Konstantin Belousov 555b7bb4c8 Mark pages after EOF as clean after pageout. ... Suppose that a file on NFS has partially filled last page, and this page is dirty. NFS VOP_PAGEOUT() method only marks the the page clean up to the block of the last written byte, leaving other blocks dirty. Also any page which erronously exists in the vnode vm_object past EOF is also left marked as dirty. With the introduction of the buf-cache coherent pager, each pass of syncer over the object with such page results in creation of B_DELWRI buffer due to VOP_WRITE() call. This buffer is noted on next syncer pass, which results e.g. a visible manifestation of shutdown never finishing vnode sync. Note that before buf-cache coherency commit, a dirty page might left never synced to server if a partial writes occur. Fix this by clearing dirty bits after EOF. Only blocks of the partial page which are completely after EOF are marked clean, to avoid possible user data loss. Reported by: mav Reviewed by: alc, markj Tested by: mav, pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D11697		2017-07-26 20:07:05 +00:00
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autofs	Renumber copyright clause 4	2017-02-28 23:42:47 +00:00
cd9660	Consistently use vop_stdpathconf() for default pathconf values.	2017-07-11 21:55:20 +00:00
cuse	Minor code optimisation.	2017-05-31 21:05:24 +00:00
deadfs	Renumber copyright clause 4	2017-02-28 23:42:47 +00:00
devfs	Commit the 64-bit inode project.	2017-05-23 09:29:05 +00:00
ext2fs	Consistently use vop_stdpathconf() for default pathconf values.	2017-07-11 21:55:20 +00:00
fdescfs	Replace unnecessary _KERNEL by double-include protection.	2017-07-25 06:59:35 +00:00
fifofs	Consistently use vop_stdpathconf() for default pathconf values.	2017-07-11 21:55:20 +00:00
fuse	Complete support for IO_APPEND flag in fuse	2017-06-28 13:56:15 +00:00
msdosfs	Consistently use vop_stdpathconf() for default pathconf values.	2017-07-11 21:55:20 +00:00
nandfs	Consistently use vop_stdpathconf() for default pathconf values.	2017-07-11 21:55:20 +00:00
nfs	Rename vfs.nfsd.enable_uidtostring to vfs.nfs.enable_uidtostring.	2017-07-19 09:59:32 +00:00
nfsclient	Mark pages after EOF as clean after pageout.	2017-07-26 20:07:05 +00:00
nfsserver	Rename vfs.nfsd.enable_uidtostring to vfs.nfs.enable_uidtostring.	2017-07-19 09:59:32 +00:00
nullfs	Renumber copyright clause 4	2017-02-28 23:42:47 +00:00
procfs	remove procfs ctl interface	2017-03-05 03:05:24 +00:00
pseudofs	Fix LINT, broken by a -Wformat warning in r320329 with PFS_DELEN being	2017-06-27 17:01:46 +00:00
smbfs	Mark pages after EOF as clean after pageout.	2017-07-26 20:07:05 +00:00
tmpfs	Consistently use vop_stdpathconf() for default pathconf values.	2017-07-11 21:55:20 +00:00
udf	On error, bread(9) zeroes buffer pointer, do not dereference it.	2016-11-22 13:24:57 +00:00
unionfs	Renumber copyright clause 4	2017-02-28 23:42:47 +00:00