From: Patrick Farrell <[email protected]> When exporting Lustre via NFS on SLES11SP2, this check incorrectly identifies anonymous dentries as root dentries. This is due to a change in SLES11SP2 which makes the d_name.name for anonymous dentries the same as that for root dentries. (Details in LU-3484.)
This changes the check to directly compare the value of the dentry pointer to the root dentry pointer found in the superblock, rather than using the name. Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3484 Lustre-change: http://review.whamcloud.com/6726 Signed-off-by: Patrick Farrell <[email protected]> Reviewed-by: Bob Glossman <[email protected]> Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by: Peng Tao <[email protected]> Reviewed-by: James Simmons <[email protected]> Reviewed-by: Alexey Shvetsov <[email protected]> Signed-off-by: Peng Tao <[email protected]> Signed-off-by: Andreas Dilger <[email protected]> --- drivers/staging/lustre/lustre/llite/dcache.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/dcache.c b/drivers/staging/lustre/lustre/llite/dcache.c index a160a84..0d49e1b 100644 --- a/drivers/staging/lustre/lustre/llite/dcache.c +++ b/drivers/staging/lustre/lustre/llite/dcache.c @@ -295,9 +295,10 @@ void ll_invalidate_aliases(struct inode *inode) dentry->d_name.name, dentry, dentry->d_parent, dentry->d_inode, dentry->d_flags); - if (dentry->d_name.len == 1 && dentry->d_name.name[0] == '/') { - CERROR("called on root (?) dentry=%p, inode=%p " - "ino=%lu\n", dentry, inode, inode->i_ino); + if (unlikely(dentry == dentry->d_sb->s_root)) { + CERROR("%s: called on root dentry=%p, fid="DFID"\n", + ll_get_fsname(dentry->d_sb, NULL, 0), + dentry, PFID(ll_inode2fid(inode))); lustre_dump_dentry(dentry, 1); dump_stack(); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
