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fuse: fsync() did not return IO errors

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Due to implementation of fuse writeback filemap_write_and_wait_range() does
not catch errors. We have to do this directly after fuse_sync_writes()

Signed-off-by: Alexey Kuznetsov <kuznet@virtuozzo.com>
Signed-off-by: Maxim Patlasov <mpatlasov@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 4d99ff8f12 ("fuse: Turn writeback cache on")
Cc: <stable@vger.kernel.org> # v3.15+
This commit is contained in:
Alexey Kuznetsov 2016-07-19 12:48:01 -07:00 committed by Miklos Szeredi
parent 0f7d93416d
commit ac7f052b9e
1 changed files with 15 additions and 0 deletions
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15
fs/fuse/file.c
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@ -462,6 +462,21 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
goto out;
fuse_sync_writes(inode);
/*
* Due to implementation of fuse writeback
* filemap_write_and_wait_range() does not catch errors.
* We have to do this directly after fuse_sync_writes()
*/
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)
goto out;
err = sync_inode_metadata(inode, 1);
if (err)
goto out;