diff options
| author | Yang Sheng <yang.sheng@intel.com> | 2017-10-07 22:37:48 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 10:06:30 +0100 |
| commit | 2d1d45396585549eaa6d01d9889a31c46237a96e (patch) | |
| tree | 25e6d99859c83071ecdc11dadf5c9b7844e4e4d3 /drivers | |
| parent | 28a8fc6416ab191ce5ee34e709067dde9ec0e563 (diff) | |
staging: lustre: llite: don't invoke direct_IO for the EOF case
[ Upstream commit 77759771fb95420d23876cb104ab65c022613325 ]
The function generic_file_read_iter() does not check EOF
before invoke direct_IO callback. So we have to check it
ourselves.
Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8969
Reviewed-on: https://review.whamcloud.com/24552
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/rw26.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index 3da4c01e2159..adeefb31cbad 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -376,6 +376,10 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter, if (!lli->lli_has_smd) return -EBADF; + /* Check EOF by ourselves */ + if (iov_iter_rw(iter) == READ && file_offset >= i_size_read(inode)) + return 0; + /* FIXME: io smaller than PAGE_SIZE is broken on ia64 ??? */ if ((file_offset & ~CFS_PAGE_MASK) || (count & ~CFS_PAGE_MASK)) return -EINVAL; |