From 614c3393382fc89c2fd42363b90594b9a666057b Mon Sep 17 00:00:00 2001 From: Maxim Patlasov Date: Tue, 19 Jul 2016 18:12:26 -0700 Subject: fuse: fuse_flush must check mapping->flags for errors [ Upstream commit 9ebce595f63a407c5cec98f98f9da8459b73740a ] fuse_flush() calls write_inode_now() that triggers writeback, but actual writeback will happen later, on fuse_sync_writes(). If an error happens, fuse_writepage_end() will set error bit in mapping->flags. So, we have to check mapping->flags after fuse_sync_writes(). Signed-off-by: Maxim Patlasov Signed-off-by: Miklos Szeredi Fixes: 4d99ff8f12eb ("fuse: Turn writeback cache on") Cc: # v3.15+ Signed-off-by: Sasha Levin --- fs/fuse/file.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'fs/fuse') diff --git a/fs/fuse/file.c b/fs/fuse/file.c index ff10a1ff07b3..5cae35490b37 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -417,6 +417,15 @@ static int fuse_flush(struct file *file, fl_owner_t id) fuse_sync_writes(inode); mutex_unlock(&inode->i_mutex); + if (test_bit(AS_ENOSPC, &file->f_mapping->flags) && + test_and_clear_bit(AS_ENOSPC, &file->f_mapping->flags)) + err = -ENOSPC; + if (test_bit(AS_EIO, &file->f_mapping->flags) && + test_and_clear_bit(AS_EIO, &file->f_mapping->flags)) + err = -EIO; + if (err) + return err; + req = fuse_get_req_nofail_nopages(fc, file); memset(&inarg, 0, sizeof(inarg)); inarg.fh = ff->fh; -- cgit v1.2.3