| vfs_bio.c (137168) | vfs_bio.c (137186) |
|---|---|
| 1/*- 2 * Copyright (c) 2004 Poul-Henning Kamp 3 * Copyright (c) 1994,1997 John S. Dyson 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 25 unchanged lines hidden (view full) --- 34 * Author: John S. Dyson 35 * Significant help during the development and debugging phases 36 * had been provided by David Greenman, also of the FreeBSD core team. 37 * 38 * see man buf(9) for more info. 39 */ 40 41#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2004 Poul-Henning Kamp 3 * Copyright (c) 1994,1997 John S. Dyson 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 25 unchanged lines hidden (view full) --- 34 * Author: John S. Dyson 35 * Significant help during the development and debugging phases 36 * had been provided by David Greenman, also of the FreeBSD core team. 37 * 38 * see man buf(9) for more info. 39 */ 40 41#include <sys/cdefs.h> |
| 42__FBSDID("$FreeBSD: head/sys/kern/vfs_bio.c 137168 2004-11-03 20:17:31Z alc $"); | 42__FBSDID("$FreeBSD: head/sys/kern/vfs_bio.c 137186 2004-11-04 07:59:57Z phk $"); |
| 43 44#include <sys/param.h> 45#include <sys/systm.h> 46#include <sys/bio.h> 47#include <sys/conf.h> 48#include <sys/buf.h> 49#include <sys/devicestat.h> 50#include <sys/eventhandler.h> --- 484 unchanged lines hidden (view full) --- 535 for (i = 0; i < BUFFER_QUEUES; i++) 536 TAILQ_INIT(&bufqueues[i]); 537 538 /* finally, initialize each buffer header and stick on empty q */ 539 for (i = 0; i < nbuf; i++) { 540 bp = &buf[i]; 541 bzero(bp, sizeof *bp); 542 bp->b_flags = B_INVAL; /* we're just an empty header */ | 43 44#include <sys/param.h> 45#include <sys/systm.h> 46#include <sys/bio.h> 47#include <sys/conf.h> 48#include <sys/buf.h> 49#include <sys/devicestat.h> 50#include <sys/eventhandler.h> --- 484 unchanged lines hidden (view full) --- 535 for (i = 0; i < BUFFER_QUEUES; i++) 536 TAILQ_INIT(&bufqueues[i]); 537 538 /* finally, initialize each buffer header and stick on empty q */ 539 for (i = 0; i < nbuf; i++) { 540 bp = &buf[i]; 541 bzero(bp, sizeof *bp); 542 bp->b_flags = B_INVAL; /* we're just an empty header */ |
| 543 bp->b_dev = NULL; | |
| 544 bp->b_rcred = NOCRED; 545 bp->b_wcred = NOCRED; 546 bp->b_qindex = QUEUE_EMPTY; 547 bp->b_vflags = 0; 548 bp->b_xflags = 0; 549 LIST_INIT(&bp->b_dep); 550 BUF_LOCKINIT(bp); 551 TAILQ_INSERT_TAIL(&bufqueues[QUEUE_EMPTY], bp, b_freelist); --- 865 unchanged lines hidden (view full) --- 1417 if (bp->b_vflags & BV_BKGRDINPROG) 1418 panic("losing buffer 1"); 1419 if (bp->b_kvasize) { 1420 bp->b_qindex = QUEUE_EMPTYKVA; 1421 } else { 1422 bp->b_qindex = QUEUE_EMPTY; 1423 } 1424 TAILQ_INSERT_HEAD(&bufqueues[bp->b_qindex], bp, b_freelist); | 543 bp->b_rcred = NOCRED; 544 bp->b_wcred = NOCRED; 545 bp->b_qindex = QUEUE_EMPTY; 546 bp->b_vflags = 0; 547 bp->b_xflags = 0; 548 LIST_INIT(&bp->b_dep); 549 BUF_LOCKINIT(bp); 550 TAILQ_INSERT_TAIL(&bufqueues[QUEUE_EMPTY], bp, b_freelist); --- 865 unchanged lines hidden (view full) --- 1416 if (bp->b_vflags & BV_BKGRDINPROG) 1417 panic("losing buffer 1"); 1418 if (bp->b_kvasize) { 1419 bp->b_qindex = QUEUE_EMPTYKVA; 1420 } else { 1421 bp->b_qindex = QUEUE_EMPTY; 1422 } 1423 TAILQ_INSERT_HEAD(&bufqueues[bp->b_qindex], bp, b_freelist); |
| 1425 bp->b_dev = NULL; | |
