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Diffstat (limited to 'fs/xfs/xfs_buf.c')
-rw-r--r--fs/xfs/xfs_buf.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index a046149e6099..170d6c0afe71 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1008,6 +1008,13 @@ xfs_buf_ioend(
bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_READ_AHEAD);
+ /*
+ * Pull in IO completion errors now. We are guaranteed to be running
+ * single threaded, so we don't need the lock to read b_io_error.
+ */
+ if (!bp->b_error && bp->b_io_error)
+ xfs_buf_ioerror(bp, bp->b_io_error);
+
/* Only validate buffers that were read without errors */
if (read && !bp->b_error && bp->b_ops) {
ASSERT(!bp->b_iodone);
@@ -1192,8 +1199,12 @@ xfs_buf_bio_end_io(
* don't overwrite existing errors - otherwise we can lose errors on
* buffers that require multiple bios to complete.
*/
- if (!bp->b_error)
- xfs_buf_ioerror(bp, error);
+ if (error) {
+ spin_lock(&bp->b_lock);
+ if (!bp->b_io_error)
+ bp->b_io_error = error;
+ spin_unlock(&bp->b_lock);
+ }
if (!bp->b_error && xfs_buf_is_vmapped(bp) && (bp->b_flags & XBF_READ))
invalidate_kernel_vmap_range(bp->b_addr, xfs_buf_vmap_len(bp));
@@ -1379,6 +1390,9 @@ xfs_buf_iorequest(
if (bp->b_flags & XBF_WRITE)
xfs_buf_wait_unpin(bp);
+ /* clear the internal error state to avoid spurious errors */
+ bp->b_io_error = 0;
+
/*
* Take references to the buffer. For XBF_ASYNC buffers, holding a
* reference for as long as submission takes is all that is necessary