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orangefs: wait_for_direct_io(): restore the position in iter when restarting

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Al Viro 2016-02-07 01:25:06 -05:00 committed by Mike Marshall
parent e17be9fd4d
commit 7b9761af86
1 changed files with 3 additions and 0 deletions
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3
fs/orangefs/file.c
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@ -133,6 +133,7 @@ static ssize_t wait_for_direct_io(enum ORANGEFS_io_type type, struct inode *inod
struct orangefs_khandle *handle = &orangefs_inode->refn.khandle;
struct orangefs_bufmap *bufmap = NULL;
struct orangefs_kernel_op_s *new_op = NULL;
struct iov_iter saved = *iter;
int buffer_index = -1;
ssize_t ret;
@ -211,6 +212,8 @@ populate_shared_memory:
if (ret == -EAGAIN && op_state_purged(new_op)) {
orangefs_bufmap_put(bufmap, buffer_index);
buffer_index = -1;
if (type == ORANGEFS_IO_WRITE)
*iter = saved;
gossip_debug(GOSSIP_FILE_DEBUG,
"%s:going to repopulate_shared_memory.\n",
__func__);