[XFS] Ensure xfs_bawrite() errors are checked.

xfs_bawrite() can return immediate error status on async writes. Unlike
xfsbdstrat() we don't ever check the error on the buffer after the call,
so we currently do not catch errors at all here. Ensure we catch and
propagate or warn to the syslog about up-front async write errors.

SGI-PV: 980084
SGI-Modid: xfs-linux-melb:xfs-kern:30824a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

5 files changed, 28 insertions, 6 deletions

diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index 15214fbb9aa..631ebb31b29 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -1291,7 +1291,7 @@ xfs_qm_dqflush(
 	if (flags & XFS_QMOPT_DELWRI) {
 		xfs_bdwrite(mp, bp);
 	} else if (flags & XFS_QMOPT_ASYNC) {
-		xfs_bawrite(mp, bp);
+		error = xfs_bawrite(mp, bp);
 	} else {
 		error = xfs_bwrite(mp, bp);
 	}
@@ -1582,12 +1582,18 @@ xfs_qm_dqflock_pushbuf_wait(
 		    XFS_INCORE_TRYLOCK);
 	if (bp != NULL) {
 		if (XFS_BUF_ISDELAYWRITE(bp)) {
+			int	error;
 			if (XFS_BUF_ISPINNED(bp)) {
 				xfs_log_force(dqp->q_mount,
 					      (xfs_lsn_t)0,
 					      XFS_LOG_FORCE);
 			}
-			xfs_bawrite(dqp->q_mount, bp);
+			error = xfs_bawrite(dqp->q_mount, bp);
+			if (error)
+				xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
+					"xfs_qm_dqflock_pushbuf_wait: "
+					"pushbuf error %d on dqp %p, bp %p",
+					error, dqp, bp);
 		} else {
 			xfs_buf_relse(bp);
 		}
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
index 3dedce1d9cd..36e05ca7841 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -267,11 +267,16 @@ xfs_qm_dquot_logitem_pushbuf(
 					      XFS_LOG_FORCE);
 			}
 			if (dopush) {
+				int	error;
 #ifdef XFSRACEDEBUG
 				delay_for_intr();
 				delay(300);
 #endif
-				xfs_bawrite(mp, bp);
+				error = xfs_bawrite(mp, bp);
+				if (error)
+					xfs_fs_cmn_err(CE_WARN, mp,
+	"xfs_qm_dquot_logitem_pushbuf: pushbuf error %d on qip %p, bp %p",
+							error, qip, bp);
 			} else {
 				xfs_buf_relse(bp);
 			}
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 63debd147eb..53a71c62025 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -645,7 +645,12 @@ xfs_buf_item_push(
 	bp = bip->bli_buf;
 
 	if (XFS_BUF_ISDELAYWRITE(bp)) {
-		xfs_bawrite(bip->bli_item.li_mountp, bp);
+		int	error;
+		error = xfs_bawrite(bip->bli_item.li_mountp, bp);
+		if (error)
+			xfs_fs_cmn_err(CE_WARN, bip->bli_item.li_mountp,
+			"xfs_buf_item_push: pushbuf error %d on bip %p, bp %p",
+					error, bip, bp);
 	} else {
 		xfs_buf_relse(bp);
 	}
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 63e66890f06..ca074ee01d0 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -3276,7 +3276,7 @@ xfs_iflush(
 	if (flags & INT_DELWRI) {
 		xfs_bdwrite(mp, bp);
 	} else if (flags & INT_ASYNC) {
-		xfs_bawrite(mp, bp);
+		error = xfs_bawrite(mp, bp);
 	} else {
 		error = xfs_bwrite(mp, bp);
 	}
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 2c775b4ae9e..93b5db453ea 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -40,6 +40,7 @@
 #include "xfs_btree.h"
 #include "xfs_ialloc.h"
 #include "xfs_rw.h"
+#include "xfs_error.h"
 
 
 kmem_zone_t	*xfs_ili_zone;		/* inode log item zone */
@@ -813,7 +814,12 @@ xfs_inode_item_pushbuf(
 					      XFS_LOG_FORCE);
 			}
 			if (dopush) {
-				xfs_bawrite(mp, bp);
+				int	error;
+				error = xfs_bawrite(mp, bp);
+				if (error)
+					xfs_fs_cmn_err(CE_WARN, mp,
+		"xfs_inode_item_pushbuf: pushbuf error %d on iip %p, bp %p",
+							error, iip, bp);
 			} else {
 				xfs_buf_relse(bp);
 			}