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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.

[[email protected]: fix warning]
Signed-off-by: Nick Piggin <[email protected]>
Cc: Michael Halcrow <[email protected]>
Cc: Mark Fasheh <[email protected]>
Cc: Steven Whitehouse <[email protected]>
Signed-off-by: Michal Piotrowski <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nick Piggin 2007-10-16 01:25:26 -07:00 • committed by Linus Torvalds
commit 55144768e1
4 changed files with 16 additions and 48 deletions
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16
mm/filemap.c
View file

@ -1898,13 +1898,10 @@ again:
ret = aops->prepare_write(file, page, offset, offset+len);
if (ret) {
if (ret != AOP_TRUNCATED_PAGE)
unlock_page(page);
unlock_page(page);
page_cache_release(page);
if (pos + len > inode->i_size)
vmtruncate(inode, inode->i_size);
if (ret == AOP_TRUNCATED_PAGE)
goto again;
}
return ret;
}
@ -1931,7 +1928,6 @@ int pagecache_write_end(struct file *file, struct address_space *mapping,
unlock_page(page);
mark_page_accessed(page);
page_cache_release(page);
BUG_ON(ret == AOP_TRUNCATED_PAGE); /* can't deal with */
if (ret < 0) {
if (pos + len > inode->i_size)
@ -2142,7 +2138,7 @@ static ssize_t generic_perform_write_2copy(struct file *file,
flush_dcache_page(page);
status = a_ops->commit_write(file, page, offset, offset+bytes);
if (unlikely(status < 0 || status == AOP_TRUNCATED_PAGE))
if (unlikely(status < 0))
goto fs_write_aop_error;
if (unlikely(status > 0)) /* filesystem did partial write */
copied = min_t(size_t, copied, status);
@ -2162,8 +2158,7 @@ static ssize_t generic_perform_write_2copy(struct file *file,
continue;
fs_write_aop_error:
if (status != AOP_TRUNCATED_PAGE)
unlock_page(page);
unlock_page(page);
page_cache_release(page);
if (src_page)
page_cache_release(src_page);
@ -2175,10 +2170,7 @@ fs_write_aop_error:
*/
if (pos + bytes > inode->i_size)
vmtruncate(inode, inode->i_size);
if (status == AOP_TRUNCATED_PAGE)
continue;
else
break;
break;
} while (iov_iter_count(i));
return written ? written : status;