CVS commit: src/sys/ufs/ffs

["Jaromir Dolecek" <jdolecek%netbsd.org@localhost>]

Module Name:    src
Committed By:   jdolecek
Date:           Sun Sep 25 17:14:59 UTC 2016

Modified Files:
        src/sys/ufs/ffs: ffs_alloc.c

Log Message:
adjust ffs_realloccg() so that the logic about allocating full
contiguous block for future fragment expansion doesn't need to
UFS_WAPBL_REGISTER_DEALLOCATION() or ffs_blkfree(); the free blocks
are now immediatelly available for use by the expanding file in further i/o

primary driver is safe removal of the deallocation registration and
hence failure point, but this also fixes degenerate case for wapbl,
and similar also for discard - if the file would be actually expanded
before wapbl commit, or before discard queue would be processed,
the filesystem would not yet see the contiguous free blocks, and
would be forced to allocate another fragment elsewhere


To generate a diff of this commit:
cvs rdiff -u -r1.151 -r1.152 src/sys/ufs/ffs/ffs_alloc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.