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| author | Milosz Tanski <milosz@adfin.com> | 2013-08-09 18:59:55 +0200 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-08-15 20:12:02 +0200 |
| commit | b150f5c1c759d551da9146435d3dc9df5f7e15ef (patch) | |
| tree | 1b8ec894d8997a741012600f39b3805a3b73a6dc /fs/ceph/addr.c | |
| parent | Merge remote-tracking branch 'linus/master' into testing (diff) | |
| download | linux-b150f5c1c759d551da9146435d3dc9df5f7e15ef.tar.xz linux-b150f5c1c759d551da9146435d3dc9df5f7e15ef.zip | |
ceph: cleanup the logic in ceph_invalidatepage
The invalidatepage code bails if it encounters a non-zero page offset. The
current logic that does is non-obvious with multiple if statements.
This should be logically and functionally equivalent.
Signed-off-by: Milosz Tanski <milosz@adfin.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph/addr.c')
| -rw-r--r-- | fs/ceph/addr.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 722585cd5c7e..cb78ce81d6a6 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -151,6 +151,13 @@ static void ceph_invalidatepage(struct page *page, unsigned int offset, struct ceph_snap_context *snapc = page_snap_context(page); inode = page->mapping->host; + ci = ceph_inode(inode); + + if (offset != 0 || length != PAGE_CACHE_SIZE) { + dout("%p invalidatepage %p idx %lu partial dirty page %u~%u\n", + inode, page, page->index, offset, length); + return; + } /* * We can get non-dirty pages here due to races between @@ -160,21 +167,15 @@ static void ceph_invalidatepage(struct page *page, unsigned int offset, if (!PageDirty(page)) pr_err("%p invalidatepage %p page not dirty\n", inode, page); - if (offset == 0 && length == PAGE_CACHE_SIZE) - ClearPageChecked(page); + ClearPageChecked(page); - ci = ceph_inode(inode); - if (offset == 0 && length == PAGE_CACHE_SIZE) { - dout("%p invalidatepage %p idx %lu full dirty page\n", - inode, page, page->index); - ceph_put_wrbuffer_cap_refs(ci, 1, snapc); - ceph_put_snap_context(snapc); - page->private = 0; - ClearPagePrivate(page); - } else { - dout("%p invalidatepage %p idx %lu partial dirty page %u(%u)\n", - inode, page, page->index, offset, length); - } + dout("%p invalidatepage %p idx %lu full dirty page\n", + inode, page, page->index); + + ceph_put_wrbuffer_cap_refs(ci, 1, snapc); + ceph_put_snap_context(snapc); + page->private = 0; + ClearPagePrivate(page); } /* just a sanity check */ |