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mm: use new helper functions around the i_mmap_mutex

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Convert all open coded mutex_lock/unlock calls to the
i_mmap_[lock/unlock]_write() helpers.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Davidlohr Bueso 2014-12-12 16:54:21 -08:00 • committed by Linus Torvalds
parent 8b28f621be
commit 83cde9e8ba
12 changed files with 40 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

4
fs/hugetlbfs/inode.c
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@ -412,10 +412,10 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
pgoff = offset >> PAGE_SHIFT;
i_size_write(inode, offset);
mutex_lock(&mapping->i_mmap_mutex);
i_mmap_lock_write(mapping);
if (!RB_EMPTY_ROOT(&mapping->i_mmap))
hugetlb_vmtruncate_list(&mapping->i_mmap, pgoff);
mutex_unlock(&mapping->i_mmap_mutex);
i_mmap_unlock_write(mapping);
truncate_hugepages(inode, offset);
return 0;
}