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| author | Suman Anna <s-anna@ti.com> | 2021-04-19 17:02:09 -0500 |
|---|---|---|
| committer | Suman Anna <s-anna@ti.com> | 2021-04-20 15:49:01 -0500 |
| commit | 848305ff419af69b2a88f2da081b603f19eb2c09 (patch) | |
| tree | ef7b741e2c40060f5eb1c4635308ddd964089a00 | |
| parent | ebe913b4124e7fcfc20481257e32feb686d3a1b4 (diff) | |
| download | linuxutils-848305ff419af69b2a88f2da081b603f19eb2c09.tar.gz | |
cmemk: Fix usage of mmap_sem for 5.8+ kernels
The mmap_sem locking semantics were abstracted out in preparation for
some scalability work in v5.8 kernel. The mmap_sem field is no longer
defined (renamed), and is abstracted out through newly introduced
mmap_read_{lock,unlock} wrappers in a new mmap_lock.h file in commit
9740ca4e95b4 ("mmap locking API: initial implementation as rwsem
wrappers").
Adopt to these new wrappers to fix the CMEM kernel module build against
these newer kernels.
Signed-off-by: Suman Anna <s-anna@ti.com>
| -rw-r--r-- | src/cmem/module/cmemk.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cmem/module/cmemk.c b/src/cmem/module/cmemk.c index 7e3042b..6295a9e 100644 --- a/src/cmem/module/cmemk.c +++ b/src/cmem/module/cmemk.c @@ -625,12 +625,20 @@ void HeapMem_free(int bi, phys_addr_t block, size_t size) static inline void cmem_mmap_read_lock(struct mm_struct *mm) { +#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 8, 0)) down_read(&mm->mmap_sem); +#else + mmap_read_lock(mm); +#endif } static inline void cmem_mmap_read_unlock(struct mm_struct *mm) { +#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 8, 0)) up_read(&mm->mmap_sem); +#else + mmap_read_unlock(mm); +#endif } /* Traverses the page tables and translates a virtual address to a physical. */ |