K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2017-12-31T03:15:45.575631Z
K 7
svn:log
V 309
MFC r324127:

    tmpfs: skip zero-sized page count updates

    Such updates consisted of vast majority of modificiations, especially
    in tmpfs_reg_resize.

    For the case where page count did no change and the size grew we only
    need to update tn_size. Use this fact to avoid vm object lock/relock.

END