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authorThieu Le <thieule@chromium.org>2011-03-08 16:26:03 -0800
committerTyler Hicks <tyhicks@linux.vnet.ibm.com>2011-03-28 01:47:45 -0500
commit57db4e8d73ef2b5e94a3f412108dff2576670a8a (patch)
treeab6eae8e879cfa41cdb3309d8e6a52de14746ca4 /fs/ecryptfs/file.c
parentfed8859b3ab94274c986cbdf7d27130e0545f02c (diff)
downloadlinux-57db4e8d73ef2b5e94a3f412108dff2576670a8a.tar.bz2
ecryptfs: modify write path to encrypt page in writepage
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>
Diffstat (limited to 'fs/ecryptfs/file.c')
-rw-r--r--fs/ecryptfs/file.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 7d1050e254f9..cedc913d11ba 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -273,7 +273,14 @@ static int ecryptfs_release(struct inode *inode, struct file *file)
static int
ecryptfs_fsync(struct file *file, int datasync)
{
- return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
+ int rc = 0;
+
+ rc = generic_file_fsync(file, datasync);
+ if (rc)
+ goto out;
+ rc = vfs_fsync(ecryptfs_file_to_lower(file), datasync);
+out:
+ return rc;
}
static int ecryptfs_fasync(int fd, struct file *file, int flag)