From: Li Dongyang Date: Thu, 26 Mar 2015 01:53:24 +0000 (-0400) Subject: staging/lustre/llite: glimpse the inode before doing fiemap X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a915ffda199013a8ee2dd6a8a23b89ea45879ed3;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git staging/lustre/llite: glimpse the inode before doing fiemap For a new inode, the i_size is 0 until a stat, which will yield an empty fiemap result. Fix the issue by glimpsing the size before doing fiemap. Signed-off-by: Li Dongyang Signed-off-by: Bob Glossman Reviewed-by: Andreas Dilger Reviewed-by: Jinshan Xiong Reviewed-on: http://review.whamcloud.com/13439 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6091 Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c index 6dab3baa8063..85e74d18d1c7 100644 --- a/drivers/staging/lustre/lustre/llite/file.c +++ b/drivers/staging/lustre/lustre/llite/file.c @@ -1712,6 +1712,12 @@ static int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap, fm_key.oa.o_oi = lsm->lsm_oi; fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP; + if (i_size_read(inode) == 0) { + rc = ll_glimpse_size(inode); + if (rc) + goto out; + } + obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE); obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid); /* If filesize is 0, then there would be no objects for mapping */