linux-kernel - [PATCH 5.16 0013/1039] f2fs: avoid EINVAL by SBI_NEED

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Date:   Mon, 24 Jan 2022 19:30:02 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 5.16 0013/1039] f2fs: avoid EINVAL by SBI_NEED_FSCK when pinning a file

From: Jaegeuk Kim <jaegeuk@...nel.org>

commit 19bdba5265624ba6b9d9dd936a0c6ccc167cfe80 upstream.

Android OTA failed due to SBI_NEED_FSCK flag when pinning the file. Let's avoid
it since we can do in-place-updates.

Cc: stable@...r.kernel.org
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/f2fs/data.c |    7 +++++--
 fs/f2fs/file.c |   10 +++++-----
 2 files changed, 10 insertions(+), 7 deletions(-)

--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2617,6 +2617,11 @@ bool f2fs_should_update_outplace(struct
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 
+	/* The below cases were checked when setting it. */
+	if (f2fs_is_pinned_file(inode))
+		return false;
+	if (fio && is_sbi_flag_set(sbi, SBI_NEED_FSCK))
+		return true;
 	if (f2fs_lfs_mode(sbi))
 		return true;
 	if (S_ISDIR(inode->i_mode))
@@ -2625,8 +2630,6 @@ bool f2fs_should_update_outplace(struct
 		return true;
 	if (f2fs_is_atomic_file(inode))
 		return true;
-	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
-		return true;
 
 	/* swap file is migrating in aligned write mode */
 	if (is_inode_flag_set(inode, FI_ALIGNED_WRITE))
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3143,17 +3143,17 @@ static int f2fs_ioc_set_pin_file(struct
 
 	inode_lock(inode);
 
-	if (f2fs_should_update_outplace(inode, NULL)) {
-		ret = -EINVAL;
-		goto out;
-	}
-
 	if (!pin) {
 		clear_inode_flag(inode, FI_PIN_FILE);
 		f2fs_i_gc_failures_write(inode, 0);
 		goto done;
 	}
 
+	if (f2fs_should_update_outplace(inode, NULL)) {
+		ret = -EINVAL;
+		goto out;
+	}
+
 	if (f2fs_pin_file_control(inode, false)) {
 		ret = -EAGAIN;
 		goto out;