xfs: fallback to vmalloc for large buffers in xfs_attrlist_by_handle
authorEric Sandeen <sandeen@redhat.com>
Thu, 4 Apr 2013 05:05:13 +0000 (00:05 -0500)
committerBen Myers <bpm@sgi.com>
Tue, 7 May 2013 23:56:38 +0000 (18:56 -0500)
commitdd700d9452023a5b6820815a88f93c8f7010c270
tree49132456e58a9cd79a74e43954a8dac054db09a3
parent742ae1e35b038ed65ddd86182723441ea74db765
xfs: fallback to vmalloc for large buffers in xfs_attrlist_by_handle

Shamelessly copied from dchinner's:
ad650f5b xfs: fallback to vmalloc for large buffers in xfs_attrmulti_attr_get

xfsdump uses for a large buffer for extended attributes, which has a
kmalloc'd shadow buffer in the kernel. This can fail after the
system has been running for some time as it is a high order
allocation. Add a fallback to vmalloc so that it doesn't require
contiguous memory and so won't randomly fail while xfsdump is
running.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
fs/xfs/xfs_ioctl.c