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treewide: convert PF_MEMALLOC manipulations to new helpers

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We now have memalloc_noreclaim_{save,restore} helpers for robust setting
and clearing of PF_MEMALLOC.  Let's convert the code which was using the
generic tsk_restore_flags().  No functional change.

[[email protected]: in net/core/sock.c the hunk is missing]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Vlastimil Babka <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: Josef Bacik <[email protected]>
Cc: Lee Duncan <[email protected]>
Cc: Chris Leech <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Boris Brezillon <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Wouter Verhelst <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Vlastimil Babka 2017-05-08 15:59:53 -07:00 • committed by Linus Torvalds
commit f108304872
4 changed files with 16 additions and 12 deletions
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7
drivers/scsi/iscsi_tcp.c
View file

@ -30,6 +30,7 @@
#include <linux/types.h>
#include <linux/inet.h>
#include <linux/slab.h>
#include <linux/sched/mm.h>
#include <linux/file.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
@ -371,10 +372,10 @@ static inline int iscsi_sw_tcp_xmit_qlen(struct iscsi_conn *conn)
static int iscsi_sw_tcp_pdu_xmit(struct iscsi_task *task)
{
struct iscsi_conn *conn = task->conn;
unsigned long pflags = current->flags;
unsigned int noreclaim_flag;
int rc = 0;
current->flags |= PF_MEMALLOC;
noreclaim_flag = memalloc_noreclaim_save();
while (iscsi_sw_tcp_xmit_qlen(conn)) {
rc = iscsi_sw_tcp_xmit(conn);
@ -387,7 +388,7 @@ static int iscsi_sw_tcp_pdu_xmit(struct iscsi_task *task)
rc = 0;
}
current_restore_flags(pflags, PF_MEMALLOC);
memalloc_noreclaim_restore(noreclaim_flag);
return rc;
}