diff options
| author | Andrey Markovytch <andreym@codeaurora.org> | 2016-02-03 08:02:19 +0200 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:24:12 -0700 |
| commit | b61ac21fb08dff5c5f29d5741dd83cffb95a1ffd (patch) | |
| tree | 881e539f423fdbbee3b5200ce490203288b5dd36 /include/linux/mm.h | |
| parent | 36f1ad69fd10838dc90d31e692a318c4992cd48b (diff) | |
mm + fs: extends support for cache dropping
Exposes drop_pagecache_sb (required by eCryptfs cache wiping)
Adds truncate_inode_pages_fill_zero (required by eCryptfs cache wiping),
which not only truncates pages but also fills them with 0, so that the
cached data can no longer be retrieved.
Change-Id: Icfc18a2c8cdc922e71ee17add6459a1355e77ba6
Signed-off-by: Andrey Markovytch <andreym@codeaurora.org>
[gbroner@codeaurora.org: fix merge conflict]
Signed-off-by: Gilad Broner <gbroner@codeaurora.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 27d3f27d9cce..a56812f21657 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -29,6 +29,7 @@ struct file_ra_state; struct user_struct; struct writeback_control; struct bdi_writeback; +struct super_block; #ifndef CONFIG_NEED_MULTIPLE_NODES /* Don't use mapnrs, do it properly */ extern unsigned long max_mapnr; @@ -1989,8 +1990,11 @@ vm_unmapped_area(struct vm_unmapped_area_info *info) /* truncate.c */ extern void truncate_inode_pages(struct address_space *, loff_t); +extern void truncate_inode_pages_fill_zero(struct address_space *, loff_t); extern void truncate_inode_pages_range(struct address_space *, loff_t lstart, loff_t lend); +extern void truncate_inode_pages_range_fill_zero(struct address_space *, + loff_t lstart, loff_t lend); extern void truncate_inode_pages_final(struct address_space *); /* generic vm_area_ops exported for stackable file systems */ @@ -2191,6 +2195,8 @@ int drop_caches_sysctl_handler(struct ctl_table *, int, void drop_slab(void); void drop_slab_node(int nid); +void drop_pagecache_sb(struct super_block *sb, void *unused); + #ifndef CONFIG_MMU #define randomize_va_space 0 #else |