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Differential D5080 Diff 14959 head/sys/kern/vfs_cluster.c

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head/sys/kern/vfs_cluster.c

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#include <sys/systm.h> #include <sys/systm.h>
#include <sys/kernel.h> #include <sys/kernel.h>
#include <sys/proc.h> #include <sys/proc.h>
#include <sys/bio.h> #include <sys/bio.h>
#include <sys/buf.h> #include <sys/buf.h>
#include <sys/vnode.h> #include <sys/vnode.h>
#include <sys/malloc.h> #include <sys/malloc.h>
#include <sys/mount.h> #include <sys/mount.h>
#include <sys/racct.h>
#include <sys/resourcevar.h> #include <sys/resourcevar.h>
#include <sys/rwlock.h> #include <sys/rwlock.h>
#include <sys/vmmeter.h> #include <sys/vmmeter.h>
#include <vm/vm.h> #include <vm/vm.h>
#include <vm/vm_object.h> #include <vm/vm_object.h>
#include <vm/vm_page.h> #include <vm/vm_page.h>
#include <sys/sysctl.h> #include <sys/sysctl.h>
▲ Show 20 Lines • Show All 180 Lines • ▼ Show 20 Lines if ((bp->b_flags & B_CLUSTER) == 0) {
vfs_busy_pages(bp, 0); vfs_busy_pages(bp, 0);
} }
bp->b_flags &= ~B_INVAL; bp->b_flags &= ~B_INVAL;
bp->b_ioflags &= ~BIO_ERROR; bp->b_ioflags &= ~BIO_ERROR;
if ((bp->b_flags & B_ASYNC) || bp->b_iodone != NULL) if ((bp->b_flags & B_ASYNC) || bp->b_iodone != NULL)
BUF_KERNPROC(bp); BUF_KERNPROC(bp);
bp->b_iooffset = dbtob(bp->b_blkno); bp->b_iooffset = dbtob(bp->b_blkno);
bstrategy(bp); bstrategy(bp);
#ifdef RACCT
if (racct_enable) {
PROC_LOCK(curproc);
racct_add_buf(curproc, bp, 0);
PROC_UNLOCK(curproc);
}
#endif /* RACCT */
curthread->td_ru.ru_inblock++; curthread->td_ru.ru_inblock++;
} }
/* /*
* If we have been doing sequential I/O, then do some read-ahead. * If we have been doing sequential I/O, then do some read-ahead.
*/ */
while (lblkno < (origblkno + maxra)) { while (lblkno < (origblkno + maxra)) {
error = VOP_BMAP(vp, lblkno, NULL, &blkno, &ncontig, NULL); error = VOP_BMAP(vp, lblkno, NULL, &blkno, &ncontig, NULL);
Show All 37 Lines if ((rbp->b_flags & B_CLUSTER) == 0) {
vfs_busy_pages(rbp, 0); vfs_busy_pages(rbp, 0);
} }
rbp->b_flags &= ~B_INVAL; rbp->b_flags &= ~B_INVAL;
rbp->b_ioflags &= ~BIO_ERROR; rbp->b_ioflags &= ~BIO_ERROR;
if ((rbp->b_flags & B_ASYNC) || rbp->b_iodone != NULL) if ((rbp->b_flags & B_ASYNC) || rbp->b_iodone != NULL)
BUF_KERNPROC(rbp); BUF_KERNPROC(rbp);
rbp->b_iooffset = dbtob(rbp->b_blkno); rbp->b_iooffset = dbtob(rbp->b_blkno);
bstrategy(rbp); bstrategy(rbp);
#ifdef RACCT
if (racct_enable) {
PROC_LOCK(curproc);
racct_add_buf(curproc, rbp, 0);
PROC_UNLOCK(curproc);
}
#endif /* RACCT */
curthread->td_ru.ru_inblock++; curthread->td_ru.ru_inblock++;
} }
if (reqbp) { if (reqbp) {
/* /*
* Like bread, always brelse() the buffer when * Like bread, always brelse() the buffer when
* returning an error. * returning an error.
*/ */
▲ Show 20 Lines • Show All 758 Lines • Show Last 20 Lines