diff options
author | Michel Lespinasse <walken@google.com> | 2020-06-09 07:33:25 +0300 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 19:39:14 +0300 |
commit | d8ed45c5dcd455fc5848d47f86883a1b872ac0d0 (patch) | |
tree | f9270b32da5f3f7be73b086c99d3dfc29a13161a /arch/s390/kvm | |
parent | 0adf65f53aae86aa86d8dccada02890545de8938 (diff) | |
download | linux-d8ed45c5dcd455fc5848d47f86883a1b872ac0d0.tar.xz |
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
This change converts the existing mmap_sem rwsem calls to use the new mmap
locking API instead.
The change is generated using coccinelle with the following rule:
// spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir .
@@
expression mm;
@@
(
-init_rwsem
+mmap_init_lock
|
-down_write
+mmap_write_lock
|
-down_write_killable
+mmap_write_lock_killable
|
-down_write_trylock
+mmap_write_trylock
|
-up_write
+mmap_write_unlock
|
-downgrade_write
+mmap_write_downgrade
|
-down_read
+mmap_read_lock
|
-down_read_killable
+mmap_read_lock_killable
|
-down_read_trylock
+mmap_read_trylock
|
-up_read
+mmap_read_unlock
)
-(&mm->mmap_sem)
+(mm)
Signed-off-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Liam Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ying Han <yinghan@google.com>
Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r-- | arch/s390/kvm/gaccess.c | 4 | ||||
-rw-r--r-- | arch/s390/kvm/interrupt.c | 4 | ||||
-rw-r--r-- | arch/s390/kvm/kvm-s390.c | 28 | ||||
-rw-r--r-- | arch/s390/kvm/priv.c | 32 |
4 files changed, 34 insertions, 34 deletions
diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c index 4e6fb34c7d90..6d6b57059493 100644 --- a/arch/s390/kvm/gaccess.c +++ b/arch/s390/kvm/gaccess.c @@ -1173,7 +1173,7 @@ int kvm_s390_shadow_fault(struct kvm_vcpu *vcpu, struct gmap *sg, int dat_protection, fake; int rc; - down_read(&sg->mm->mmap_sem); + mmap_read_lock(sg->mm); /* * We don't want any guest-2 tables to change - so the parent * tables/pointers we read stay valid - unshadowing is however @@ -1202,6 +1202,6 @@ shadow_page: if (!rc) rc = gmap_shadow_page(sg, saddr, __pte(pte.val)); ipte_unlock(vcpu); - up_read(&sg->mm->mmap_sem); + mmap_read_unlock(sg->mm); return rc; } diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index a4d4ca2769bd..1608fd99bbee 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -2767,10 +2767,10 @@ static struct page *get_map_page(struct kvm *kvm, u64 uaddr) { struct page *page = NULL; - down_read(&kvm->mm->mmap_sem); + mmap_read_lock(kvm->mm); get_user_pages_remote(NULL, kvm->mm, uaddr, 1, FOLL_WRITE, &page, NULL, NULL); - up_read(&kvm->mm->mmap_sem); + mmap_read_unlock(kvm->mm); return page; } diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 5c546d27fdae..d0ff26d157bc 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -763,9 +763,9 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) r = -EINVAL; else { r = 0; - down_write(&kvm->mm->mmap_sem); + mmap_write_lock(kvm->mm); kvm->mm->context.allow_gmap_hpage_1m = 1; - up_write(&kvm->mm->mmap_sem); + mmap_write_unlock(kvm->mm); /* * We might have to create fake 4k page * tables. To avoid that the hardware works on @@ -1815,7 +1815,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) if (!keys) return -ENOMEM; - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); srcu_idx = srcu_read_lock(&kvm->srcu); for (i = 0; i < args->count; i++) { hva = gfn_to_hva(kvm, args->start_gfn + i); @@ -1829,7 +1829,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) break; } srcu_read_unlock(&kvm->srcu, srcu_idx); - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (!r) { r = copy_to_user((uint8_t __user *)args->skeydata_addr, keys, @@ -1873,7 +1873,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) goto out; i = 0; - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); srcu_idx = srcu_read_lock(&kvm->srcu); while (i < args->count) { unlocked = false; @@ -1900,7 +1900,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) i++; } srcu_read_unlock(&kvm->srcu, srcu_idx); - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); out: kvfree(keys); return r; @@ -2089,14 +2089,14 @@ static int kvm_s390_get_cmma_bits(struct kvm *kvm, if (!values) return -ENOMEM; - down_read(&kvm->mm->mmap_sem); + mmap_read_lock(kvm->mm); srcu_idx = srcu_read_lock(&kvm->srcu); if (peek) ret = kvm_s390_peek_cmma(kvm, args, values, bufsize); else ret = kvm_s390_get_cmma(kvm, args, values, bufsize); srcu_read_unlock(&kvm->srcu, srcu_idx); - up_read(&kvm->mm->mmap_sem); + mmap_read_unlock(kvm->mm); if (kvm->arch.migration_mode) args->remaining = atomic64_read(&kvm->arch.cmma_dirty_pages); @@ -2146,7 +2146,7 @@ static int kvm_s390_set_cmma_bits(struct kvm *kvm, goto out; } - down_read(&kvm->mm->mmap_sem); + mmap_read_lock(kvm->mm); srcu_idx = srcu_read_lock(&kvm->srcu); for (i = 0; i < args->count; i++) { hva = gfn_to_hva(kvm, args->start_gfn + i); @@ -2161,12 +2161,12 @@ static int kvm_s390_set_cmma_bits(struct kvm *kvm, set_pgste_bits(kvm->mm, hva, mask, pgstev); } srcu_read_unlock(&kvm->srcu, srcu_idx); - up_read(&kvm->mm->mmap_sem); + mmap_read_unlock(kvm->mm); if (!kvm->mm->context.uses_cmm) { - down_write(&kvm->mm->mmap_sem); + mmap_write_lock(kvm->mm); kvm->mm->context.uses_cmm = 1; - up_write(&kvm->mm->mmap_sem); + mmap_write_unlock(kvm->mm); } out: vfree(bits); @@ -2239,9 +2239,9 @@ static int kvm_s390_handle_pv(struct kvm *kvm, struct kvm_pv_cmd *cmd) if (r) break; - down_write(¤t->mm->mmap_sem); + mmap_write_lock(current->mm); r = gmap_mark_unmergeable(); - up_write(¤t->mm->mmap_sem); + mmap_write_unlock(current->mm); if (r) break; diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index b579b77deea6..57e08b0a0a1a 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -270,18 +270,18 @@ static int handle_iske(struct kvm_vcpu *vcpu) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); retry: unlocked = false; - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); rc = get_guest_storage_key(current->mm, vmaddr, &key); if (rc) { rc = fixup_user_fault(current, current->mm, vmaddr, FAULT_FLAG_WRITE, &unlocked); if (!rc) { - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); goto retry; } } - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (rc == -EFAULT) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); if (rc < 0) @@ -317,17 +317,17 @@ static int handle_rrbe(struct kvm_vcpu *vcpu) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); retry: unlocked = false; - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); rc = reset_guest_reference_bit(current->mm, vmaddr); if (rc < 0) { rc = fixup_user_fault(current, current->mm, vmaddr, FAULT_FLAG_WRITE, &unlocked); if (!rc) { - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); goto retry; } } - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (rc == -EFAULT) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); if (rc < 0) @@ -385,7 +385,7 @@ static int handle_sske(struct kvm_vcpu *vcpu) if (kvm_is_error_hva(vmaddr)) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); rc = cond_set_guest_storage_key(current->mm, vmaddr, key, &oldkey, m3 & SSKE_NQ, m3 & SSKE_MR, m3 & SSKE_MC); @@ -395,7 +395,7 @@ static int handle_sske(struct kvm_vcpu *vcpu) FAULT_FLAG_WRITE, &unlocked); rc = !rc ? -EAGAIN : rc; } - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (rc == -EFAULT) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); if (rc < 0) @@ -1091,7 +1091,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu) if (rc) return rc; - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); rc = cond_set_guest_storage_key(current->mm, vmaddr, key, NULL, nq, mr, mc); if (rc < 0) { @@ -1099,7 +1099,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu) FAULT_FLAG_WRITE, &unlocked); rc = !rc ? -EAGAIN : rc; } - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (rc == -EFAULT) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); if (rc == -EAGAIN) @@ -1220,9 +1220,9 @@ static int handle_essa(struct kvm_vcpu *vcpu) * already correct, we do nothing and avoid the lock. */ if (vcpu->kvm->mm->context.uses_cmm == 0) { - down_write(&vcpu->kvm->mm->mmap_sem); + mmap_write_lock(vcpu->kvm->mm); vcpu->kvm->mm->context.uses_cmm = 1; - up_write(&vcpu->kvm->mm->mmap_sem); + mmap_write_unlock(vcpu->kvm->mm); } /* * If we are here, we are supposed to have CMMA enabled in @@ -1239,11 +1239,11 @@ static int handle_essa(struct kvm_vcpu *vcpu) } else { int srcu_idx; - down_read(&vcpu->kvm->mm->mmap_sem); + mmap_read_lock(vcpu->kvm->mm); srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); i = __do_essa(vcpu, orc); srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); - up_read(&vcpu->kvm->mm->mmap_sem); + mmap_read_unlock(vcpu->kvm->mm); if (i < 0) return i; /* Account for the possible extra cbrl entry */ @@ -1251,10 +1251,10 @@ static int handle_essa(struct kvm_vcpu *vcpu) } vcpu->arch.sie_block->cbrlo &= PAGE_MASK; /* reset nceo */ cbrlo = phys_to_virt(vcpu->arch.sie_block->cbrlo); - down_read(&gmap->mm->mmap_sem); + mmap_read_lock(gmap->mm); for (i = 0; i < entries; ++i) __gmap_zap(gmap, cbrlo[i]); - up_read(&gmap->mm->mmap_sem); + mmap_read_unlock(gmap->mm); return 0; } |