Conrad Meyer aaa3852435 buf: Add B_INVALONERR flag to discard data ... Setting the B_INVALONERR flag before a synchronous write causes the buf cache to forcibly invalidate contents if the write fails (BIO_ERROR). This is intended to be used to allow layers above the buffer cache to make more informed decisions about when discarding dirty buffers without successful write is acceptable. As a proof of concept, use in msdosfs to handle failures to mark the on-disk 'dirty' bit during rw mount or ro->rw update. Extending this to other filesystems is left as future work. PR: 210316 Reviewed by: kib (with objections) Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D21539		2019-09-11 21:24:14 +00:00
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direntry.h	makefs: diff reduction to sys/fs/msdosfs	2019-08-22 17:49:34 +00:00
Makefile.inc	makefs: share fat.h between kernel msdosfs and makefs	2019-08-21 02:21:40 +00:00
msdosfs_conv.c	makefs: share msdosfsmount.h between kernel msdosfs and makefs	2019-09-01 16:55:33 +00:00
msdosfs_denode.c	buf: Add B_INVALONERR flag to discard data	2019-09-11 21:24:14 +00:00
msdosfs_fat.c	buf: Add B_INVALONERR flag to discard data	2019-09-11 21:24:14 +00:00
msdosfs_lookup.c	buf: Add B_INVALONERR flag to discard data	2019-09-11 21:24:14 +00:00
msdosfs_vfsops.c	buf: Add B_INVALONERR flag to discard data	2019-09-11 21:24:14 +00:00
msdosfs_vnops.c	buf: Add B_INVALONERR flag to discard data	2019-09-11 21:24:14 +00:00