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| author | Johannes Weiner <hannes@cmpxchg.org> | 2014-05-22 11:54:17 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-21 09:23:06 -0800 |
| commit | 30fe6d33fe04411ed4e8cf16615cd1ea98c1f88e (patch) | |
| tree | 5c9740d8b36a44cbe8e196b23bc74f946a018830 /mm/filemap.c | |
| parent | 414af56f42cc15271fed99d0acc0f96a3686e458 (diff) | |
mm: madvise: fix MADV_WILLNEED on shmem swapouts
commit 55231e5c898c5c03c14194001e349f40f59bd300 upstream.
MADV_WILLNEED currently does not read swapped out shmem pages back in.
Commit 0cd6144aadd2 ("mm + fs: prepare for non-page entries in page
cache radix trees") made find_get_page() filter exceptional radix tree
entries but failed to convert all find_get_page() callers that WANT
exceptional entries over to find_get_entry(). One of them is shmem swap
readahead in madvise, which now skips over any swap-out records.
Convert it to find_get_entry().
Fixes: 0cd6144aadd2 ("mm + fs: prepare for non-page entries in page cache radix trees")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/filemap.c')
0 files changed, 0 insertions, 0 deletions