Messages in this thread Patch in this message | | | From | Gioh Kim <> | Subject | [PATCHv4 3/3] jbd/jbd2: use non-movable memory for the jbd superblock | Date | Thu, 4 Sep 2014 16:29:41 +0900 |
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A long-lasting buffer-cache can distrub page migration so that it must be allocated from non-movable area.
The journal_init_inode is creating a buffer-cache for superblock journaling. The superblock exists until system shutdown so that the buffer-cache for the superblock would also exist for a long time and it can distrub page migration.
This patch make the buffer-cache be allocated from non-movable area not to distrub page migration.
Signed-off-by: Gioh Kim <gioh.kim@lge.com> Reviewed-by: Jan Kara <jack@suse.cz> --- fs/jbd/journal.c | 2 +- fs/jbd2/journal.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index 06fe11e..aab8549 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -886,7 +886,7 @@ journal_t * journal_init_inode (struct inode *inode) goto out_err; } - bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); + bh = getblk_unmovable(journal->j_dev, blocknr, journal->j_blocksize); if (!bh) { printk(KERN_ERR "%s: Cannot get buffer for journal superblock\n", diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 67b8e30..65bd3b1 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1237,7 +1237,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode) goto out_err; } - bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); + bh = getblk_unmovable(journal->j_dev, blocknr, journal->j_blocksize); if (!bh) { printk(KERN_ERR "%s: Cannot get buffer for journal superblock\n", -- 1.7.9.5
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