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-rw-r--r--fs/xfs/xfs_log.c39
1 files changed, 36 insertions, 3 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 0b02c6443551..3608a0f0a5f6 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 */
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