ext4: remove unnecessary s_mb_last_start

Since stream allocation does not use ac->ac_f_ex.fe_start, it is set to -1
by default, so the no longer needed sbi->s_mb_last_start is removed.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250714130327.1830534-4-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ea518791b317272136ce0c54e07550d4a1e50bd0..a0908037ced789be8ca27ef890a97353a2a480a6 100644 (file)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1631,7 +1631,6 @@ struct ext4_sb_info {
        unsigned int s_max_dir_size_kb;
        /* where last allocation was done - for stream allocation */
        unsigned long s_mb_last_group;
-       unsigned long s_mb_last_start;
        unsigned int s_mb_prefetch;
        unsigned int s_mb_prefetch_limit;
        unsigned int s_mb_best_avail_max_trim_order;

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index f56ac477c464dc1d1e693560ee927cfe94e12d14..e3a5103e1620e7cf17fcdfdb2e89c1d8883d0544 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2171,7 +2171,6 @@ static void ext4_mb_use_best_found(struct ext4_allocation_context *ac,
        if (ac->ac_flags & EXT4_MB_STREAM_ALLOC) {
                spin_lock(&sbi->s_md_lock);
                sbi->s_mb_last_group = ac->ac_f_ex.fe_group;
-               sbi->s_mb_last_start = ac->ac_f_ex.fe_start;
                spin_unlock(&sbi->s_md_lock);
        }
        /*