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authorPavel Shilovsky <piastry@etersoft.ru>2011-03-16 01:55:32 +0300
committerSteve French <sfrench@us.ibm.com>2011-05-19 14:10:50 +0000
commit257fb1f15d72f89dad2d72fa467c189f2d7fdd71 (patch)
tree75069bb2801c4e9642d00b702c0c2e742826de33 /fs
parentfd5707e1b44560d18b47d552c1871ea0bfc46688 (diff)
downloadop-kernel-dev-257fb1f15d72f89dad2d72fa467c189f2d7fdd71.zip
op-kernel-dev-257fb1f15d72f89dad2d72fa467c189f2d7fdd71.tar.gz
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 <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/inode.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 196ef60..fbe7d58 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);
}
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