1 files changed, 36 insertions, 3 deletions

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 51840170b16c..92c20a8d9e69 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -563,6 +563,11 @@ xfs_log_mount(
         }
 
         mp->m_log = xlog_alloc_log(mp, log_target, blk_offset, num_bblks);
+        if (!mp->m_log) {
+                cmn_err(CE_WARN, "XFS: Log allocation failed: No memory!");
+                error = ENOMEM;
+                goto out;
+        }
 
         /*
          * Initialize the AIL now we have a log.
@@ -601,6 +606,7 @@ xfs_log_mount(
         return 0;
 error:
         xfs_log_unmount_dealloc(mp);
+out:
         return error;
 }       /* xfs_log_mount */
 
@@ -1217,7 +1223,9 @@ xlog_alloc_log(xfs_mount_t	*mp,
         int                     i;
         int                     iclogsize;
 
-        log = (xlog_t *)kmem_zalloc(sizeof(xlog_t), KM_SLEEP);
+        log = kmem_zalloc(sizeof(xlog_t), KM_MAYFAIL);
+        if (!log)
+                return NULL;
 
         log->l_mp          = mp;
         log->l_targ        = log_target;
@@ -1249,6 +1257,8 @@ xlog_alloc_log(xfs_mount_t	*mp,
         xlog_get_iclog_buffer_size(mp, log);
 
         bp = xfs_buf_get_empty(log->l_iclog_size, mp->m_logdev_targp);
+        if (!bp)
+                goto out_free_log;
         XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone);
         XFS_BUF_SET_BDSTRAT_FUNC(bp, xlog_bdstrat_cb);
         XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1);
@@ -1275,13 +1285,17 @@ xlog_alloc_log(xfs_mount_t	*mp,
         iclogsize = log->l_iclog_size;
         ASSERT(log->l_iclog_size >= 4096);
         for (i=0; i < log->l_iclog_bufs; i++) {
-                *iclogp = (xlog_in_core_t *)
-                          kmem_zalloc(sizeof(xlog_in_core_t), KM_SLEEP);
+                *iclogp = kmem_zalloc(sizeof(xlog_in_core_t), KM_MAYFAIL);
+                if (!*iclogp)
+                        goto out_free_iclog;
+
                 iclog = *iclogp;
                 iclog->ic_prev = prev_iclog;
                 prev_iclog = iclog;
 
                 bp = xfs_buf_get_noaddr(log->l_iclog_size, mp->m_logdev_targp);
+                if (!bp)
+                        goto out_free_iclog;
                 if (!XFS_BUF_CPSEMA(bp))
                         ASSERT(0);
                 XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone);
@@ -1323,6 +1337,25 @@ xlog_alloc_log(xfs_mount_t	*mp,
         log->l_iclog->ic_prev = prev_iclog;     /* re-write 1st prev ptr */
 
         return log;
+
+out_free_iclog:
+        for (iclog = log->l_iclog; iclog; iclog = prev_iclog) {
+                prev_iclog = iclog->ic_next;
+                if (iclog->ic_bp) {
+                        sv_destroy(&iclog->ic_force_wait);
+                        sv_destroy(&iclog->ic_write_wait);
+                        xfs_buf_free(iclog->ic_bp);
+                        xlog_trace_iclog_dealloc(iclog);
+                }
+                kmem_free(iclog);
+        }
+        spinlock_destroy(&log->l_icloglock);
+        spinlock_destroy(&log->l_grant_lock);
+        xlog_trace_loggrant_dealloc(log);
+        xfs_buf_free(log->l_xbuf);
+out_free_log:
+        kmem_free(log);
+        return NULL;
 }       /* xlog_alloc_log */