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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a8acad7073
Buffers are always returned locked from the lookup routines. Hence we don't need to tell the lookup routines to return locked buffers, on to try and lock them. Remove XBF_LOCK from all the callers and from internal buffer cache usage. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
157 lines
4.1 KiB
C
157 lines
4.1 KiB
C
/*
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* Copyright (c) 2000-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_types.h"
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#include "xfs_bit.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_error.h"
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#include "xfs_rw.h"
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/*
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* Force a shutdown of the filesystem instantly while keeping
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* the filesystem consistent. We don't do an unmount here; just shutdown
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* the shop, make sure that absolutely nothing persistent happens to
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* this filesystem after this point.
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*/
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void
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xfs_do_force_shutdown(
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xfs_mount_t *mp,
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int flags,
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char *fname,
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int lnnum)
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{
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int logerror;
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logerror = flags & SHUTDOWN_LOG_IO_ERROR;
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if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
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xfs_notice(mp,
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"%s(0x%x) called from line %d of file %s. Return address = 0x%p",
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__func__, flags, lnnum, fname, __return_address);
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}
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/*
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* No need to duplicate efforts.
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*/
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if (XFS_FORCED_SHUTDOWN(mp) && !logerror)
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return;
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/*
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* This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't
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* queue up anybody new on the log reservations, and wakes up
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* everybody who's sleeping on log reservations to tell them
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* the bad news.
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*/
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if (xfs_log_force_umount(mp, logerror))
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return;
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if (flags & SHUTDOWN_CORRUPT_INCORE) {
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xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT,
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"Corruption of in-memory data detected. Shutting down filesystem");
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if (XFS_ERRLEVEL_HIGH <= xfs_error_level)
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xfs_stack_trace();
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} else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
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if (logerror) {
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xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR,
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"Log I/O Error Detected. Shutting down filesystem");
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} else if (flags & SHUTDOWN_DEVICE_REQ) {
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xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
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"All device paths lost. Shutting down filesystem");
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} else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
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xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
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"I/O Error Detected. Shutting down filesystem");
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}
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}
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if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
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xfs_alert(mp,
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"Please umount the filesystem and rectify the problem(s)");
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}
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}
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/*
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* This isn't an absolute requirement, but it is
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* just a good idea to call xfs_read_buf instead of
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* directly doing a read_buf call. For one, we shouldn't
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* be doing this disk read if we are in SHUTDOWN state anyway,
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* so this stops that from happening. Secondly, this does all
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* the error checking stuff and the brelse if appropriate for
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* the caller, so the code can be a little leaner.
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*/
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int
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xfs_read_buf(
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struct xfs_mount *mp,
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xfs_buftarg_t *target,
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xfs_daddr_t blkno,
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int len,
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uint flags,
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xfs_buf_t **bpp)
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{
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xfs_buf_t *bp;
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int error;
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if (!flags)
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flags = XBF_MAPPED;
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bp = xfs_buf_read(target, blkno, len, flags);
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if (!bp)
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return XFS_ERROR(EIO);
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error = bp->b_error;
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if (!error && !XFS_FORCED_SHUTDOWN(mp)) {
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*bpp = bp;
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} else {
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*bpp = NULL;
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if (error) {
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xfs_buf_ioerror_alert(bp, __func__);
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} else {
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error = XFS_ERROR(EIO);
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}
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if (bp) {
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XFS_BUF_UNDONE(bp);
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xfs_buf_stale(bp);
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/*
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* brelse clears B_ERROR and b_error
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*/
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xfs_buf_relse(bp);
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}
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}
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return (error);
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}
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/*
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* helper function to extract extent size hint from inode
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*/
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xfs_extlen_t
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xfs_get_extsz_hint(
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struct xfs_inode *ip)
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{
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if ((ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE) && ip->i_d.di_extsize)
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return ip->i_d.di_extsize;
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if (XFS_IS_REALTIME_INODE(ip))
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return ip->i_mount->m_sb.sb_rextsize;
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return 0;
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}
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