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| author | Yunlong Song <yunlong.song@huawei.com> | 2018-02-28 20:31:52 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2018-03-13 11:54:57 +0000 |
| commit | 1a6afad3777b6741f5bf2feec39cb7512aedae9b (patch) | |
| tree | 655691c686c9bca294c90c022bd85a640ce1ded5 /include/linux | |
| parent | 2b1843d7d06151a55dc7bb5c787ce2f94ad724c1 (diff) | |
FROMLIST: f2fs: don't put dentry page in pagecache into highmem
Cherry-pick from origin/upstream-f2fs-stable-linux-4.4.y:
39ed8376d611 ("f2fs: don't put dentry page in pagecache into highmem")
Previous dentry page uses highmem, which will cause panic in platforms
using highmem (such as arm), since the address space of dentry pages
from highmem directly goes into the decryption path via the function
fscrypt_fname_disk_to_usr. But sg_init_one assumes the address is not
from highmem, and then cause panic since it doesn't call kmap_high but
kunmap_high is triggered at the end. To fix this problem in a simple
way, this patch avoids to put dentry page in pagecache into highmem.
Change-Id: I0c87dafb92fce72bf70403a15d28c73992c03203
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: fix coding style]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/f2fs_fs.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index c82ae65b5330..073365c9808a 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -46,7 +46,6 @@ /* This flag is used by node and meta inodes, and by recovery */ #define GFP_F2FS_ZERO (GFP_NOFS | __GFP_ZERO) -#define GFP_F2FS_HIGH_ZERO (GFP_NOFS | __GFP_ZERO | __GFP_HIGHMEM) /* * For further optimization on multi-head logs, on-disk layout supports maximum |