From: Pavel Shilovsky Date: Tue, 15 Mar 2011 22:55:32 +0000 (+0300) Subject: CIFS: Use invalidate_inode_pages2 instead of invalidate_remote_inode (try #4) X-Git-Tag: firefly_0821_release~7613^2~1370^2~20 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=257fb1f15d72f89dad2d72fa467c189f2d7fdd71;p=firefly-linux-kernel-4.4.55.git CIFS: Use invalidate_inode_pages2 instead of invalidate_remote_inode (try #4) Use invalidate_inode_pages2 that don't leave pages even if shrink_page_list() has a temp ref on them. It prevents a data coherency problem when cifs_invalidate_mapping didn't invalidate pages but the client thinks that a data from the cache is uptodate according to an oplock level (exclusive or II). Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 196ef6078029..fbe7d5858563 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1691,12 +1691,18 @@ cifs_invalidate_mapping(struct inode *inode) cifs_i->invalid_mapping = false; - /* write back any cached data */ if (inode->i_mapping && inode->i_mapping->nrpages != 0) { + /* write back any cached data */ rc = filemap_write_and_wait(inode->i_mapping); mapping_set_error(inode->i_mapping, rc); + rc = invalidate_inode_pages2(inode->i_mapping); + if (rc) { + cERROR(1, "%s: could not invalidate inode %p", __func__, + inode); + cifs_i->invalid_mapping = true; + } } - invalidate_remote_inode(inode); + cifs_fscache_reset_inode_cookie(inode); }