On Mon, 2007-07-23 at 09:27 -0500, Adam Litke wrote:
> Hello. hugetlb_instantiation_mutex is an extremely heavy-weight lock
> whose days are numbered (hopefully). It exists primarily to arbitrate
> a race condition where n (n > 1) threads of execution race to satisfy
> the same page fault for a
Hello. hugetlb_instantiation_mutex is an extremely heavy-weight lock
whose days are numbered (hopefully). It exists primarily to arbitrate
a race condition where n (n > 1) threads of execution race to satisfy
the same page fault for a process. Even though only one hugetlb page
is needed, if
On Mon, 2007-07-23 at 16:18 +0800, Zhang, Yanmin wrote:
> Function hugetlb_fault needn't hold spinlock mm->page_table_lock,
> because when hugetlb_fault is called:
> 1) mm->mmap_sem is held already;
> 2) hugetlb_instantiation_mutex is held by hugetlb_fault, which prevents
> other threads/processes
Function hugetlb_fault needn't hold spinlock mm->page_table_lock,
because when hugetlb_fault is called:
1) mm->mmap_sem is held already;
2) hugetlb_instantiation_mutex is held by hugetlb_fault, which prevents
other threads/processes from entering this critical area. It's impossible
for other
Function hugetlb_fault needn't hold spinlock mm-page_table_lock,
because when hugetlb_fault is called:
1) mm-mmap_sem is held already;
2) hugetlb_instantiation_mutex is held by hugetlb_fault, which prevents
other threads/processes from entering this critical area. It's impossible
for other
On Mon, 2007-07-23 at 16:18 +0800, Zhang, Yanmin wrote:
Function hugetlb_fault needn't hold spinlock mm-page_table_lock,
because when hugetlb_fault is called:
1) mm-mmap_sem is held already;
2) hugetlb_instantiation_mutex is held by hugetlb_fault, which prevents
other threads/processes from
Hello. hugetlb_instantiation_mutex is an extremely heavy-weight lock
whose days are numbered (hopefully). It exists primarily to arbitrate
a race condition where n (n 1) threads of execution race to satisfy
the same page fault for a process. Even though only one hugetlb page
is needed, if (n)
On Mon, 2007-07-23 at 09:27 -0500, Adam Litke wrote:
Hello. hugetlb_instantiation_mutex is an extremely heavy-weight lock
whose days are numbered (hopefully). It exists primarily to arbitrate
a race condition where n (n 1) threads of execution race to satisfy
the same page fault for a
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