Date: Sun, 14 Feb 1999 18:03:42 -0800 (PST) From: Matt Dillon <dillon@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: cvs commit: src/sys/vm vm_object.c Message-ID: <199902150203.SAA15772@freefall.freebsd.org>
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dillon 1999/02/14 18:03:42 PST
Modified files:
sys/vm vm_object.c
Log:
Fix a bug in the new madvise() code that would possibly (improperly)
free swap space out from under a busy page. This is not legal because
the swap may be reallocated and I/O issued while I/O is still in
progress on the same swap page from the madvise()'d object. This bug
could only occur under extreme paging conditions but might not cause
an error until much later. As a side-benefit, madvise() is now even
smaller.
Revision Changes Path
1.151 +12 -24 src/sys/vm/vm_object.c
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