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| author | David S. Miller <davem@davemloft.net> | 2020-08-23 11:48:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-08-23 11:48:27 -0700 |
| commit | 7611cbb900b4b9a6fe5eca12fb12645c0576a015 (patch) | |
| tree | 9c8c8e1fa991e4728d25a19b86c974c8e49ee1b7 /fs/buffer.c | |
| parent | d7223aa5867134b9923b42e1245801bd790a1d8c (diff) | |
| parent | cb95712138ec5e480db5160b41172bbc6f6494cc (diff) | |
| download | net-7611cbb900b4b9a6fe5eca12fb12645c0576a015.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 061dd202979d59..d468ed9981e06c 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3157,6 +3157,15 @@ int __sync_dirty_buffer(struct buffer_head *bh, int op_flags) WARN_ON(atomic_read(&bh->b_count) < 1); lock_buffer(bh); if (test_clear_buffer_dirty(bh)) { + /* + * The bh should be mapped, but it might not be if the + * device was hot-removed. Not much we can do but fail the I/O. + */ + if (!buffer_mapped(bh)) { + unlock_buffer(bh); + return -EIO; + } + get_bh(bh); bh->b_end_io = end_buffer_write_sync; ret = submit_bh(REQ_OP_WRITE, op_flags, bh); |