UBIFS: do not allocate unneeded scan buffer

In 'ubifs_replay_journal()' we allocate 'sbuf' for scanning the log.
However, we already have 'c->sbuf' for these purposes, so do not
allocate yet another one. This reduces UBIFS memory consumption while
recovering.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 1 insertions, 7 deletions

diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c
index 7df04ba4878e..eed0fcff8d73 100644
--- a/fs/ubifs/replay.c
+++ b/fs/ubifs/replay.c
@@ -1013,7 +1013,6 @@ out:
 int ubifs_replay_journal(struct ubifs_info *c)
 {
         int err, i, lnum, offs, free;
-        void *sbuf = NULL;
 
         BUILD_BUG_ON(UBIFS_TRUN_KEY > 5);
 
@@ -1028,10 +1027,6 @@ int ubifs_replay_journal(struct ubifs_info *c)
                 return -EINVAL;
         }
 
-        sbuf = vmalloc(c->leb_size);
-        if (!sbuf)
-                return -ENOMEM;
-
         dbg_mnt("start replaying the journal");
         c->replaying = 1;
         lnum = c->ltail_lnum = c->lhead_lnum;
@@ -1046,7 +1041,7 @@ int ubifs_replay_journal(struct ubifs_info *c)
                         lnum = UBIFS_LOG_LNUM;
                         offs = 0;
                 }
-                err = replay_log_leb(c, lnum, offs, sbuf);
+                err = replay_log_leb(c, lnum, offs, c->sbuf);
                 if (err == 1)
                         /* We hit the end of the log */
                         break;
@@ -1079,7 +1074,6 @@ int ubifs_replay_journal(struct ubifs_info *c)
 out:
         destroy_replay_tree(c);
         destroy_bud_list(c);
-        vfree(sbuf);
         c->replaying = 0;
         return err;
 }