6.12-stable review patch. If anyone has any objections, please let me know.
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From: Gao Xiang hsiangkao@linux.alibaba.com
[ Upstream commit fe1e57d44d7f106df9048e815e4862cf63921220 ]
- Rename erofs_init_managed_cache() to z_erofs_init_super(); - Move the initialization of managed_pslots into z_erofs_init_super() too; - Move z_erofs_init_super() and packed inode preparation upwards, before the root inode initialization.
Therefore, the root directory can also be compressible.
Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com Acked-by: Chao Yu chao@kernel.org Link: https://lore.kernel.org/r/20250317054840.3483000-1-hsiangkao@linux.alibaba.c... Signed-off-by: Sasha Levin sashal@kernel.org --- fs/erofs/internal.h | 4 ++-- fs/erofs/super.c | 46 ++++++++++++++++++++++----------------------- fs/erofs/zdata.c | 4 ++-- 3 files changed, 26 insertions(+), 28 deletions(-)
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index edbabb3256c9a..2c11e8f3048e9 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -453,6 +453,7 @@ int __init erofs_init_shrinker(void); void erofs_exit_shrinker(void); int __init z_erofs_init_subsystem(void); void z_erofs_exit_subsystem(void); +int z_erofs_init_super(struct super_block *sb); unsigned long z_erofs_shrink_scan(struct erofs_sb_info *sbi, unsigned long nr_shrink); int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map, @@ -462,7 +463,6 @@ void z_erofs_put_gbuf(void *ptr); int z_erofs_gbuf_growsize(unsigned int nrpages); int __init z_erofs_gbuf_init(void); void z_erofs_gbuf_exit(void); -int erofs_init_managed_cache(struct super_block *sb); int z_erofs_parse_cfgs(struct super_block *sb, struct erofs_super_block *dsb); #else static inline void erofs_shrinker_register(struct super_block *sb) {} @@ -471,7 +471,7 @@ static inline int erofs_init_shrinker(void) { return 0; } static inline void erofs_exit_shrinker(void) {} static inline int z_erofs_init_subsystem(void) { return 0; } static inline void z_erofs_exit_subsystem(void) {} -static inline int erofs_init_managed_cache(struct super_block *sb) { return 0; } +static inline int z_erofs_init_super(struct super_block *sb) { return 0; } #endif /* !CONFIG_EROFS_FS_ZIP */
#ifdef CONFIG_EROFS_FS_BACKED_BY_FILE diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 5b279977c9d5d..3421448fef0e3 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -664,9 +664,16 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) else sb->s_flags &= ~SB_POSIXACL;
-#ifdef CONFIG_EROFS_FS_ZIP - xa_init(&sbi->managed_pslots); -#endif + err = z_erofs_init_super(sb); + if (err) + return err; + + if (erofs_sb_has_fragments(sbi) && sbi->packed_nid) { + inode = erofs_iget(sb, sbi->packed_nid); + if (IS_ERR(inode)) + return PTR_ERR(inode); + sbi->packed_inode = inode; + }
inode = erofs_iget(sb, sbi->root_nid); if (IS_ERR(inode)) @@ -678,24 +685,11 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) iput(inode); return -EINVAL; } - sb->s_root = d_make_root(inode); if (!sb->s_root) return -ENOMEM;
erofs_shrinker_register(sb); - if (erofs_sb_has_fragments(sbi) && sbi->packed_nid) { - sbi->packed_inode = erofs_iget(sb, sbi->packed_nid); - if (IS_ERR(sbi->packed_inode)) { - err = PTR_ERR(sbi->packed_inode); - sbi->packed_inode = NULL; - return err; - } - } - err = erofs_init_managed_cache(sb); - if (err) - return err; - err = erofs_xattr_prefixes_init(sb); if (err) return err; @@ -831,6 +825,16 @@ static int erofs_init_fs_context(struct fs_context *fc) return 0; }
+static void erofs_drop_internal_inodes(struct erofs_sb_info *sbi) +{ + iput(sbi->packed_inode); + sbi->packed_inode = NULL; +#ifdef CONFIG_EROFS_FS_ZIP + iput(sbi->managed_cache); + sbi->managed_cache = NULL; +#endif +} + static void erofs_kill_sb(struct super_block *sb) { struct erofs_sb_info *sbi = EROFS_SB(sb); @@ -840,6 +844,7 @@ static void erofs_kill_sb(struct super_block *sb) kill_anon_super(sb); else kill_block_super(sb); + erofs_drop_internal_inodes(sbi); fs_put_dax(sbi->dif0.dax_dev, NULL); erofs_fscache_unregister_fs(sb); erofs_sb_free(sbi); @@ -850,17 +855,10 @@ static void erofs_put_super(struct super_block *sb) { struct erofs_sb_info *const sbi = EROFS_SB(sb);
- DBG_BUGON(!sbi); - erofs_unregister_sysfs(sb); erofs_shrinker_unregister(sb); erofs_xattr_prefixes_cleanup(sb); -#ifdef CONFIG_EROFS_FS_ZIP - iput(sbi->managed_cache); - sbi->managed_cache = NULL; -#endif - iput(sbi->packed_inode); - sbi->packed_inode = NULL; + erofs_drop_internal_inodes(sbi); erofs_free_dev_context(sbi->devs); sbi->devs = NULL; erofs_fscache_unregister_fs(sb); diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index e5e94afc5af88..74521d7dbee1d 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -663,18 +663,18 @@ static const struct address_space_operations z_erofs_cache_aops = { .invalidate_folio = z_erofs_cache_invalidate_folio, };
-int erofs_init_managed_cache(struct super_block *sb) +int z_erofs_init_super(struct super_block *sb) { struct inode *const inode = new_inode(sb);
if (!inode) return -ENOMEM; - set_nlink(inode, 1); inode->i_size = OFFSET_MAX; inode->i_mapping->a_ops = &z_erofs_cache_aops; mapping_set_gfp_mask(inode->i_mapping, GFP_KERNEL); EROFS_SB(sb)->managed_cache = inode; + xa_init(&EROFS_SB(sb)->managed_pslots); return 0; }