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btrfs: minimal conversion to errseq_t writeback error reporting on fsync 

Just check and advance the errseq_t in the file before returning, and
use an errseq_t based check for writeback errors.

Other internal callers of filemap_* functions are left as-is.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
This commit is contained in:
Jeff Layton 2017-07-06 07:02:31 -04:00
parent 1b180274f5
commit 333427a505
1 changed files with 8 additions and 5 deletions
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13
fs/btrfs/file.c
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@ -2011,7 +2011,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_trans_handle *trans;
struct btrfs_log_ctx ctx;
int ret = 0;
int ret = 0, err;
bool full_sync = 0;
u64 len;
@ -2030,7 +2030,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
*/
ret = start_ordered_ops(inode, start, end);
if (ret)
return ret;
goto out;
inode_lock(inode);
atomic_inc(&root->log_batch);
@ -2135,10 +2135,10 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
* An ordered extent might have started before and completed
* already with io errors, in which case the inode was not
* updated and we end up here. So check the inode's mapping
* flags for any errors that might have happened while doing
* writeback of file data.
* for any errors that might have happened since we last
* checked called fsync.
*/
ret = filemap_check_errors(inode->i_mapping);
ret = filemap_check_wb_err(inode->i_mapping, file->f_wb_err);
inode_unlock(inode);
goto out;
}
@ -2227,6 +2227,9 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
ret = btrfs_end_transaction(trans);
}
out:
err = file_check_and_advance_wb_err(file);
if (!ret)
ret = err;
return ret > 0 ? -EIO : ret;
}