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authorNick Piggin <npiggin@suse.de>2007-05-06 14:49:16 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:12:52 -0700
commita8127717cb24be7b8827a8d9e0ddbfde6b392146 (patch)
tree3b7d5556f127263b600bbcb44437c4c1739c000a /mm/filemap.c
parent14e072984179d3d421bf9ab75cc67e0961742841 (diff)
downloadop-kernel-dev-a8127717cb24be7b8827a8d9e0ddbfde6b392146.zip
op-kernel-dev-a8127717cb24be7b8827a8d9e0ddbfde6b392146.tar.gz
mm: simplify filemap_nopage
Identical block is duplicated twice: contrary to the comment, we have been re-reading the page *twice* in filemap_nopage rather than once. If any retry logic or anything is needed, it belongs in lower levels anyway. Only retry once. Linus agrees. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c24
1 files changed, 0 insertions, 24 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 070e754..cbea95a 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1446,30 +1446,6 @@ page_not_uptodate:
majmin = VM_FAULT_MAJOR;
count_vm_event(PGMAJFAULT);
}
- lock_page(page);
-
- /* Did it get unhashed while we waited for it? */
- if (!page->mapping) {
- unlock_page(page);
- page_cache_release(page);
- goto retry_all;
- }
-
- /* Did somebody else get it up-to-date? */
- if (PageUptodate(page)) {
- unlock_page(page);
- goto success;
- }
-
- error = mapping->a_ops->readpage(file, page);
- if (!error) {
- wait_on_page_locked(page);
- if (PageUptodate(page))
- goto success;
- } else if (error == AOP_TRUNCATED_PAGE) {
- page_cache_release(page);
- goto retry_find;
- }
/*
* Umm, take care of errors if the page isn't up-to-date.
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