xfs_daddr_t blk_offset,
int num_bblks)
{
- int error;
+ int error = 0;
+ int min_logfsbs;
if (!(mp->m_flags & XFS_MOUNT_NORECOVERY))
xfs_notice(mp, "Mounting Filesystem");
}
/*
+ * Validate the given log space and drop a critical message via syslog
+ * if the log size is too small that would lead to some unexpected
+ * situations in transaction log space reservation stage.
+ *
+ * Note: we can't just reject the mount if the validation fails. This
+ * would mean that people would have to downgrade their kernel just to
+ * remedy the situation as there is no way to grow the log (short of
+ * black magic surgery with xfs_db).
+ *
+ * We can, however, reject mounts for CRC format filesystems, as the
+ * mkfs binary being used to make the filesystem should never create a
+ * filesystem with a log that is too small.
+ */
+ min_logfsbs = xfs_log_calc_minimum_size(mp);
+
+ if (mp->m_sb.sb_logblocks < min_logfsbs) {
+ xfs_warn(mp,
+ "Log size %d blocks too small, minimum size is %d blocks",
+ mp->m_sb.sb_logblocks, min_logfsbs);
+ error = EINVAL;
+ } else if (mp->m_sb.sb_logblocks > XFS_MAX_LOG_BLOCKS) {
+ xfs_warn(mp,
+ "Log size %d blocks too large, maximum size is %lld blocks",
+ mp->m_sb.sb_logblocks, XFS_MAX_LOG_BLOCKS);
+ error = EINVAL;
+ } else if (XFS_FSB_TO_B(mp, mp->m_sb.sb_logblocks) > XFS_MAX_LOG_BYTES) {
+ xfs_warn(mp,
+ "log size %lld bytes too large, maximum size is %lld bytes",
+ XFS_FSB_TO_B(mp, mp->m_sb.sb_logblocks),
+ XFS_MAX_LOG_BYTES);
+ error = EINVAL;
+ }
+ if (error) {
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ xfs_crit(mp, "AAIEEE! Log failed size checks. Abort!");
+ ASSERT(0);
+ goto out_free_log;
+ }
+ xfs_crit(mp,
+"Log size out of supported range. Continuing onwards, but if log hangs are\n"
+"experienced then please report this message in the bug report.");
+ }
+
+ /*
* Initialize the AIL now we have a log.
*/
error = xfs_trans_ail_init(mp);
* Unmount record used to have a string "Unmount filesystem--" in the
* data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE).
* We just write the magic number now since that particular field isn't
- * currently architecture converted and "nUmount" is a bit foo.
+ * currently architecture converted and "Unmount" is a bit foo.
* As far as I know, there weren't any dependencies on the old behaviour.
*/
xfs_alert_tag(mp, XFS_PTAG_LOGRES,
"xlog_write: reservation ran out. Need to up reservation");
- xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
+ xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
}
/*
* Set up the parameters of the region copy into the log. This has
* to handle region write split across multiple log buffers - this
* state is kept external to this function so that this code can
- * can be written in an obvious, self documenting manner.
+ * be written in an obvious, self documenting manner.
*/
static int
xlog_write_setup_copy(
}
/*
- * Allocate and initialise a new log ticket.
+ * Figure out the total log space unit (in bytes) that would be
+ * required for a log ticket.
*/
-struct xlog_ticket *
-xlog_ticket_alloc(
- struct xlog *log,
- int unit_bytes,
- int cnt,
- char client,
- bool permanent,
- xfs_km_flags_t alloc_flags)
+int
+xfs_log_calc_unit_res(
+ struct xfs_mount *mp,
+ int unit_bytes)
{
- struct xlog_ticket *tic;
- uint num_headers;
- int iclog_space;
-
- tic = kmem_zone_zalloc(xfs_log_ticket_zone, alloc_flags);
- if (!tic)
- return NULL;
+ struct xlog *log = mp->m_log;
+ int iclog_space;
+ uint num_headers;
/*
* Permanent reservations have up to 'cnt'-1 active log operations
unit_bytes += log->l_iclog_hsize;
/* for roundoff padding for transaction data and one for commit record */
- if (xfs_sb_version_haslogv2(&log->l_mp->m_sb) &&
- log->l_mp->m_sb.sb_logsunit > 1) {
+ if (xfs_sb_version_haslogv2(&mp->m_sb) && mp->m_sb.sb_logsunit > 1) {
/* log su roundoff */
- unit_bytes += 2*log->l_mp->m_sb.sb_logsunit;
+ unit_bytes += 2 * mp->m_sb.sb_logsunit;
} else {
/* BB roundoff */
- unit_bytes += 2*BBSIZE;
+ unit_bytes += 2 * BBSIZE;
}
+ return unit_bytes;
+}
+
+/*
+ * Allocate and initialise a new log ticket.
+ */
+struct xlog_ticket *
+xlog_ticket_alloc(
+ struct xlog *log,
+ int unit_bytes,
+ int cnt,
+ char client,
+ bool permanent,
+ xfs_km_flags_t alloc_flags)
+{
+ struct xlog_ticket *tic;
+ int unit_res;
+
+ tic = kmem_zone_zalloc(xfs_log_ticket_zone, alloc_flags);
+ if (!tic)
+ return NULL;
+
+ unit_res = xfs_log_calc_unit_res(log->l_mp, unit_bytes);
+
atomic_set(&tic->t_ref, 1);
tic->t_task = current;
INIT_LIST_HEAD(&tic->t_queue);
- tic->t_unit_res = unit_bytes;
- tic->t_curr_res = unit_bytes;
+ tic->t_unit_res = unit_res;
+ tic->t_curr_res = unit_res;
tic->t_cnt = cnt;
tic->t_ocnt = cnt;
tic->t_tid = prandom_u32();
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff