocfs2-abstract-the-zero-nlink-or-mode-dinode-check.patch
ocfs2-abstract-the-dinode-i_blkno-mismatch-check.patch
ocfs2-abstract-the-dinode-ocfs2_valid_fl-check.patch
ocfs2-abstract-the-dinode-fs_generation-mismatch-check.patch
ocfs2-abstract-the-dinode-suballoc-slot-checks.patch
ocfs2-abstract-the-dinode-suballoc-bit-check.patch
ocfs2-abstract-the-dinode-orphaned-slot-check.patch
ocfs2-abstract-the-dinode-dio-orphaned-slot-check.patch
ocfs2-abstract-the-inline-data-dinode-guard-and-cluster-check.patch
ocfs2-abstract-the-inline-data-id_count-bound-check.patch
ocfs2-abstract-the-inline-data-i_size-bound-check.patch
ocfs2-abstract-the-fast-symlink-dinode-guard-and-size-check.patch
ocfs2-abstract-the-fast-symlink-nul-termination-check.patch
ocfs2-abstract-the-chain-list-dinode-guard-and-count-check.patch
ocfs2-abstract-the-chain-list-next-free-record-check.patch
ocfs2-abstract-the-chain-list-bits-per-cluster-check.patch
ocfs2-abstract-the-dinode-refcount-location-check.patch
ocfs2-abstract-the-zero-extent-list-count-check.patch
ocfs2-abstract-the-oversized-extent-list-count-check.patch
ocfs2-abstract-the-extent-list-next-free-record-check.patch
ocfs2-report-unrepairable-corruption-from-online-filecheck-fix.patch
ocfs2-check-dinode-nlink-and-mode-in-online-filecheck.patch
ocfs2-check-dinode-suballoc-slot-in-online-filecheck.patch
ocfs2-check-dinode-suballoc-bit-in-online-filecheck.patch
ocfs2-check-dinode-orphaned-slots-in-online-filecheck.patch
ocfs2-check-inline-data-dinodes-in-online-filecheck.patch
ocfs2-check-fast-symlink-dinodes-in-online-filecheck.patch
ocfs2-check-chain-list-dinodes-in-online-filecheck.patch
ocfs2-check-dinode-refcount-location-in-online-filecheck.patch
ocfs2-check-extent-list-dinodes-in-online-filecheck.patch