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authorGioh Kim <gioh.kim@lge.com>2014-09-04 22:36:15 -0400
committerTheodore Ts'o <tytso@mit.edu>2014-09-04 22:36:15 -0400
commita8ac900b8163703340a2fdad11c32f96b8fe686d (patch)
treec8b656297fea56be775cf22f3ed32479fb2b39ad /fs
parent3b5e6454aaf6b4439b19400d8365e2ec2d24e411 (diff)
downloadop-kernel-dev-a8ac900b8163703340a2fdad11c32f96b8fe686d.zip
op-kernel-dev-a8ac900b8163703340a2fdad11c32f96b8fe686d.tar.gz
ext4: use non-movable memory for the ext4 superblock
Since the ext4 superblock is not released until the file system is unmounted, allocate the buffer cache entry for the ext4 superblock out of the non-moveable are to allow page migrations and thus CMA allocations to more easily succeed if the CMA area is limited. Signed-off-by: Gioh Kim <gioh.kim@lge.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/super.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 487c65b..4b81747 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3436,7 +3436,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
logical_sb_block = sb_block;
}
- if (!(bh = sb_bread(sb, logical_sb_block))) {
+ if (!(bh = sb_bread_unmovable(sb, logical_sb_block))) {
ext4_msg(sb, KERN_ERR, "unable to read superblock");
goto out_fail;
}
@@ -3646,7 +3646,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
brelse(bh);
logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE;
offset = do_div(logical_sb_block, blocksize);
- bh = sb_bread(sb, logical_sb_block);
+ bh = sb_bread_unmovable(sb, logical_sb_block);
if (!bh) {
ext4_msg(sb, KERN_ERR,
"Can't read superblock on 2nd try");
@@ -3868,7 +3868,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
for (i = 0; i < db_count; i++) {
block = descriptor_loc(sb, logical_sb_block, i);
- sbi->s_group_desc[i] = sb_bread(sb, block);
+ sbi->s_group_desc[i] = sb_bread_unmovable(sb, block);
if (!sbi->s_group_desc[i]) {
ext4_msg(sb, KERN_ERR,
"can't read group descriptor %d", i);
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