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mmap locking API: convert mmap_sem comments

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Convert comments that reference mmap_sem to reference mmap_lock instead.

[akpm@linux-foundation.org: fix up linux-next leftovers]
[akpm@linux-foundation.org: s/lockaphore/lock/, per Vlastimil]
[akpm@linux-foundation.org: more linux-next fixups, per Michel]

Signed-off-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
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: Laurent Dufour <ldufour@linux.ibm.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/20200520052908.204642-13-walken@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michel Lespinasse
2020-06-08 21:33:54 -07:00
committed by Linus Torvalds
parent 3e4e28c5a8
commit c1e8d7c6a7
113 changed files with 351 additions and 352 deletions
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10
include/linux/sched/mm.h
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@@ -53,7 +53,7 @@ void mmdrop(struct mm_struct *mm);
/*
* This has to be called after a get_task_mm()/mmget_not_zero()
* followed by taking the mmap_sem for writing before modifying the
* followed by taking the mmap_lock for writing before modifying the
* vmas or anything the coredump pretends not to change from under it.
*
* It also has to be called when mmgrab() is used in the context of
@@ -61,14 +61,14 @@ void mmdrop(struct mm_struct *mm);
* the context of the process to run down_write() on that pinned mm.
*
* NOTE: find_extend_vma() called from GUP context is the only place
* that can modify the "mm" (notably the vm_start/end) under mmap_sem
* that can modify the "mm" (notably the vm_start/end) under mmap_lock
* for reading and outside the context of the process, so it is also
* the only case that holds the mmap_sem for reading that must call
* this function. Generally if the mmap_sem is hold for reading
* the only case that holds the mmap_lock for reading that must call
* this function. Generally if the mmap_lock is hold for reading
* there's no need of this check after get_task_mm()/mmget_not_zero().
*
* This function can be obsoleted and the check can be removed, after
* the coredump code will hold the mmap_sem for writing before
* the coredump code will hold the mmap_lock for writing before
* invoking the ->core_dump methods.
*/
static inline bool mmget_still_valid(struct mm_struct *mm)