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Subject[PATCH 2/6] staging: erofs: fold in `__update_workgrp_llen'
Date
There is the only one user to use `__update_workgrp_llen'.
Fold it in `z_erofs_vle_work_iter_begin' and cleanup related code.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
---
drivers/staging/erofs/unzip_vle.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index 2b9b313..e820490 100644
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -422,18 +422,6 @@ struct z_erofs_vle_work_finder {
return work;
}

-static inline void __update_workgrp_llen(struct z_erofs_vle_workgroup *grp,
- unsigned int llen)
-{
- while (1) {
- unsigned int orig_llen = grp->llen;
-
- if (orig_llen >= llen || orig_llen ==
- cmpxchg(&grp->llen, orig_llen, llen))
- break;
- }
-}
-
#define builder_is_followed(builder) \
((builder)->role >= Z_EROFS_VLE_WORK_PRIMARY_FOLLOWED)

@@ -466,7 +454,13 @@ static int z_erofs_vle_work_iter_begin(struct z_erofs_vle_work_builder *builder,
repeat:
work = z_erofs_vle_work_lookup(&finder);
if (work != NULL) {
- __update_workgrp_llen(grp, map->m_llen);
+ unsigned int orig_llen;
+
+ /* increase workgroup `llen' if needed */
+ while ((orig_llen = READ_ONCE(grp->llen)) < map->m_llen &&
+ orig_llen != cmpxchg_relaxed(&grp->llen,
+ orig_llen, map->m_llen))
+ cpu_relax();
goto got_it;
}

--
1.9.1
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