Konstantin Belousov 76cae067b8 By doing file extension fast, it is possible to create excess supply ... of the D_NEWBLK kinds of dependencies (i.e. D_ALLOCDIRECT and D_ALLOCINDIR), which can exhaust kmem. Handle excess of D_NEWBLK in the same way as excess of D_INODEDEP and D_DIRREM, by scheduling ast to flush dependencies, after the thread, which created new dep, left the VFS/FFS innards. For D_NEWBLK, the only way to get rid of them is to do full sync, since items are attached to data blocks of arbitrary vnodes. The check for D_NEWBLK excess in softdep_ast_cleanup_proc() is unlocked. For 32bit arches, reduce the total amount of allowed dependencies by two. It could be considered increasing the limit for 64 bit platforms with direct maps. Reported and tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 2 weeks		2015-09-01 13:07:27 +00:00
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ffs	By doing file extension fast, it is possible to create excess supply	2015-09-01 13:07:27 +00:00
ufs	Remove several write-only variables, all reported by the gcc 4.9	2015-05-29 13:24:17 +00:00