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| author | Chao Yu <yuchao0@huawei.com> | 2018-04-09 20:25:06 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-31 11:31:45 -0700 |
| commit | 81114baa835b59ed02d14aa1d67f91ea874077cd (patch) | |
| tree | eded000624ab09f8f101120b54798527b60acb54 /fs/f2fs/inode.c | |
| parent | 241b493d8fbda0ddbdcbd1e9be36c37b8a351281 (diff) | |
| download | linux-stable-81114baa835b59ed02d14aa1d67f91ea874077cd.tar.gz linux-stable-81114baa835b59ed02d14aa1d67f91ea874077cd.tar.bz2 linux-stable-81114baa835b59ed02d14aa1d67f91ea874077cd.zip | |
f2fs: don't use GFP_ZERO for page caches
Related to https://lkml.org/lkml/2018/4/8/661
Sometimes, we need to write meta data to new allocated block address,
then we will allocate a zeroed page in inner inode's address space, and
fill partial data in it, and leave other place with zero value which means
some fields are initial status.
There are two inner inodes (meta inode and node inode) setting __GFP_ZERO,
I have just checked them, for both of them, we can avoid using __GFP_ZERO,
and do initialization by ourselves to avoid unneeded/redundant zeroing
from mm.
Cc: <stable@vger.kernel.org>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/inode.c')
| -rw-r--r-- | fs/f2fs/inode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 417c9dcd0269..87535bf63421 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -320,10 +320,10 @@ struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) make_now: if (ino == F2FS_NODE_INO(sbi)) { inode->i_mapping->a_ops = &f2fs_node_aops; - mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); + mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); } else if (ino == F2FS_META_INO(sbi)) { inode->i_mapping->a_ops = &f2fs_meta_aops; - mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); + mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); } else if (S_ISREG(inode->i_mode)) { inode->i_op = &f2fs_file_inode_operations; inode->i_fop = &f2fs_file_operations; |