Patch "f2fs: introduce get_available_block_count() for cleanup" has been added to the 6.8-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    f2fs: introduce get_available_block_count() for cleanup

to the 6.8-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-introduce-get_available_block_count-for-cleanup.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit f1f1d7449113b65219164357826b422363fbb1a8
Author: Chao Yu <chao@xxxxxxxxxx>
Date:   Tue Feb 20 11:15:15 2024 +0800

    f2fs: introduce get_available_block_count() for cleanup
    
    [ Upstream commit 0f1c6ede6da9f7c5dd7380b74a64850298279168 ]
    
    There are very similar codes in inc_valid_block_count() and
    inc_valid_node_count() which is used for available user block
    count calculation.
    
    This patch introduces a new helper get_available_block_count()
    to include those common codes, and used it to clean up codes.
    
    Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
    Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
    Stable-dep-of: 043c832371cd ("f2fs: compress: fix error path of inc_valid_block_count()")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e3c231352f6db..f561f75ef98e9 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2251,6 +2251,27 @@ static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
 	return false;
 }
 
+static inline unsigned int get_available_block_count(struct f2fs_sb_info *sbi,
+						struct inode *inode, bool cap)
+{
+	block_t avail_user_block_count;
+
+	avail_user_block_count = sbi->user_block_count -
+					sbi->current_reserved_blocks;
+
+	if (!__allow_reserved_blocks(sbi, inode, cap))
+		avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
+
+	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
+		if (avail_user_block_count > sbi->unusable_block_count)
+			avail_user_block_count -= sbi->unusable_block_count;
+		else
+			avail_user_block_count = 0;
+	}
+
+	return avail_user_block_count;
+}
+
 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
 				 struct inode *inode, blkcnt_t *count, bool partial)
@@ -2276,18 +2297,8 @@ static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
 
 	spin_lock(&sbi->stat_lock);
 	sbi->total_valid_block_count += (block_t)(*count);
-	avail_user_block_count = sbi->user_block_count -
-					sbi->current_reserved_blocks;
+	avail_user_block_count = get_available_block_count(sbi, inode, true);
 
-	if (!__allow_reserved_blocks(sbi, inode, true))
-		avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
-
-	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
-		if (avail_user_block_count > sbi->unusable_block_count)
-			avail_user_block_count -= sbi->unusable_block_count;
-		else
-			avail_user_block_count = 0;
-	}
 	if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
 		if (!partial) {
 			spin_unlock(&sbi->stat_lock);
@@ -2600,7 +2611,8 @@ static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
 					struct inode *inode, bool is_inode)
 {
 	block_t	valid_block_count;
-	unsigned int valid_node_count, user_block_count;
+	unsigned int valid_node_count;
+	unsigned int avail_user_block_count;
 	int err;
 
 	if (is_inode) {
@@ -2620,17 +2632,10 @@ static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
 
 	spin_lock(&sbi->stat_lock);
 
-	valid_block_count = sbi->total_valid_block_count +
-					sbi->current_reserved_blocks + 1;
-
-	if (!__allow_reserved_blocks(sbi, inode, false))
-		valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
-
-	user_block_count = sbi->user_block_count;
-	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
-		user_block_count -= sbi->unusable_block_count;
+	valid_block_count = sbi->total_valid_block_count + 1;
+	avail_user_block_count = get_available_block_count(sbi, inode, false);
 
-	if (unlikely(valid_block_count > user_block_count)) {
+	if (unlikely(valid_block_count > avail_user_block_count)) {
 		spin_unlock(&sbi->stat_lock);
 		goto enospc;
 	}