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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 |
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| .. | ||
| cd9660 | ||
| ffs | ||
| msdos | ||
| tests | ||
| cd9660.c | ||
| cd9660.h | ||
| ffs.c | ||
| ffs.h | ||
| Makefile | ||
| Makefile.depend | ||
| makefs.8 | ||
| makefs.c | ||
| makefs.h | ||
| msdos.c | ||
| msdos.h | ||
| mtree.c | ||
| walk.c | ||