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linux/fs/ceph/file.c
Yan, Zheng e99b0ea393 ceph: try getting buffer capability for readahead/fadvise 
commit 2b1ac852eb upstream.

For readahead/fadvise cases, caller of ceph_readpages does not
hold buffer capability. Pages can be added to page cache while
there is no buffer capability. This can cause data integrity
issue.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-08 07:47:55 +02:00

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