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eCryptfs: track header bytes rather than extents

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Remove internal references to header extents; just keep track of header bytes
instead.  Headers can easily span multiple pages with the recent persistent
file changes.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Halcrow
2008-02-06 01:38:32 -08:00
committed by Linus Torvalds
parent 7896b63182
commit cc11beffdf
5 changed files with 51 additions and 84 deletions
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3
fs/ecryptfs/ecryptfs_kernel.h
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@@ -237,7 +237,7 @@ struct ecryptfs_crypt_stat {
u32 flags;
unsigned int file_version;
size_t iv_bytes;
size_t num_header_extents_at_front;
size_t num_header_bytes_at_front;
size_t extent_size; /* Data extent size; default is 4096 */
size_t key_size;
size_t extent_shift;
@@ -518,7 +518,6 @@ extern struct kmem_cache *ecryptfs_file_info_cache;
extern struct kmem_cache *ecryptfs_dentry_info_cache;
extern struct kmem_cache *ecryptfs_inode_info_cache;
extern struct kmem_cache *ecryptfs_sb_info_cache;
extern struct kmem_cache *ecryptfs_header_cache_0;
extern struct kmem_cache *ecryptfs_header_cache_1;
extern struct kmem_cache *ecryptfs_header_cache_2;
extern struct kmem_cache *ecryptfs_xattr_cache;