xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ecryptfs: clean up page flag handling

Browse Source 
The functions that eventually call down to ecryptfs_read_lower(),
ecryptfs_decrypt_page(), and ecryptfs_copy_up_encrypted_with_header()
should have the responsibility of managing the page Uptodate
status. This patch gets rid of some of the ugliness that resulted from
trying to push some of the page flag setting too far down the stack.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Halcrow
2007-10-16 01:28:14 -07:00
committed by Linus Torvalds
parent ecbdc93639
commit 16a72c455a
4 changed files with 39 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
fs/ecryptfs/crypto.c
View File

@@ -605,14 +605,14 @@ int ecryptfs_decrypt_page(struct page *page)
printk(KERN_ERR "%s: Error attempting to copy "
"page at index [%ld]\n", __FUNCTION__,
page->index);
goto out_clear_uptodate;
goto out;
}
enc_extent_virt = kmalloc(PAGE_CACHE_SIZE, GFP_USER);
if (!enc_extent_virt) {
rc = -ENOMEM;
ecryptfs_printk(KERN_ERR, "Error allocating memory for "
"encrypted extent\n");
goto out_clear_uptodate;
goto out;
}
enc_extent_page = virt_to_page(enc_extent_virt);
for (extent_offset = 0;
@@ -631,21 +631,17 @@ int ecryptfs_decrypt_page(struct page *page)
ecryptfs_printk(KERN_ERR, "Error attempting "
"to read lower page; rc = [%d]"
"\n", rc);
goto out_clear_uptodate;
goto out;
}
rc = ecryptfs_decrypt_extent(page, crypt_stat, enc_extent_page,
extent_offset);
if (rc) {
printk(KERN_ERR "%s: Error encrypting extent; "
"rc = [%d]\n", __FUNCTION__, rc);
goto out_clear_uptodate;
goto out;
}
extent_offset++;
}
SetPageUptodate(page);
goto out;
out_clear_uptodate:
ClearPageUptodate(page);
out:
kfree(enc_extent_virt);
return rc;