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| author | Michael Halcrow <mhalcrow@us.ibm.com> | 2008-06-06 09:46:02 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-06-06 22:29:09 +0400 |
| commit | d3e49afbb66109613c3474f2273f5830ac2dcb09 (patch) | |
| tree | d4c3330878741db68f1cac649e070b464ea59204 /fs/ecryptfs/ecryptfs_kernel.h | |
| parent | c45dcabd2626c56f8c1235df9db065f584f3ac82 (diff) | |
| download | linux-d3e49afbb66109613c3474f2273f5830ac2dcb09.tar.xz | |
eCryptfs: remove unnecessary page decrypt call
The page decrypt calls in ecryptfs_write() are both pointless and buggy.
Pointless because ecryptfs_get_locked_page() has already brought the page
up to date, and buggy because prior mmap writes will just be blown away by
the decrypt call.
This patch also removes the declaration of a now-nonexistent function
ecryptfs_write_zeros().
Thanks to Eric Sandeen and David Kleikamp for helping to track this
down.
Eric said:
fsx w/ mmap dies quickly ( < 100 ops) without this, and survives
nicely (to millions of ops+) with it in place.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: Eric Sandeen <sandeen@redhat.com>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ecryptfs/ecryptfs_kernel.h')
| -rw-r--r-- | fs/ecryptfs/ecryptfs_kernel.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index 951ee33a022d..c15c25745e05 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -660,8 +660,6 @@ int ecryptfs_get_tfm_and_mutex_for_cipher_name(struct crypto_blkcipher **tfm, int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key, struct ecryptfs_auth_tok **auth_tok, char *sig); -int ecryptfs_write_zeros(struct file *file, pgoff_t index, int start, - int num_zeros); int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data, loff_t offset, size_t size); int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode, |