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mm/filemap: fix a typo in comment "unneccssary"->"unnecessary" 

There is a typo in comment, fix it.

Signed-off-by: Ethon Paul <ethp@qq.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Link: http://lkml.kernel.org/r/20200411065141.15936-1-ethp@qq.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ethon Paul 2020-06-04 16:49:22 -07:00 committed by Linus Torvalds
parent 3dc5f032c4
commit ffceeb62fc
1 changed files with 1 additions and 1 deletions
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mm/filemap.c
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@ -1256,7 +1256,7 @@ EXPORT_SYMBOL_GPL(add_page_wait_queue);
* instead.
*
* The read of PG_waiters has to be after (or concurrently with) PG_locked
* being cleared, but a memory barrier should be unneccssary since it is
* being cleared, but a memory barrier should be unnecessary since it is
* in the same byte as PG_locked.
*/
static inline bool clear_bit_unlock_is_negative_byte(long nr, volatile void *mem)