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| author | Jani Nikula <jani.nikula@intel.com> | 2017-10-18 12:37:31 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-10-18 12:37:31 +0300 |
| commit | 526b96c4f8dceb0104e267c61e5a3b22c538570c (patch) | |
| tree | 8825258c4f678f5ad9fddc0afaf72d640458481a /mm/filemap.c | |
| parent | cb8d50dfb341e9615c8d203a3e6513dae9ff901d (diff) | |
| parent | 40d86701a625eed9e644281b9af228d6a52d8ed9 (diff) | |
Merge drm-upstream/drm-next into drm-intel-next-queued
Needed for timer_setup() and drm_dev_{get,put}() conversions in i915.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 870971e20967..db250d0e0565 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2926,9 +2926,15 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) * we're writing. Either one is a pretty crazy thing to do, * so we don't support it 100%. If this invalidation * fails, tough, the write still worked... + * + * Most of the time we do not need this since dio_complete() will do + * the invalidation for us. However there are some file systems that + * do not end up with dio_complete() being called, so let's not break + * them by removing it completely */ - invalidate_inode_pages2_range(mapping, - pos >> PAGE_SHIFT, end); + if (mapping->nrpages) + invalidate_inode_pages2_range(mapping, + pos >> PAGE_SHIFT, end); if (written > 0) { pos += written; |