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ecryptfs: modify write path to encrypt page in writepage

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Change the write path to encrypt the data only when the page is written to
disk in ecryptfs_writepage. Previously, ecryptfs encrypts the page in
ecryptfs_write_end which means that if there are multiple write requests to
the same page, ecryptfs ends up re-encrypting that page over and over again.
This patch minimizes the number of encryptions needed.

Signed-off-by: Thieu Le <thieule@chromium.org>
[tyhicks: Changed NULL .drop_inode sop pointer to generic_drop_inode]
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
This commit is contained in:
Thieu Le
2011-03-08 16:26:03 -08:00
committed by Tyler Hicks
parent fed8859b3a
commit 57db4e8d73
6 changed files with 38 additions and 30 deletions
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fs/ecryptfs/ecryptfs_kernel.h
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@ -296,7 +296,6 @@ struct ecryptfs_inode_info {
struct inode vfs_inode;
struct inode *wii_inode;
struct file *lower_file;
struct mutex lower_file_mutex;
struct ecryptfs_crypt_stat crypt_stat;
};