tree 9b993f704d23a9678380171e6870306d34541afb
parent dd700d9452023a5b6820815a88f93c8f7010c270
author Eric Sandeen <sandeen@sandeen.net> 1366906386 -0500
committer Ben Myers <bpm@sgi.com> 1367971210 -0500

xfs: fallback to vmalloc for large buffers in xfs_compat_attrlist_by_handle

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

This was done for xfs_attrlist_by_handle but
xfs_compat_attrlist_by_handle (the 32-bit version) needs the same
attention.

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