UPSTREAM: f2fs: prevent atomic file from being dirtied before commit

Keep atomic file clean while updating and make it dirtied during commit
in order to avoid unnecessary and excessive inode updates in the previous
fix.

Fixes: 4bf78322346f ("f2fs: mark inode dirty for FI_ATOMIC_COMMITTED flag")

Bug: 372260490
Change-Id: Ia65957ef9632fb8e3664d097ecd0c3af6a768802
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit fccaa81de87e80b1809906f7e438e5766fbdc172)
(cherry picked from commit 57244e8b0beb2d62d872bd7643c32f70b1a9230e)

fs/f2fs/f2fs.h

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index de73cd7..ae07731 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -802,6 +802,7 @@ enum {
 	FI_ALIGNED_WRITE,	/* enable aligned write */
 	FI_COW_FILE,		/* indicate COW file */
 	FI_ATOMIC_COMMITTED,	/* indicate atomic commit completed except disk sync */
+	FI_ATOMIC_DIRTIED,	/* indicate atomic file is dirtied */
 	FI_ATOMIC_REPLACE,	/* indicate atomic replace */
 	FI_MAX,			/* max flag, never be used */
 };
@@ -3045,7 +3046,6 @@ static inline void __mark_inode_dirty_flag(struct inode *inode,
 	case FI_INLINE_DOTS:
 	case FI_PIN_FILE:
 	case FI_COMPRESS_RELEASED:
-	case FI_ATOMIC_COMMITTED:
 		f2fs_mark_inode_dirty_sync(inode, true);
 	}
 }

fs/f2fs/inode.c

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 0e0968b..edb906d 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -32,6 +32,11 @@ void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
 	if (f2fs_inode_dirtied(inode, sync))
 		return;
 
+	if (f2fs_is_atomic_file(inode)) {
+		set_inode_flag(inode, FI_ATOMIC_DIRTIED);
+		return;
+	}
+
 	mark_inode_dirty_sync(inode);
 }
 

fs/f2fs/segment.c

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index b63eb8fb..bf89323 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -199,6 +199,10 @@ void f2fs_abort_atomic_write(struct inode *inode, bool clean)
 	clear_inode_flag(inode, FI_ATOMIC_COMMITTED);
 	clear_inode_flag(inode, FI_ATOMIC_REPLACE);
 	clear_inode_flag(inode, FI_ATOMIC_FILE);
+	if (is_inode_flag_set(inode, FI_ATOMIC_DIRTIED)) {
+		clear_inode_flag(inode, FI_ATOMIC_DIRTIED);
+		f2fs_mark_inode_dirty_sync(inode, true);
+	}
 	stat_dec_atomic_inode(inode);
 
 	F2FS_I(inode)->atomic_write_task = NULL;
@@ -366,6 +370,10 @@ static int __f2fs_commit_atomic_write(struct inode *inode)
 	} else {
 		sbi->committed_atomic_block += fi->atomic_write_cnt;
 		set_inode_flag(inode, FI_ATOMIC_COMMITTED);
+		if (is_inode_flag_set(inode, FI_ATOMIC_DIRTIED)) {
+			clear_inode_flag(inode, FI_ATOMIC_DIRTIED);
+			f2fs_mark_inode_dirty_sync(inode, true);
+		}
 	}
 
 	__complete_revoke_list(inode, &revoke_list, ret ? true : false);