| 1426 /* buffers with junk contents */ 1427 } else if (bp->b_flags & (B_INVAL | B_NOCACHE | B_RELBUF) || 1428 (bp->b_ioflags & BIO_ERROR)) { 1429 bp->b_flags |= B_INVAL; 1430 bp->b_xflags &= ~(BX_BKGRDWRITE | BX_ALTDATA); 1431 if (bp->b_vflags & BV_BKGRDINPROG) 1432 panic("losing buffer 2"); 1433 bp->b_qindex = QUEUE_CLEAN; 1434 TAILQ_INSERT_HEAD(&bufqueues[QUEUE_CLEAN], bp, b_freelist); | 1424 /* buffers with junk contents */ 1425 } else if (bp->b_flags & (B_INVAL | B_NOCACHE | B_RELBUF) || 1426 (bp->b_ioflags & BIO_ERROR)) { 1427 bp->b_flags |= B_INVAL; 1428 bp->b_xflags &= ~(BX_BKGRDWRITE | BX_ALTDATA); 1429 if (bp->b_vflags & BV_BKGRDINPROG) 1430 panic("losing buffer 2"); 1431 bp->b_qindex = QUEUE_CLEAN; 1432 TAILQ_INSERT_HEAD(&bufqueues[QUEUE_CLEAN], bp, b_freelist); |
| 1435 bp->b_dev = NULL; | |
| 1436 /* remaining buffers */ 1437 } else { 1438 if (bp->b_flags & B_DELWRI) 1439 bp->b_qindex = QUEUE_DIRTY; 1440 else 1441 bp->b_qindex = QUEUE_CLEAN; 1442 if (bp->b_flags & B_AGE) 1443 TAILQ_INSERT_HEAD(&bufqueues[bp->b_qindex], bp, b_freelist); --- 476 unchanged lines hidden (view full) --- 1920 1921 if (bp->b_bufsize) 1922 allocbuf(bp, 0); 1923 1924 bp->b_flags = 0; 1925 bp->b_ioflags = 0; 1926 bp->b_xflags = 0; 1927 bp->b_vflags = 0; | 1433 /* remaining buffers */ 1434 } else { 1435 if (bp->b_flags & B_DELWRI) 1436 bp->b_qindex = QUEUE_DIRTY; 1437 else 1438 bp->b_qindex = QUEUE_CLEAN; 1439 if (bp->b_flags & B_AGE) 1440 TAILQ_INSERT_HEAD(&bufqueues[bp->b_qindex], bp, b_freelist); --- 476 unchanged lines hidden (view full) --- 1917 1918 if (bp->b_bufsize) 1919 allocbuf(bp, 0); 1920 1921 bp->b_flags = 0; 1922 bp->b_ioflags = 0; 1923 bp->b_xflags = 0; 1924 bp->b_vflags = 0; |
| 1928 bp->b_dev = NULL; | |
| 1929 bp->b_vp = NULL; 1930 bp->b_blkno = bp->b_lblkno = 0; 1931 bp->b_offset = NOOFFSET; 1932 bp->b_iodone = 0; 1933 bp->b_error = 0; 1934 bp->b_resid = 0; 1935 bp->b_bcount = 0; 1936 bp->b_npages = 0; --- 1931 unchanged lines hidden (view full) --- 3868 if (!have_addr) { 3869 db_printf("usage: show buffer <addr>\n"); 3870 return; 3871 } 3872 3873 db_printf("b_flags = 0x%b\n", (u_int)bp->b_flags, PRINT_BUF_FLAGS); 3874 db_printf( 3875 "b_error = %d, b_bufsize = %ld, b_bcount = %ld, b_resid = %ld\n" | 1925 bp->b_vp = NULL; 1926 bp->b_blkno = bp->b_lblkno = 0; 1927 bp->b_offset = NOOFFSET; 1928 bp->b_iodone = 0; 1929 bp->b_error = 0; 1930 bp->b_resid = 0; 1931 bp->b_bcount = 0; 1932 bp->b_npages = 0; --- 1931 unchanged lines hidden (view full) --- 3864 if (!have_addr) { 3865 db_printf("usage: show buffer <addr>\n"); 3866 return; 3867 } 3868 3869 db_printf("b_flags = 0x%b\n", (u_int)bp->b_flags, PRINT_BUF_FLAGS); 3870 db_printf( 3871 "b_error = %d, b_bufsize = %ld, b_bcount = %ld, b_resid = %ld\n" |
| 3876 "b_dev = (%d,%d), b_data = %p, b_blkno = %jd\n", | 3872 "b_bufobj = (%p), b_data = %p, b_blkno = %jd\n", |
| 3877 bp->b_error, bp->b_bufsize, bp->b_bcount, bp->b_resid, | 3873 bp->b_error, bp->b_bufsize, bp->b_bcount, bp->b_resid, |
| 3878 major(bp->b_dev), minor(bp->b_dev), bp->b_data, 3879 (intmax_t)bp->b_blkno); | 3874 bp->b_bufobj, bp->b_data, (intmax_t)bp->b_blkno); |
| 3880 if (bp->b_npages) { 3881 int i; 3882 db_printf("b_npages = %d, pages(OBJ, IDX, PA): ", bp->b_npages); 3883 for (i = 0; i < bp->b_npages; i++) { 3884 vm_page_t m; 3885 m = bp->b_pages[i]; 3886 db_printf("(%p, 0x%lx, 0x%lx)", (void *)m->object, 3887 (u_long)m->pindex, (u_long)VM_PAGE_TO_PHYS(m)); 3888 if ((i + 1) < bp->b_npages) 3889 db_printf(","); 3890 } 3891 db_printf("\n"); 3892 } 3893} 3894#endif /* DDB */ | 3875 if (bp->b_npages) { 3876 int i; 3877 db_printf("b_npages = %d, pages(OBJ, IDX, PA): ", bp->b_npages); 3878 for (i = 0; i < bp->b_npages; i++) { 3879 vm_page_t m; 3880 m = bp->b_pages[i]; 3881 db_printf("(%p, 0x%lx, 0x%lx)", (void *)m->object, 3882 (u_long)m->pindex, (u_long)VM_PAGE_TO_PHYS(m)); 3883 if ((i + 1) < bp->b_npages) 3884 db_printf(","); 3885 } 3886 db_printf("\n"); 3887 } 3888} 3889#endif /* DDB */ |