This is a note to let you know that I've just added the patch titled
f2fs: fix to update iostat correctly in f2fs_filemap_fault()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-to-update-iostat-correctly-in-f2fs_filemap_.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9b72d201e973ab817e165931d2e796bafc12d11d
Author: Chao Yu <chao@xxxxxxxxxx>
Date: Sun Dec 10 19:35:47 2023 +0800
f2fs: fix to update iostat correctly in f2fs_filemap_fault()
[ Upstream commit bb34cc6ca87ff78f9fb5913d7619dc1389554da6 ]
In f2fs_filemap_fault(), it fixes to update iostat info only if
VM_FAULT_LOCKED is tagged in return value of filemap_fault().
Fixes: 8b83ac81f428 ("f2fs: support read iostat")
Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 98960c8d72c0..55818bd510fb 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -42,7 +42,7 @@ static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
ret = filemap_fault(vmf);
up_read(&F2FS_I(inode)->i_mmap_sem);
- if (!ret)
+ if (ret & VM_FAULT_LOCKED)
f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
F2FS_BLKSIZE);
