[XFS] Ensure that 2 GiB xfs logs work properly. (d729eae8) · Commits · 戴 / test

We found this while experimenting with 2GiB xfs logs. The previous code never assumed that xfs logs would ever get so large. SGI-PV: 981502 SGI-Modid: xfs-linux-melb:xfs-kern:31058a Signed-off-by:

Michael Nishimoto <miken@agami.com> Signed-off-by:

David Chinner <dgc@sgi.com> Signed-off-by:

Lachlan McIlroy <lachlan@sgi.com>

fs/xfs/xfs_log.c

+10 −6

Original line number	Diff line number	Diff line
		@@ -226,20 +226,24 @@ xlog_grant_sub_space(struct log *log, int bytes)
		static void
		xlog_grant_add_space_write(struct log *log, int bytes)
		{
		int tmp = log->l_logsize - log->l_grant_write_bytes;
		if (tmp > bytes)
		log->l_grant_write_bytes += bytes;
		if (log->l_grant_write_bytes > log->l_logsize) {
		log->l_grant_write_bytes -= log->l_logsize;
		else {
		log->l_grant_write_cycle++;
		log->l_grant_write_bytes = bytes - tmp;
		}
		}

		static void
		xlog_grant_add_space_reserve(struct log *log, int bytes)
		{
		int tmp = log->l_logsize - log->l_grant_reserve_bytes;
		if (tmp > bytes)
		log->l_grant_reserve_bytes += bytes;
		if (log->l_grant_reserve_bytes > log->l_logsize) {
		log->l_grant_reserve_bytes -= log->l_logsize;
		else {
		log->l_grant_reserve_cycle++;
		log->l_grant_reserve_bytes = bytes - tmp;
		}
		}

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