tree dddd6ce81475ebd3ab56fff6e55efe60d0802393
parent 4c0608f4a0e76dfb82d3accd20081f4bf47ed143
author Matthew Wilcox <willy@infradead.org> 1541011168 -0400
committer Matthew Wilcox <willy@infradead.org> 1541453888 -0500

XArray: Unify xa_cmpxchg and __xa_cmpxchg

xa_cmpxchg() was one of the largest functions in the xarray
implementation.  By turning it into a wrapper and having the callers
take the lock (like several other functions), we save 160 bytes on a
tinyconfig build and reduce the duplication in xarray.c.

Signed-off-by: Matthew Wilcox <willy@infradead.org>