Attilio Rao 5e60cb948e Remove a racy checks on resident and cached pages for ... tmpfs_mapped{read, write}() functions: - tmpfs_mapped{read, write}() are only called within VOP_{READ, WRITE}(), which check before-hand to work only on valid VREG vnodes. Also the vnode is locked for the duration of the work, making vnode reclaiming impossible, during the operation. Hence, vobj can never be NULL. - Currently check on resident pages and cached pages without vm object lock held is racy and can do even more harm than good, as a page could be transitioning between these 2 pools and then be skipped entirely. Skip the checks as lookups on empty splay trees are very cheap. Discussed with: alc Tested by: flo MFC after: 2 weeks		2013-02-10 01:04:10 +00:00
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tmpfs_fifoops.c
tmpfs_fifoops.h
tmpfs_subr.c	tmpfs: Replace directory entry linked list with RB-Tree.	2013-01-06 22:15:44 +00:00
tmpfs_vfsops.c	tmpfs: Replace directory entry linked list with RB-Tree.	2013-01-06 22:15:44 +00:00
tmpfs_vnops.c	Remove a racy checks on resident and cached pages for	2013-02-10 01:04:10 +00:00
tmpfs_vnops.h
tmpfs.h	tmpfs: Replace directory entry linked list with RB-Tree.	2013-01-06 22:15:44 +00:00