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Subject[PATCH 1/2] staging: erofs: fix compile error without built-in decompression support
Date
This patch fixes incorrect code snippets due to spilt code
into small patches by mistake.

Link: https://lists.01.org/pipermail/kbuild-all/2018-July/050747.html
Link: https://lists.01.org/pipermail/kbuild-all/2018-July/050750.html
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
---
I test several Kconfig option combinations and all these
combinations are successfully compiled.

Hi Chao,
Could you please review this two patches first before merging
into staging-next tree?

Thanks,
Gao Xiang

drivers/staging/erofs/internal.h | 4 ++--
drivers/staging/erofs/super.c | 2 +-
drivers/staging/erofs/unzip_vle.c | 7 ++++---
drivers/staging/erofs/utils.c | 7 ++++---
4 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h
index 669f93ae6920..367b39fe46e5 100644
--- a/drivers/staging/erofs/internal.h
+++ b/drivers/staging/erofs/internal.h
@@ -260,9 +260,9 @@ static inline void erofs_workstation_cleanup_all(struct super_block *sb)
#ifdef EROFS_FS_HAS_MANAGED_CACHE
#define EROFS_UNALLOCATED_CACHED_PAGE ((void *)0x5F0EF00D)

-extern int try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
+extern int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
struct erofs_workgroup *egrp);
-extern int try_to_free_cached_page(struct address_space *mapping,
+extern int erofs_try_to_free_cached_page(struct address_space *mapping,
struct page *page);
#endif

diff --git a/drivers/staging/erofs/super.c b/drivers/staging/erofs/super.c
index 97da5c8a8ef3..1aec509c805f 100644
--- a/drivers/staging/erofs/super.c
+++ b/drivers/staging/erofs/super.c
@@ -269,7 +269,7 @@ static int managed_cache_releasepage(struct page *page, gfp_t gfp_mask)
BUG_ON(mapping->a_ops != &managed_cache_aops);

if (PagePrivate(page))
- ret = try_to_free_cached_page(mapping, page);
+ ret = erofs_try_to_free_cached_page(mapping, page);

return ret;
}
diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index 7671fe8194ce..0e410a228cd4 100644
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -131,8 +131,8 @@ static bool grab_managed_cache_pages(struct address_space *mapping,
}

/* called by erofs_shrinker to get rid of all compressed_pages */
-int try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
- struct erofs_workgroup *egrp)
+int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
+ struct erofs_workgroup *egrp)
{
struct z_erofs_vle_workgroup *const grp =
container_of(egrp, struct z_erofs_vle_workgroup, obj);
@@ -166,7 +166,8 @@ int try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
return 0;
}

-int try_to_free_cached_page(struct address_space *mapping, struct page *page)
+int erofs_try_to_free_cached_page(struct address_space *mapping,
+ struct page *page)
{
struct erofs_sb_info *const sbi = EROFS_SB(mapping->host->i_sb);
const unsigned int clusterpages = erofs_clusterpages(sbi);
diff --git a/drivers/staging/erofs/utils.c b/drivers/staging/erofs/utils.c
index ee70bb9e1636..595cf90af9bb 100644
--- a/drivers/staging/erofs/utils.c
+++ b/drivers/staging/erofs/utils.c
@@ -160,7 +160,7 @@ unsigned long erofs_shrink_workstation(struct erofs_sb_info *sbi,
}

#ifdef EROFS_FS_HAS_MANAGED_CACHE
- if (try_to_free_all_cached_pages(sbi, grp))
+ if (erofs_try_to_free_all_cached_pages(sbi, grp))
goto skip;

erofs_workgroup_unfreeze(grp, 1);
@@ -247,7 +247,9 @@ unsigned long erofs_shrink_scan(struct shrinker *shrink,
spin_unlock(&erofs_sb_list_lock);
sbi->shrinker_run_no = run_no;

- /* add scan handlers here */
+#ifdef CONFIG_EROFS_FS_ZIP
+ freed += erofs_shrink_workstation(sbi, nr, false);
+#endif

spin_lock(&erofs_sb_list_lock);
/* Get the next list element before we move this one */
@@ -260,7 +262,6 @@ unsigned long erofs_shrink_scan(struct shrinker *shrink,
list_move_tail(&sbi->list, &erofs_sb_list);
mutex_unlock(&sbi->umount_mutex);

- freed += erofs_shrink_workstation(sbi, nr, false);
if (freed >= nr)
break;
}
--
2.17.1
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