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| author | James Morris <james.l.morris@oracle.com> | 2017-03-28 02:03:35 +0200 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2017-03-28 02:03:35 +0200 |
| commit | 840c91dc6a13b160f5b6e5c79c430dffac11c945 (patch) | |
| tree | 5309824f4531b2611a575e7971a935d2e95feb02 /fs/iomap.c | |
| parent | LSM: Initialize security_hook_heads upon registration. (diff) | |
| parent | Linux 4.11-rc4 (diff) | |
| download | linux-840c91dc6a13b160f5b6e5c79c430dffac11c945.tar.xz linux-840c91dc6a13b160f5b6e5c79c430dffac11c945.zip | |
update to v4.11-rc4 due to memory corruption bug in rc2
Diffstat (limited to 'fs/iomap.c')
| -rw-r--r-- | fs/iomap.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/iomap.c b/fs/iomap.c index 3ca1a8e44135..141c3cd55a8b 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -846,7 +846,8 @@ iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, struct address_space *mapping = iocb->ki_filp->f_mapping; struct inode *inode = file_inode(iocb->ki_filp); size_t count = iov_iter_count(iter); - loff_t pos = iocb->ki_pos, end = iocb->ki_pos + count - 1, ret = 0; + loff_t pos = iocb->ki_pos, start = pos; + loff_t end = iocb->ki_pos + count - 1, ret = 0; unsigned int flags = IOMAP_DIRECT; struct blk_plug plug; struct iomap_dio *dio; @@ -887,12 +888,12 @@ iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, } if (mapping->nrpages) { - ret = filemap_write_and_wait_range(mapping, iocb->ki_pos, end); + ret = filemap_write_and_wait_range(mapping, start, end); if (ret) goto out_free_dio; ret = invalidate_inode_pages2_range(mapping, - iocb->ki_pos >> PAGE_SHIFT, end >> PAGE_SHIFT); + start >> PAGE_SHIFT, end >> PAGE_SHIFT); WARN_ON_ONCE(ret); ret = 0; } @@ -941,6 +942,8 @@ iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, __set_current_state(TASK_RUNNING); } + ret = iomap_dio_complete(dio); + /* * Try again to invalidate clean pages which might have been cached by * non-direct readahead, or faulted in by get_user_pages() if the source @@ -949,12 +952,12 @@ iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, * this invalidation fails, tough, the write still worked... */ if (iov_iter_rw(iter) == WRITE && mapping->nrpages) { - ret = invalidate_inode_pages2_range(mapping, - iocb->ki_pos >> PAGE_SHIFT, end >> PAGE_SHIFT); - WARN_ON_ONCE(ret); + int err = invalidate_inode_pages2_range(mapping, + start >> PAGE_SHIFT, end >> PAGE_SHIFT); + WARN_ON_ONCE(err); } - return iomap_dio_complete(dio); + return ret; out_free_dio: kfree(dio); |