Displaying 3 results from an estimated 3 matches for "c85ed7d4e2ce".
2019 Jul 01
0
[PATCH 19/22] mm: always return EBUSY for invalid ranges in hmm_range_{fault, snapshot}
...the code due to the special handling of
EAGAIN that drops the mmap_sem due to the FAULT_FLAG_ALLOW_RETRY logic
in the core vm.
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
mm/hmm.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index c85ed7d4e2ce..d125df698e2b 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -974,7 +974,7 @@ long hmm_range_snapshot(struct hmm_range *range)
do {
/* If range is no longer valid force retry. */
if (!range->valid)
- return -EAGAIN;
+ return -EBUSY;
vma = find_vma(hmm->mm, start);
if (vma == NULL...
2019 Jul 01
0
[PATCH 18/22] mm: return valid info from hmm_range_unregister
...range_valid(range);
-
- hmm_range_unregister(range);
- return ret;
-}
-
/* This is a temporary helper to avoid merge conflict between trees. */
static inline int hmm_vma_fault(struct hmm_mirror *mirror,
struct hmm_range *range, bool block)
diff --git a/mm/hmm.c b/mm/hmm.c
index de35289df20d..c85ed7d4e2ce 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -920,11 +920,14 @@ EXPORT_SYMBOL(hmm_range_register);
*
* Range struct is used to track updates to the CPU page table after a call to
* hmm_range_register(). See include/linux/hmm.h for how to use it.
+ *
+ * Returns if the range was still valid at the...
2019 Jul 01
30
dev_pagemap related cleanups v4
Hi Dan, Jérôme and Jason,
below is a series that cleans up the dev_pagemap interface so that
it is more easily usable, which removes the need to wrap it in hmm
and thus allowing to kill a lot of code
Note: this series is on top of Linux 5.2-rc6 and has some minor
conflicts with the hmm tree that are easy to resolve.
Diffstat summary:
34 files changed, 379 insertions(+), 1016 deletions(-)
Git