use-non-moveable-memory-for-the-jbd-superblock

   1 jbd/jbd2: use non-movable memory for the jbd superblock
   2
   3 From: Gioh Kim <gioh.kim@lge.com>
   4
   5 Sicne the jbd/jbd2 superblock is not released until the file system is
   6 unmounted, allocate the buffer cache from the non-moveable area to
   7 allow page migration and CMA allocations to more easily succeed.
   8
   9 Signed-off-by: Gioh Kim <gioh.kim@lge.com>
  10 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
  11 Reviewed-by: Jan Kara <jack@suse.cz>
  12 ---
  13  fs/jbd/journal.c  |    2 +-
  14  fs/jbd2/journal.c |    2 +-
  15  2 files changed, 2 insertions(+), 2 deletions(-)
  16
  17 diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
  18 index 06fe11e..aab8549 100644
  19 --- a/fs/jbd/journal.c
  20 +++ b/fs/jbd/journal.c
  21 @@ -886,7 +886,7 @@ journal_t * journal_init_inode (struct inode *inode)
  22                 goto out_err;
  23         }
  24
  25 -       bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
  26 +       bh = getblk_unmovable(journal->j_dev, blocknr, journal->j_blocksize);
  27         if (!bh) {
  28                 printk(KERN_ERR
  29                        "%s: Cannot get buffer for journal superblock\n",
  30 diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
  31 index 67b8e30..65bd3b1 100644
  32 --- a/fs/jbd2/journal.c
  33 +++ b/fs/jbd2/journal.c
  34 @@ -1237,7 +1237,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode)
  35                 goto out_err;
  36         }
  37
  38 -       bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
  39 +       bh = getblk_unmovable(journal->j_dev, blocknr, journal->j_blocksize);
  40         if (!bh) {
  41                 printk(KERN_ERR
  42                        "%s: Cannot get buffer for journal superblock\n",
  43 --
  44 1.7.9.5
  45
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