fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git] / fs / xfs / xfs_log.c
index 9176995..c48bf61 100644 (file)
@@ -24,7 +24,6 @@
 #include "xfs_trans.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
-#include "xfs_dir.h"
 #include "xfs_dir2.h"
 #include "xfs_dmapi.h"
 #include "xfs_mount.h"
@@ -36,7 +35,6 @@
 #include "xfs_ialloc_btree.h"
 #include "xfs_log_recover.h"
 #include "xfs_trans_priv.h"
-#include "xfs_dir_sf.h"
 #include "xfs_dir2_sf.h"
 #include "xfs_attr_sf.h"
 #include "xfs_dinode.h"
@@ -59,7 +57,7 @@ STATIC xlog_t *  xlog_alloc_log(xfs_mount_t   *mp,
                                int             num_bblks);
 STATIC int      xlog_space_left(xlog_t *log, int cycle, int bytes);
 STATIC int      xlog_sync(xlog_t *log, xlog_in_core_t *iclog);
-STATIC void     xlog_unalloc_log(xlog_t *log);
+STATIC void     xlog_dealloc_log(xlog_t *log);
 STATIC int      xlog_write(xfs_mount_t *mp, xfs_log_iovec_t region[],
                            int nentries, xfs_log_ticket_t tic,
                            xfs_lsn_t *start_lsn,
@@ -304,7 +302,7 @@ xfs_log_done(xfs_mount_t    *mp,
        if ((ticket->t_flags & XLOG_TIC_PERM_RESERV) == 0 ||
            (flags & XFS_LOG_REL_PERM_RESERV)) {
                /*
-                * Release ticket if not permanent reservation or a specifc
+                * Release ticket if not permanent reservation or a specific
                 * request has been made to release a permanent reservation.
                 */
                xlog_trace_loggrant(log, ticket, "xfs_log_done: (non-permanent)");
@@ -402,7 +400,7 @@ xfs_log_release_iclog(xfs_mount_t *mp,
        xlog_in_core_t    *iclog = (xlog_in_core_t *)iclog_hndl;
 
        if (xlog_state_release_iclog(log, iclog)) {
-               xfs_force_shutdown(mp, XFS_LOG_IO_ERROR);
+               xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
                return EIO;
        }
 
@@ -498,9 +496,8 @@ xfs_log_mount(xfs_mount_t   *mp,
         * just worked.
         */
        if (!(mp->m_flags & XFS_MOUNT_NORECOVERY)) {
-               int     error;
-               vfs_t   *vfsp = XFS_MTOVFS(mp);
-               int     readonly = (vfsp->vfs_flag & VFS_RDONLY);
+               bhv_vfs_t       *vfsp = XFS_MTOVFS(mp);
+               int             error, readonly = (vfsp->vfs_flag & VFS_RDONLY);
 
                if (readonly)
                        vfsp->vfs_flag &= ~VFS_RDONLY;
@@ -511,7 +508,7 @@ xfs_log_mount(xfs_mount_t   *mp,
                        vfsp->vfs_flag |= VFS_RDONLY;
                if (error) {
                        cmn_err(CE_WARN, "XFS: log mount/recovery failed: error %d", error);
-                       xlog_unalloc_log(mp->m_log);
+                       xlog_dealloc_log(mp->m_log);
                        return error;
                }
        }
@@ -620,7 +617,8 @@ xfs_log_unmount_write(xfs_mount_t *mp)
                reg[0].i_len  = sizeof(magic);
                XLOG_VEC_SET_TYPE(&reg[0], XLOG_REG_TYPE_UNMOUNT);
 
-               error = xfs_log_reserve(mp, 600, 1, &tic, XFS_LOG, 0, 0);
+               error = xfs_log_reserve(mp, 600, 1, &tic,
+                                       XFS_LOG, 0, XLOG_UNMOUNT_REC_TYPE);
                if (!error) {
                        /* remove inited flag */
                        ((xlog_ticket_t *)tic)->t_flags = 0;
@@ -658,8 +656,11 @@ xfs_log_unmount_write(xfs_mount_t *mp)
                } else {
                        LOG_UNLOCK(log, s);
                }
-               if (tic)
+               if (tic) {
+                       xlog_trace_loggrant(log, tic, "unmount rec");
+                       xlog_ungrant_log_space(log, tic);
                        xlog_state_put_ticket(log, tic);
+               }
        } else {
                /*
                 * We're already in forced_shutdown mode, couldn't
@@ -667,7 +668,7 @@ xfs_log_unmount_write(xfs_mount_t *mp)
                 *
                 * Go through the motions of sync'ing and releasing
                 * the iclog, even though no I/O will actually happen,
-                * we need to wait for other log I/O's that may already
+                * we need to wait for other log I/Os that may already
                 * be in progress.  Do this as a separate section of
                 * code so we'll know if we ever get stuck here that
                 * we're in this odd situation of trying to unmount
@@ -704,7 +705,7 @@ xfs_log_unmount_write(xfs_mount_t *mp)
 void
 xfs_log_unmount_dealloc(xfs_mount_t *mp)
 {
-       xlog_unalloc_log(mp->m_log);
+       xlog_dealloc_log(mp->m_log);
 }
 
