diff options
| author | Michel Lespinasse <[email protected]> | 2020-06-08 21:33:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-06-09 09:39:14 -0700 |
| commit | aaa2cc56c1cd757efec88a4978ffce4cbf884352 (patch) | |
| tree | 1f3d3e52b98c2c8b1d29978ccbeefc9178b47533 /kernel | |
| parent | 89154dd5313f774d3a592451360b78442571b1f8 (diff) | |
mmap locking API: convert nested write lock sites
Add API for nested write locks and convert the few call sites doing that.
Signed-off-by: Michel Lespinasse <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Reviewed-by: Daniel Jordan <[email protected]>
Reviewed-by: Laurent Dufour <[email protected]>
Reviewed-by: Vlastimil Babka <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Jerome Glisse <[email protected]>
Cc: John Hubbard <[email protected]>
Cc: Liam Howlett <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ying Han <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index d61751ba10dc..142b23645d82 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -501,7 +501,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, /* * Not linked in yet - no deadlock potential: */ - down_write_nested(&mm->mmap_sem, SINGLE_DEPTH_NESTING); + mmap_write_lock_nested(mm, SINGLE_DEPTH_NESTING); /* No ordering required: file already has been exposed. */ RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm)); |