fs: Move bh_cachep to the __read_mostly section
fs: Move bh_cachep to the __read_mostly section

bh_cachep is only written to once on initialization, so move it to the
__read_mostly section.

Signed-off-by: Shai Fultheim <600c9aa9903c0092b93aeb0f848189e46fd6854a@scalemp.com>
Signed-off-by: Vlad Zolotarov <85d5c8dcb7db39358916efb7e6f840502f547b2c@scalemp.com>
Signed-off-by: Al Viro <de609eb4d5d70b1d38ec6642adbfc33a2781f63c@zeniv.linux.org.uk>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs