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author | David S. Miller <davem@davemloft.net> | 2016-08-30 00:54:02 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2016-08-30 00:54:02 -0400 |
commit | 6abdd5f5935fff978f950561f3c5175eb34dad73 (patch) | |
tree | 6f3ed3a4f4af9e74436ec9355ebf8201357f1c40 /fs/xfs/xfs_file.c | |
parent | 0b498a52778368ff501557d68c7b50878ab1701e (diff) | |
parent | e4e98c460ad38c78498622a164fd5ef09a2dc9cb (diff) | |
download | op-kernel-dev-6abdd5f5935fff978f950561f3c5175eb34dad73.zip op-kernel-dev-6abdd5f5935fff978f950561f3c5175eb34dad73.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
All three conflicts were cases of simple overlapping
changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/xfs/xfs_file.c')
-rw-r--r-- | fs/xfs/xfs_file.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index ed95e5b..e612a02 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -741,9 +741,20 @@ xfs_file_dax_write( * page is inserted into the pagecache when we have to serve a write * fault on a hole. It should never be dirtied and can simply be * dropped from the pagecache once we get real data for the page. + * + * XXX: This is racy against mmap, and there's nothing we can do about + * it. dax_do_io() should really do this invalidation internally as + * it will know if we've allocated over a holei for this specific IO and + * if so it needs to update the mapping tree and invalidate existing + * PTEs over the newly allocated range. Remove this invalidation when + * dax_do_io() is fixed up. */ if (mapping->nrpages) { - ret = invalidate_inode_pages2(mapping); + loff_t end = iocb->ki_pos + iov_iter_count(from) - 1; + + ret = invalidate_inode_pages2_range(mapping, + iocb->ki_pos >> PAGE_SHIFT, + end >> PAGE_SHIFT); WARN_ON_ONCE(ret); } |