[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 15214fb..631ebb3 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 3dedce1..36e05ca 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 63debd1..53a71c6 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 63e6689..ca074ee 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 2c775b4..93b5db4 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);
 			}