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staging: lustre: clio: remove mtime check in vvp_io_fault_start()

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In fault IO initialization, inode's mtime is saved, and after
getting locks, when the IO is about to start, vvp_io_fault_start()
checks the mtime's intactness.

It's a false alarm, since the timestamp from MDS could be stale,
we maintain mtime mainly on OST objects, and if the check in
vvp_io_fault_start() happens before mtime on OST objects are merged,
it will get wrong timestamp from the inode, even the timestamp it
fetched in vvp_io_fault_init() could be wrong in the first place.

This patch remove the mtime check in vvp_io_fault_start().

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7198
Reviewed-on: http://review.whamcloud.com/19162
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bobi Jam 2016-12-02 19:53:24 -05:00 committed by Greg Kroah-Hartman
parent db2472b0b6
commit 9fd14479a6
1 changed files with 0 additions and 6 deletions
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6
drivers/staging/lustre/lustre/llite/vvp_io.c
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@ -1064,12 +1064,6 @@ static int vvp_io_fault_start(const struct lu_env *env,
loff_t size;
pgoff_t last_index;
if (fio->ft_executable &&
inode->i_mtime.tv_sec != vio->u.fault.ft_mtime)
CWARN("binary "DFID
" changed while waiting for the page fault lock\n",
PFID(lu_object_fid(&obj->co_lu)));
down_read(&lli->lli_trunc_sem);
/* offset of the last byte on the page */