| Message ID | 20251107144249.435029-7-libaokun@huaweicloud.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | ext4: enable block size larger than page size | expand |
On 11/7/25 15:42, libaokun@huaweicloud.com wrote: > From: Baokun Li <libaokun1@huawei.com> > > This commit introduces the s_min_folio_order field to the ext4_sb_info > structure. This field will store the minimum folio order required by the > current filesystem, laying groundwork for future support of block sizes > greater than PAGE_SIZE. > > Signed-off-by: Baokun Li <libaokun1@huawei.com> > Reviewed-by: Zhang Yi <yi.zhang@huawei.com> > Reviewed-by: Jan Kara <jack@suse.cz> > --- Looks good, Reviewed-by: Pankaj Raghav <p.raghav@samsung.com> > fs/ext4/ext4.h | 3 +++ > fs/ext4/inode.c | 3 ++- > fs/ext4/super.c | 10 +++++----- > 3 files changed, 10 insertions(+), 6 deletions(-) > > diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h > index 3d18e6bf43cf..6fe8cc3bf9a5 100644 > --- a/fs/ext4/ext4.h > +++ b/fs/ext4/ext4.h > @@ -1688,6 +1688,9 @@ struct ext4_sb_info { > /* record the last minlen when FITRIM is called. */ > unsigned long s_last_trim_minblks; > > + /* minimum folio order of a page cache allocation */ > + unsigned int s_min_folio_order; > + > /* Precomputed FS UUID checksum for seeding other checksums */ > __u32 s_csum_seed; > > diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c > index 6fec3aa2268a..9faa0cf77075 100644 > --- a/fs/ext4/inode.c > +++ b/fs/ext4/inode.c > @@ -5181,7 +5181,8 @@ void ext4_set_inode_mapping_order(struct inode *inode) > if (!ext4_should_enable_large_folio(inode)) > return; > > - mapping_set_folio_order_range(inode->i_mapping, 0, > + mapping_set_folio_order_range(inode->i_mapping, > + EXT4_SB(inode->i_sb)->s_min_folio_order, > EXT4_MAX_PAGECACHE_ORDER(inode)); > } > > diff --git a/fs/ext4/super.c b/fs/ext4/super.c > index a9fa824487f9..a6314a3de51d 100644 > --- a/fs/ext4/super.c > +++ b/fs/ext4/super.c > @@ -5107,11 +5107,8 @@ static int ext4_load_super(struct super_block *sb, ext4_fsblk_t *lsb, > * If the default block size is not the same as the real block size, > * we need to reload it. > */ > - if (sb->s_blocksize == blocksize) { > - *lsb = logical_sb_block; > - sbi->s_sbh = bh; > - return 0; > - } > + if (sb->s_blocksize == blocksize) > + goto success; > > /* > * bh must be released before kill_bdev(), otherwise > @@ -5142,6 +5139,9 @@ static int ext4_load_super(struct super_block *sb, ext4_fsblk_t *lsb, > ext4_msg(sb, KERN_ERR, "Magic mismatch, very weird!"); > goto out; > } > + > +success: > + sbi->s_min_folio_order = get_order(blocksize); > *lsb = logical_sb_block; > sbi->s_sbh = bh; > return 0;
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 3d18e6bf43cf..6fe8cc3bf9a5 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1688,6 +1688,9 @@ struct ext4_sb_info { /* record the last minlen when FITRIM is called. */ unsigned long s_last_trim_minblks; + /* minimum folio order of a page cache allocation */ + unsigned int s_min_folio_order; + /* Precomputed FS UUID checksum for seeding other checksums */ __u32 s_csum_seed; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 6fec3aa2268a..9faa0cf77075 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5181,7 +5181,8 @@ void ext4_set_inode_mapping_order(struct inode *inode) if (!ext4_should_enable_large_folio(inode)) return; - mapping_set_folio_order_range(inode->i_mapping, 0, + mapping_set_folio_order_range(inode->i_mapping, + EXT4_SB(inode->i_sb)->s_min_folio_order, EXT4_MAX_PAGECACHE_ORDER(inode)); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index a9fa824487f9..a6314a3de51d 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5107,11 +5107,8 @@ static int ext4_load_super(struct super_block *sb, ext4_fsblk_t *lsb, * If the default block size is not the same as the real block size, * we need to reload it. */ - if (sb->s_blocksize == blocksize) { - *lsb = logical_sb_block; - sbi->s_sbh = bh; - return 0; - } + if (sb->s_blocksize == blocksize) + goto success; /* * bh must be released before kill_bdev(), otherwise @@ -5142,6 +5139,9 @@ static int ext4_load_super(struct super_block *sb, ext4_fsblk_t *lsb, ext4_msg(sb, KERN_ERR, "Magic mismatch, very weird!"); goto out; } + +success: + sbi->s_min_folio_order = get_order(blocksize); *lsb = logical_sb_block; sbi->s_sbh = bh; return 0;