diff options
| author | Ingo Molnar <mingo@kernel.org> | 2021-03-19 12:10:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-03-19 12:10:49 +0100 |
| commit | 01438749e36bfe53ea25c91568019be775a9782e (patch) | |
| tree | f91f5abae2004863afda683589d034dcd2000ab8 /fs/block_dev.c | |
| parent | 4faf62b1ef1a9367f7dcf8b7ce509980dfdcee83 (diff) | |
| parent | bee645788e07eea63055d261d2884ea45c2ba857 (diff) | |
Merge branch 'locking/urgent' into locking/core, to pick up dependent commits
We are applying further, lower-prio fixes on top of two ww_mutex fixes in locking/urgent.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 4aa1f88d5bf8..92ed7d5df677 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -118,13 +118,22 @@ int truncate_bdev_range(struct block_device *bdev, fmode_t mode, if (!(mode & FMODE_EXCL)) { int err = bd_prepare_to_claim(bdev, truncate_bdev_range); if (err) - return err; + goto invalidate; } truncate_inode_pages_range(bdev->bd_inode->i_mapping, lstart, lend); if (!(mode & FMODE_EXCL)) bd_abort_claiming(bdev, truncate_bdev_range); return 0; + +invalidate: + /* + * Someone else has handle exclusively open. Try invalidating instead. + * The 'end' argument is inclusive so the rounding is safe. + */ + return invalidate_inode_pages2_range(bdev->bd_inode->i_mapping, + lstart >> PAGE_SHIFT, + lend >> PAGE_SHIFT); } static void set_init_blocksize(struct block_device *bdev) @@ -423,7 +432,7 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, dio->size += bio->bi_iter.bi_size; pos += bio->bi_iter.bi_size; - nr_pages = bio_iov_vecs_to_alloc(iter, BIO_MAX_PAGES); + nr_pages = bio_iov_vecs_to_alloc(iter, BIO_MAX_VECS); if (!nr_pages) { bool polled = false; @@ -491,8 +500,8 @@ blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter) if (!iov_iter_count(iter)) return 0; - nr_pages = bio_iov_vecs_to_alloc(iter, BIO_MAX_PAGES + 1); - if (is_sync_kiocb(iocb) && nr_pages <= BIO_MAX_PAGES) + nr_pages = bio_iov_vecs_to_alloc(iter, BIO_MAX_VECS + 1); + if (is_sync_kiocb(iocb) && nr_pages <= BIO_MAX_VECS) return __blkdev_direct_IO_simple(iocb, iter, nr_pages); return __blkdev_direct_IO(iocb, iter, bio_max_segs(nr_pages)); |