5a3b4e8000
In the future mm->exe_file will be done without mmap_sem
serialization, thus isolate and reorganize the tile elf
code to make the transition easier. Good users will, make
use of the more standard get_mm_exe_file(), requiring only
holding the mmap_sem to read the value, and relying on reference
counting to make sure that the exe file won't dissappear
underneath us.
The visible effects of this patch are:
o We now take and drop the mmap_sem more often. Instead of
just in arch_setup_additional_pages(), we also do it in:
1) get_mm_exe_file()
2) to get the mm->vm_file and notify the simulator.
[Note that 1) will disappear once we change the locking
rules for exe_file.]
o We avoid getting a free page and doing d_path() while
holding the mmap_sem. This requires reordering the checks.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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|---|---|---|
| .. | ||
| elf.c | ||
| extable.c | ||
| fault.c | ||
| highmem.c | ||
| homecache.c | ||
| hugetlbpage.c | ||
| init.c | ||
| Makefile | ||
| migrate_32.S | ||
| migrate_64.S | ||
| migrate.h | ||
| mmap.c | ||
| pgtable.c | ||