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put_and_unmap_page() helper 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-highmem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull put_and_unmap_page() helper from Al Viro:
 "kmap_local_page() conversions in local filesystems keep running into
  kunmap_local_page()+put_page() combinations.  We can keep inventing
  names for identical inline helpers, but it's getting rather
  inconvenient. I've added a trivial helper to linux/highmem.h instead.

  I would've held that back until the merge window, if not for the mess
  it causes in tree topology - I've several branches merging from that
  one, and it's only going to get worse if e.g. ext2 stuff gets picked
  by Jan"

* tag 'pull-highmem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  new helper: put_and_unmap_page()
This commit is contained in:
Linus Torvalds 2023-03-10 19:09:18 -08:00
parent 4831f76247 849ad04cf5
commit d33d4c9e08
1 changed files with 6 additions and 0 deletions
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6
include/linux/highmem.h
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@ -481,4 +481,10 @@ static inline void folio_zero_range(struct folio *folio,
zero_user_segments(&folio->page, start, start + length, 0, 0);
}
static inline void put_and_unmap_page(struct page *page, void *addr)
{
kunmap_local(addr);
put_page(page);
}
#endif /* _LINUX_HIGHMEM_H */