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fs: remove some AOP_TRUNCATED_PAGE

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prepare/commit_write no longer returns AOP_TRUNCATED_PAGE since OCFS2 and
GFS2 were converted to the new aops, so we can make some simplifications
for that.

[michal.k.k.piotrowski@gmail.com: fix warning]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nick Piggin
2007-10-16 01:25:26 -07:00
committed by Linus Torvalds
parent 03158cd7eb
commit 55144768e1
4 changed files with 16 additions and 48 deletions
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40
fs/ecryptfs/mmap.c
View File

@ -446,11 +446,9 @@ out:
return rc;
}
static
void ecryptfs_release_lower_page(struct page *lower_page, int page_locked)
static void ecryptfs_release_lower_page(struct page *lower_page)
{
if (page_locked)
unlock_page(lower_page);
unlock_page(lower_page);
page_cache_release(lower_page);
}
@ -471,7 +469,6 @@ static int ecryptfs_write_inode_size_to_header(struct file *lower_file,
const struct address_space_operations *lower_a_ops;
u64 file_size;
retry:
header_page = grab_cache_page(lower_inode->i_mapping, 0);
if (!header_page) {
ecryptfs_printk(KERN_ERR, "grab_cache_page for "
@ -482,11 +479,7 @@ retry:
lower_a_ops = lower_inode->i_mapping->a_ops;
rc = lower_a_ops->prepare_write(lower_file, header_page, 0, 8);
if (rc) {
if (rc == AOP_TRUNCATED_PAGE) {
ecryptfs_release_lower_page(header_page, 0);
goto retry;
} else
ecryptfs_release_lower_page(header_page, 1);
ecryptfs_release_lower_page(header_page);
goto out;
}
file_size = (u64)i_size_read(inode);
@ -500,11 +493,7 @@ retry:
if (rc < 0)
ecryptfs_printk(KERN_ERR, "Error commiting header page "
"write\n");
if (rc == AOP_TRUNCATED_PAGE) {
ecryptfs_release_lower_page(header_page, 0);
goto retry;
} else
ecryptfs_release_lower_page(header_page, 1);
ecryptfs_release_lower_page(header_page);
lower_inode->i_mtime = lower_inode->i_ctime = CURRENT_TIME;
mark_inode_dirty_sync(inode);
out:
@ -593,7 +582,6 @@ int ecryptfs_get_lower_page(struct page **lower_page, struct inode *lower_inode,
{
int rc = 0;
retry:
*lower_page = grab_cache_page(lower_inode->i_mapping, lower_page_index);
if (!(*lower_page)) {
rc = -EINVAL;
@ -607,16 +595,11 @@ retry:
byte_offset,
region_bytes);
if (rc) {
if (rc == AOP_TRUNCATED_PAGE) {
ecryptfs_release_lower_page(*lower_page, 0);
goto retry;
} else {
ecryptfs_printk(KERN_ERR, "prepare_write for "
"lower_page_index = [0x%.16x] failed; rc = "
"[%d]\n", lower_page_index, rc);
ecryptfs_release_lower_page(*lower_page, 1);
(*lower_page) = NULL;
}
ecryptfs_printk(KERN_ERR, "prepare_write for "
"lower_page_index = [0x%.16x] failed; rc = "
"[%d]\n", lower_page_index, rc);
ecryptfs_release_lower_page(*lower_page);
(*lower_page) = NULL;
}
out:
return rc;
@ -632,19 +615,16 @@ ecryptfs_commit_lower_page(struct page *lower_page, struct inode *lower_inode,
struct file *lower_file, int byte_offset,
int region_size)
{
int page_locked = 1;
int rc = 0;
rc = lower_inode->i_mapping->a_ops->commit_write(
lower_file, lower_page, byte_offset, region_size);
if (rc == AOP_TRUNCATED_PAGE)
page_locked = 0;
if (rc < 0) {
ecryptfs_printk(KERN_ERR,
"Error committing write; rc = [%d]\n", rc);
} else
rc = 0;
ecryptfs_release_lower_page(lower_page, page_locked);
ecryptfs_release_lower_page(lower_page);
return rc;
}