 /*
@@ -726,7 +727,7 @@ xfs_log_write(xfs_mount_t * mp,
                return XFS_ERROR(EIO);
 
        if ((error = xlog_write(mp, reg, nentries, tic, start_lsn, NULL, 0))) {
-               xfs_force_shutdown(mp, XFS_LOG_IO_ERROR);
+               xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
        }
        return error;
 }      /* xfs_log_write */
@@ -816,9 +817,9 @@ xfs_log_need_covered(xfs_mount_t *mp)
        SPLDECL(s);
        int             needed = 0, gen;
        xlog_t          *log = mp->m_log;
-       vfs_t           *vfsp = XFS_MTOVFS(mp);
+       bhv_vfs_t       *vfsp = XFS_MTOVFS(mp);
 
-       if (fs_frozen(vfsp) || XFS_FORCED_SHUTDOWN(mp) ||
+       if (vfs_test_for_freeze(vfsp) || XFS_FORCED_SHUTDOWN(mp) ||
            (vfsp->vfs_flag & VFS_RDONLY))
                return 0;
 
@@ -956,7 +957,7 @@ xlog_iodone(xfs_buf_t *bp)
                        XFS_ERRTAG_IODONE_IOERR, XFS_RANDOM_IODONE_IOERR)) {
                xfs_ioerror_alert("xlog_iodone", l->l_mp, bp, XFS_BUF_ADDR(bp));
                XFS_BUF_STALE(bp);
-               xfs_force_shutdown(l->l_mp, XFS_LOG_IO_ERROR);
+               xfs_force_shutdown(l->l_mp, SHUTDOWN_LOG_IO_ERROR);
                /*
                 * This flag will be propagated to the trans-committed
                 * callback routines to let them know that the log-commit
@@ -1199,7 +1200,7 @@ xlog_alloc_log(xfs_mount_t        *mp,
                          kmem_zalloc(sizeof(xlog_in_core_t), KM_SLEEP);
                iclog = *iclogp;
                iclog->hic_data = (xlog_in_core_2_t *)
-                         kmem_zalloc(iclogsize, KM_SLEEP);
+                         kmem_zalloc(iclogsize, KM_SLEEP | KM_LARGE);
 
                iclog->ic_prev = prev_iclog;
                prev_iclog = iclog;
@@ -1261,7 +1262,7 @@ xlog_commit_record(xfs_mount_t  *mp,
        ASSERT_ALWAYS(iclog);
        if ((error = xlog_write(mp, reg, 1, ticket, commitlsnp,
                               iclog, XLOG_COMMIT_TRANS))) {
-               xfs_force_shutdown(mp, XFS_LOG_IO_ERROR);
+               xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
        }
        return error;
 }      /* xlog_commit_record */
@@ -1416,7 +1417,7 @@ xlog_sync(xlog_t          *log,
        ops = iclog->ic_header.h_num_logops;
        INT_SET(iclog->ic_header.h_num_logops, ARCH_CONVERT, ops);
 
-       bp          = iclog->ic_bp;
+       bp = iclog->ic_bp;
        ASSERT(XFS_BUF_FSPRIVATE2(bp, unsigned long) == (unsigned long)1);
        XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)2);
        XFS_BUF_SET_ADDR(bp, BLOCK_LSN(INT_GET(iclog->ic_header.h_lsn, ARCH_CONVERT)));
@@ -1433,15 +1434,14 @@ xlog_sync(xlog_t                *log,
        }
        XFS_BUF_SET_PTR(bp, (xfs_caddr_t) &(iclog->ic_header), count);
        XFS_BUF_SET_FSPRIVATE(bp, iclog);       /* save for later */
+       XFS_BUF_ZEROFLAGS(bp);
        XFS_BUF_BUSY(bp);
        XFS_BUF_ASYNC(bp);
        /*
         * Do an ordered write for the log block.
-        *
-        * It may not be needed to flush the first split block in the log wrap
-        * case, but do it anyways to be safe -AK
+        * Its unnecessary to flush the first split block in the log wrap case.
         */
-       if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
+       if (!split && (log->l_mp->m_flags & XFS_MOUNT_BARRIER))
                XFS_BUF_ORDERED(bp);
 
        ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1);
@@ -1463,7 +1463,7 @@ xlog_sync(xlog_t          *log,
                return error;
        }
        if (split) {
-               bp              = iclog->ic_log->l_xbuf;
+               bp = iclog->ic_log->l_xbuf;
                ASSERT(XFS_BUF_FSPRIVATE2(bp, unsigned long) ==
                                                        (unsigned long)1);
                XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)2);
@@ -1471,6 +1471,7 @@ xlog_sync(xlog_t          *log,
                XFS_BUF_SET_PTR(bp, (xfs_caddr_t)((__psint_t)&(iclog->ic_header)+
                                            (__psint_t)count), split);
                XFS_BUF_SET_FSPRIVATE(bp, iclog);
+               XFS_BUF_ZEROFLAGS(bp);
                XFS_BUF_BUSY(bp);
                XFS_BUF_ASYNC(bp);
                if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
@@ -1492,7 +1493,7 @@ xlog_sync(xlog_t          *log,
                ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1);
                ASSERT(XFS_BUF_ADDR(bp) + BTOBB(count) <= log->l_logBBsize);
 
-               /* account for internal log which does't start at block #0 */
+               /* account for internal log which doesn't start at block #0 */
                XFS_BUF_SET_ADDR(bp, XFS_BUF_ADDR(bp) + log->l_logBBstart);
                XFS_BUF_WRITE(bp);
                if ((error = XFS_bwrite(bp))) {
@@ -1506,10 +1507,10 @@ xlog_sync(xlog_t                *log,
 
 
 /*
- * Unallocate a log structure
+ * Deallocate a log structure
  */
 void
-xlog_unalloc_log(xlog_t *log)
+xlog_dealloc_log(xlog_t *log)
 {
        xlog_in_core_t  *iclog, *next_iclog;
        xlog_ticket_t   *tic, *next_tic;
@@ -1539,7 +1540,7 @@ xlog_unalloc_log(xlog_t *log)
        if ((log->l_ticket_cnt != log->l_ticket_tcnt)  &&
            !XLOG_FORCED_SHUTDOWN(log)) {
                xfs_fs_cmn_err(CE_WARN, log->l_mp,
-                       "xlog_unalloc_log: (cnt: %d, total: %d)",
+                       "xlog_dealloc_log: (cnt: %d, total: %d)",
                        log->l_ticket_cnt, log->l_ticket_tcnt);
                /* ASSERT(log->l_ticket_cnt == log->l_ticket_tcnt); */
 
@@ -1562,7 +1563,7 @@ xlog_unalloc_log(xlog_t *log)
 #endif
        log->l_mp->m_log = NULL;
        kmem_free(log, sizeof(xlog_t));
-}      /* xlog_unalloc_log */
+}      /* xlog_dealloc_log */
 
 /*
  * Update counters atomically now that memcpy is done.
@@ -1743,10 +1744,10 @@ xlog_write(xfs_mount_t *        mp,
           xlog_in_core_t       **commit_iclog,
           uint                 flags)
 {
-    xlog_t          *log    = mp->m_log;
+    xlog_t          *log = mp->m_log;
     xlog_ticket_t    *ticket = (xlog_ticket_t *)tic;
+    xlog_in_core_t   *iclog = NULL;  /* ptr to current in-core log */
     xlog_op_header_t *logop_head;    /* ptr to log operation header */
-    xlog_in_core_t   *iclog;        /* ptr to current in-core log */
     __psint_t       ptr;            /* copy address into data region */
     int                     len;            /* # xlog_write() bytes 2 still copy */
     int                     index;          /* region index currently copying */
@@ -1790,7 +1791,7 @@ xlog_write(xfs_mount_t *  mp,
        xfs_cmn_err(XFS_PTAG_LOGRES, CE_ALERT, mp,
                "xfs_log_write: reservation ran out. Need to up reservation");
        /* If we did not panic, shutdown the filesystem */
-       xfs_force_shutdown(mp, XFS_CORRUPT_INCORE);
+       xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
 #endif
     } else
        ticket->t_curr_res -= len;
@@ -2215,9 +2216,13 @@ xlog_state_do_callback(
 
                        iclog = iclog->ic_next;
                } while (first_iclog != iclog);
-               if (repeats && (repeats % 10) == 0) {
+
+               if (repeats > 5000) {
+                       flushcnt += repeats;
+                       repeats = 0;
                        xfs_fs_cmn_err(CE_WARN, log->l_mp,
-                               "xlog_state_do_callback: looping %d", repeats);
+                               "%s: possible infinite loop (%d iterations)",
+                               __FUNCTION__, flushcnt);
                }
        } while (!ioerrors && loopdidcallbacks);
 
@@ -2249,6 +2254,7 @@ xlog_state_do_callback(
        }
 #endif
 
+       flushcnt = 0;
        if (log->l_iclog->ic_state & (XLOG_STATE_ACTIVE|XLOG_STATE_IOERROR)) {
                flushcnt = log->l_flushcnt;
                log->l_flushcnt = 0;
@@ -2829,7 +2835,7 @@ xlog_state_release_iclog(xlog_t           *log,
 
        /*
         * We let the log lock go, so it's possible that we hit a log I/O
-        * error or someother SHUTDOWN condition that marks the iclog
+        * error or some other SHUTDOWN condition that marks the iclog
         * as XLOG_STATE_IOERROR before the bwrite. However, we know that
         * this iclog has consistent data, so we ignore IOERROR
         * flags after this point.