Il 05/02/2014 13:39, Christoph Hellwig ha scritto:
Avoid hitting the host-wide free_list lock unless we need to put a command
back onto the freelist.
Signed-off-by: Christoph Hellwig h...@lst.de
---
drivers/scsi/scsi.c | 13 +++--
1 file changed, 7 insertions(+), 6 deletions(-)
diff
On Wed, Feb 05, 2014 at 03:44:04PM -0800, James Bottomley wrote:
Why do this? cmd is still likely to be not NULL, which helps the
compiler optimise.
Because testing for non-NULL pointers gets that hint implicitly from
gcc.
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Avoid hitting the host-wide free_list lock unless we need to put a command
back onto the freelist.
Signed-off-by: Christoph Hellwig h...@lst.de
---
drivers/scsi/scsi.c | 13 +++--
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
On Wed, 2014-02-05 at 04:39 -0800, Christoph Hellwig wrote:
Avoid hitting the host-wide free_list lock unless we need to put a command
back onto the freelist.
This one looks like it can go independently on its own.
Signed-off-by: Christoph Hellwig h...@lst.de
---
drivers/scsi/scsi.c | 13
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