From 0e98728fa32d338907631349a8cc2afa07c0cb9a Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 7 Jun 2011 20:40:35 -0700 Subject: [PATCH] ceph: fix ENOENT logic in striped_read Getting ENOENT is equivalent to reading 0 bytes. Make that correction before setting up the hit_stripe and was_short flags. Fixes the following case: dd if=/dev/zero of=/mnt/fs_depot/dd3 bs=1 seek=1048576 count=0 dd if=/mnt/fs_depot/dd3 of=/root/ddout1 skip=8 bs=500 count=2 iflag=direct Reported-by: Henry C Chang Signed-off-by: Sage Weil --- fs/ceph/file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index b654f403139e..9542f07d0b93 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -318,10 +318,10 @@ more: ci->i_truncate_seq, ci->i_truncate_size, page_pos, pages_left, page_align); - hit_stripe = this_len < left; - was_short = ret >= 0 && ret < this_len; if (ret == -ENOENT) ret = 0; + hit_stripe = this_len < left; + was_short = ret >= 0 && ret < this_len; dout("striped_read %llu~%u (read %u) got %d%s%s\n", pos, left, read, ret, hit_stripe ? " HITSTRIPE" : "", was_short ? " SHORT" : ""); -- 2.11.0