diff options
Diffstat (limited to 'fs/erofs/sysfs.c')
| -rw-r--r-- | fs/erofs/sysfs.c | 123 |
1 files changed, 86 insertions, 37 deletions
diff --git a/fs/erofs/sysfs.c b/fs/erofs/sysfs.c index dac252bc9228..1e0658a1d95b 100644 --- a/fs/erofs/sysfs.c +++ b/fs/erofs/sysfs.c @@ -7,11 +7,14 @@ #include <linux/kobject.h> #include "internal.h" +#include "compress.h" enum { attr_feature, + attr_drop_caches, attr_pointer_ui, attr_pointer_bool, + attr_accel, }; enum { @@ -57,11 +60,26 @@ static struct erofs_attr erofs_attr_##_name = { \ #ifdef CONFIG_EROFS_FS_ZIP EROFS_ATTR_RW_UI(sync_decompress, erofs_mount_opts); +EROFS_ATTR_FUNC(drop_caches, 0200); #endif +#ifdef CONFIG_EROFS_FS_ZIP_ACCEL +EROFS_ATTR_FUNC(accel, 0644); +#endif +EROFS_ATTR_RW_UI(dir_ra_bytes, erofs_sb_info); -static struct attribute *erofs_attrs[] = { +static struct attribute *erofs_sb_attrs[] = { #ifdef CONFIG_EROFS_FS_ZIP ATTR_LIST(sync_decompress), + ATTR_LIST(drop_caches), +#endif + ATTR_LIST(dir_ra_bytes), + NULL, +}; +ATTRIBUTE_GROUPS(erofs_sb); + +static struct attribute *erofs_attrs[] = { +#ifdef CONFIG_EROFS_FS_ZIP_ACCEL + ATTR_LIST(accel), #endif NULL, }; @@ -76,6 +94,10 @@ EROFS_ATTR_FEATURE(device_table); EROFS_ATTR_FEATURE(compr_head2); EROFS_ATTR_FEATURE(sb_chksum); EROFS_ATTR_FEATURE(ztailpacking); +EROFS_ATTR_FEATURE(fragments); +EROFS_ATTR_FEATURE(dedupe); +EROFS_ATTR_FEATURE(48bit); +EROFS_ATTR_FEATURE(metabox); static struct attribute *erofs_feat_attrs[] = { ATTR_LIST(zero_padding), @@ -86,6 +108,10 @@ static struct attribute *erofs_feat_attrs[] = { ATTR_LIST(compr_head2), ATTR_LIST(sb_chksum), ATTR_LIST(ztailpacking), + ATTR_LIST(fragments), + ATTR_LIST(dedupe), + ATTR_LIST(48bit), + ATTR_LIST(metabox), NULL, }; ATTRIBUTE_GROUPS(erofs_feat); @@ -119,12 +145,14 @@ static ssize_t erofs_attr_show(struct kobject *kobj, if (!ptr) return 0; return sysfs_emit(buf, "%d\n", *(bool *)ptr); + case attr_accel: + return z_erofs_crypto_show_engines(buf, PAGE_SIZE, '\n'); } return 0; } static ssize_t erofs_attr_store(struct kobject *kobj, struct attribute *attr, - const char *buf, size_t len) + const char *buf, size_t len) { struct erofs_sb_info *sbi = container_of(kobj, struct erofs_sb_info, s_kobj); @@ -159,6 +187,33 @@ static ssize_t erofs_attr_store(struct kobject *kobj, struct attribute *attr, return -EINVAL; *(bool *)ptr = !!t; return len; +#ifdef CONFIG_EROFS_FS_ZIP + case attr_drop_caches: + ret = kstrtoul(skip_spaces(buf), 0, &t); + if (ret) + return ret; + if (t < 1 || t > 3) + return -EINVAL; + + if (t & 2) + z_erofs_shrink_scan(sbi, ~0UL); + if (t & 1) + invalidate_mapping_pages(MNGD_MAPPING(sbi), 0, -1); + return len; +#endif +#ifdef CONFIG_EROFS_FS_ZIP_ACCEL + case attr_accel: + buf = skip_spaces(buf); + z_erofs_crypto_disable_all_engines(); + while (*buf) { + t = strcspn(buf, "\n"); + ret = z_erofs_crypto_enable_engine(buf, t); + if (ret < 0) + return ret; + buf += buf[t] != '\0' ? t + 1 : t; + } + return len; +#endif } return 0; } @@ -175,13 +230,14 @@ static const struct sysfs_ops erofs_attr_ops = { .store = erofs_attr_store, }; -static struct kobj_type erofs_sb_ktype = { - .default_groups = erofs_groups, +static const struct kobj_type erofs_sb_ktype = { + .default_groups = erofs_sb_groups, .sysfs_ops = &erofs_attr_ops, .release = erofs_sb_release, }; -static struct kobj_type erofs_ktype = { +static const struct kobj_type erofs_ktype = { + .default_groups = erofs_groups, .sysfs_ops = &erofs_attr_ops, }; @@ -189,7 +245,7 @@ static struct kset erofs_root = { .kobj = {.ktype = &erofs_ktype}, }; -static struct kobj_type erofs_feat_ktype = { +static const struct kobj_type erofs_feat_ktype = { .default_groups = erofs_feat_groups, .sysfs_ops = &erofs_attr_ops, }; @@ -205,15 +261,12 @@ int erofs_register_sysfs(struct super_block *sb) sbi->s_kobj.kset = &erofs_root; init_completion(&sbi->s_kobj_unregister); - err = kobject_init_and_add(&sbi->s_kobj, &erofs_sb_ktype, NULL, - "%s", sb->s_id); - if (err) - goto put_sb_kobj; - return 0; - -put_sb_kobj: - kobject_put(&sbi->s_kobj); - wait_for_completion(&sbi->s_kobj_unregister); + err = kobject_init_and_add(&sbi->s_kobj, &erofs_sb_ktype, NULL, "%s", + sb->s_sysfs_name); + if (err) { + kobject_put(&sbi->s_kobj); + wait_for_completion(&sbi->s_kobj_unregister); + } return err; } @@ -221,9 +274,17 @@ void erofs_unregister_sysfs(struct super_block *sb) { struct erofs_sb_info *sbi = EROFS_SB(sb); - kobject_del(&sbi->s_kobj); - kobject_put(&sbi->s_kobj); - wait_for_completion(&sbi->s_kobj_unregister); + if (sbi->s_kobj.state_in_sysfs) { + kobject_del(&sbi->s_kobj); + kobject_put(&sbi->s_kobj); + wait_for_completion(&sbi->s_kobj_unregister); + } +} + +void erofs_exit_sysfs(void) +{ + kobject_put(&erofs_feat); + kset_unregister(&erofs_root); } int __init erofs_init_sysfs(void) @@ -233,24 +294,12 @@ int __init erofs_init_sysfs(void) kobject_set_name(&erofs_root.kobj, "erofs"); erofs_root.kobj.parent = fs_kobj; ret = kset_register(&erofs_root); - if (ret) - goto root_err; - - ret = kobject_init_and_add(&erofs_feat, &erofs_feat_ktype, - NULL, "features"); - if (ret) - goto feat_err; - return ret; - -feat_err: - kobject_put(&erofs_feat); - kset_unregister(&erofs_root); -root_err: + if (!ret) { + ret = kobject_init_and_add(&erofs_feat, &erofs_feat_ktype, + NULL, "features"); + if (!ret) + return 0; + erofs_exit_sysfs(); + } return ret; } - -void erofs_exit_sysfs(void) -{ - kobject_put(&erofs_feat); - kset_unregister(&erofs_root); -} |