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[CIFS] Fix mtime on cp -p when file data cached but written out too late 

Kukks noticed that cp -p can write out file data too late, after the timestamp
is already set.  This was introduced as an unintentional sideeffect of the change
in an earlier patch (see below) which fixed some delayed return code propagation.

cea218054a
Author: Jeff Layton <jlayton@redhat.com>
Date:   Tue Nov 20 23:19:03 2007 +0000

Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2008-03-14 19:21:31 +00:00
parent bc5b6e24a1
commit 50531444fa
1 changed files with 5 additions and 4 deletions
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9
fs/cifs/inode.c
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@ -1420,11 +1420,10 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
}
cifsInode = CIFS_I(direntry->d_inode);
/* BB check if we need to refresh inode from server now ? BB */
if (attrs->ia_valid & ATTR_SIZE) {
if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
/*
Flush data before changing file size on server. If the
Flush data before changing file size or changing the last
write time of the file on the server. If the
flush returns error, store it to report later and continue.
BB: This should be smarter. Why bother flushing pages that
will be truncated anyway? Also, should we error out here if
@ -1435,7 +1434,9 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
CIFS_I(direntry->d_inode)->write_behind_rc = rc;
rc = 0;
}
}
if (attrs->ia_valid & ATTR_SIZE) {
/* To avoid spurious oplock breaks from server, in the case of
inodes that we already have open, avoid doing path based
setting of file size if we can do it by handle.