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Michael Halcrow d3e49afbb6 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>

2008-06-06 11:29:09 -07:00

crypto.c

ecryptfs: fix missed mutex_unlock

2008-05-24 09:56:07 -07:00

debug.c

eCryptfs: update comment and debug statement

2007-10-16 09:43:11 -07:00

dentry.c

eCryptfs: Swap dput() and mntput()

2008-03-19 18:53:36 -07:00

ecryptfs_kernel.h

eCryptfs: remove unnecessary page decrypt call