The patch titled
eCryptfs: Grab lock on lower_page in ecryptfs_sync_page
has been added to the -mm tree. Its filename is
ecryptfs-grab-lock-on-lower_page-in-ecryptfs_sync_page.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: eCryptfs: Grab lock on lower_page in ecryptfs_sync_page
From: Michael Halcrow <mhalcrow@xxxxxxxxxx>
The recent swap of grab_cache_page() with find_get_page() in
ecryptfs_sync_page() missed the fact that we need a lock on the lower page.
This patch replaces find_get_page() with find_lock_page() in order to make
sure that this lock is obtained.
Signed-off-by: Michael Halcrow <mhalcrow@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/ecryptfs/mmap.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN fs/ecryptfs/mmap.c~ecryptfs-grab-lock-on-lower_page-in-ecryptfs_sync_page fs/ecryptfs/mmap.c
--- a/fs/ecryptfs/mmap.c~ecryptfs-grab-lock-on-lower_page-in-ecryptfs_sync_page
+++ a/fs/ecryptfs/mmap.c
@@ -766,9 +766,9 @@ static void ecryptfs_sync_page(struct pa
lower_inode = ecryptfs_inode_to_lower(inode);
/* NOTE: Recently swapped with grab_cache_page(), since
* sync_page() just makes sure that pending I/O gets done. */
- lower_page = find_get_page(lower_inode->i_mapping, page->index);
+ lower_page = find_lock_page(lower_inode->i_mapping, page->index);
if (!lower_page) {
- ecryptfs_printk(KERN_DEBUG, "find_get_page failed\n");
+ ecryptfs_printk(KERN_DEBUG, "find_lock_page failed\n");
return;
}
lower_page->mapping->a_ops->sync_page(lower_page);
_
Patches currently in -mm which might be from mhalcrow@xxxxxxxxxx are
lsm-remove-bsd-secure-level-security-module.patch
ecryptfs-fs-makefile-and-fs-kconfig.patch
ecryptfs-fs-makefile-and-fs-kconfig-kconfig-help-update.patch
ecryptfs-documentation.patch
ecryptfs-makefile.patch
ecryptfs-main-module-functions.patch
ecryptfs-header-declarations.patch
ecryptfs-superblock-operations.patch
ecryptfs-dentry-operations.patch
ecryptfs-file-operations.patch
ecryptfs-file-operations-readdir-fix-for-seeking-in-directory-streams.patch
ecryptfs-inode-operations.patch
ecryptfs-mmap-operations.patch
ecryptfs-mmap-operations-fix.patch
ecryptfs-keystore.patch
ecryptfs-crypto-functions.patch
ecryptfs-crypto-functions-mutex-fixes.patch
fs-ecryptfs-possible-cleanups.patch
ecryptfs-debug-functions.patch
ecryptfs-alpha-build-fix.patch
ecryptfs-convert-assert-to-bug_on.patch
ecryptfs-remove-pointless-bug_ons.patch
ecryptfs-remove-unnecessary-null-checks.patch
ecryptfs-rewrite-ecryptfs_fsync.patch
ecryptfs-overhaul-file-locking.patch
ecryptfs-remove-lock-propagation.patch
ecryptfs-dont-muck-with-the-existing-nameidata-structures.patch
ecryptfs-asm-scatterlisth-linux-scatterlisth.patch
ecryptfs-support-for-larger-maximum-key-size.patch
ecryptfs-add-codes-for-additional-ciphers.patch
ecryptfs-unencrypted-key-size-based-on-encrypted-key-size.patch
ecryptfs-packet-and-key-management-update-for-variable-key-size.patch
ecryptfs-add-ecryptfs_-prefix-to-mount-options-key-size-parameter.patch
ecryptfs-set-the-key-size-from-the-default-for-the-mount.patch
ecryptfs-check-for-weak-keys.patch
ecryptfs-add-define-values-for-cipher-codes-from-rfc2440-openpgp.patch
ecryptfs-convert-bits-to-bytes.patch
ecryptfs-more-elegant-aes-key-size-manipulation.patch
ecryptfs-more-intelligent-use-of-tfm-objects.patch
ecryptfs-remove-debugging-cruft.patch
ecryptfs-get_sb_dev-fix.patch
ecryptfs-validate-minimum-header-extent-size.patch
ecryptfs-validate-body-size.patch
ecryptfs-validate-packet-length-prior-to-parsing-add-comments.patch
ecryptfs-use-the-passed-in-max-value-as-the-upper-bound.patch
ecryptfs-change-the-maximum-size-check-when-writing-header.patch
ecryptfs-print-the-actual-option-that-is-problematic.patch
ecryptfs-add-a-maintainers-entry.patch
ecryptfs-partial-signed-integer-to-size_t-conversion-updated-ii.patch
ecryptfs-graceful-handling-of-mount-error.patch
ecryptfs-fix-printk-format-warnings.patch
ecryptfs-associate-vfsmount-with-dentry-rather-than-superblock.patch
ecryptfs-mntput-lower-mount-on-umount_begin.patch
vfs-make-filldir_t-and-struct-kstat-deal-in-64-bit-inode-numbers-ecryptfs.patch
make-kmem_cache_destroy-return-void-ecryptfs.patch
ecryptfs-inode-numbering-fixes.patch
ecryptfs-versioning-fixes.patch
ecryptfs-versioning-fixes-tidy.patch
ecryptfs-grab-lock-on-lower_page-in-ecryptfs_sync_page.patch
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