staging: lustre: discard libcfs_kvzalloc and linux-mem.c
authorNeilBrown <neilb@suse.com>
Tue, 20 Feb 2018 02:23:37 +0000 (13:23 +1100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 22 Feb 2018 14:06:36 +0000 (15:06 +0100)
commitc90e17185722edb75ada5775f560279ab1d32b70
treefc42eafee068a8cac070d14bac6a01b45d3aee45
parent033085ff96a1615b08e80fd4327f2608ff7408cb
staging: lustre: discard libcfs_kvzalloc and linux-mem.c

The only interesting difference between libcfs_kvzalloc()
and kvzalloc() is that the former appears to work
with GFP_NOFS, which the latter gives a WARN_ON_ONCE()
when that is attempted.

Each libcfs_kvzalloc() should really be analysed
and either converted to a kzalloc() call if the size is never
more than a page, or to use GFP_KERNEL if no locks are held.

If there is ever a case where locks are held and a large allocation
is needed, then some other technique should be used.

It might be nice to not always blindly zero pages too...

For now, just convert libcfs_kvzalloc() calls to
kvzalloc(), and let the warning remind us that there is work to do.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
20 files changed:
drivers/staging/lustre/include/linux/libcfs/libcfs.h
drivers/staging/lustre/lnet/libcfs/Makefile
drivers/staging/lustre/lnet/libcfs/linux/linux-mem.c [deleted file]
drivers/staging/lustre/lustre/llite/file.c
drivers/staging/lustre/lustre/lmv/lmv_obd.c
drivers/staging/lustre/lustre/lov/lov_ea.c
drivers/staging/lustre/lustre/lov/lov_io.c
drivers/staging/lustre/lustre/lov/lov_lock.c
drivers/staging/lustre/lustre/lov/lov_object.c
drivers/staging/lustre/lustre/lov/lov_pack.c
drivers/staging/lustre/lustre/mdc/mdc_locks.c
drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
drivers/staging/lustre/lustre/obdclass/llog.c
drivers/staging/lustre/lustre/obdclass/lustre_handles.c
drivers/staging/lustre/lustre/ptlrpc/client.c
drivers/staging/lustre/lustre/ptlrpc/sec.c
drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
drivers/staging/lustre/lustre/ptlrpc/sec_null.c
drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
drivers/staging/lustre/lustre/ptlrpc/service.c