linux-ext4 - [PATCH v8 17/19] xfs: add pre-content fsnotify hook for write faults

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Message-ID: <9eccdf59a65b72f0a1a5e2f2b9bff8eda2d4f2d9.1731684329.git.josef@toxicpanda.com>
Date: Fri, 15 Nov 2024 10:30:30 -0500
From: Josef Bacik <josef@...icpanda.com>
To: kernel-team@...com,
	linux-fsdevel@...r.kernel.org,
	jack@...e.cz,
	amir73il@...il.com,
	brauner@...nel.org,
	torvalds@...ux-foundation.org,
	viro@...iv.linux.org.uk,
	linux-xfs@...r.kernel.org,
	linux-btrfs@...r.kernel.org,
	linux-mm@...ck.org,
	linux-ext4@...r.kernel.org
Subject: [PATCH v8 17/19] xfs: add pre-content fsnotify hook for write faults

xfs has it's own handling for write faults, so we need to add the
pre-content fsnotify hook for this case.  Reads go through filemap_fault
so they're handled properly there.

Signed-off-by: Josef Bacik <josef@...icpanda.com>
---
 fs/xfs/xfs_file.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index ca47cae5a40a..4fe89770ecb5 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1458,6 +1458,10 @@ xfs_write_fault(
 	unsigned int		lock_mode = XFS_MMAPLOCK_SHARED;
 	vm_fault_t		ret;
 
+	ret = filemap_fsnotify_fault(vmf);
+	if (unlikely(ret))
+		return ret;
+
 	sb_start_pagefault(inode->i_sb);
 	file_update_time(vmf->vma->vm_file);
 
-- 
2.43.0