fs/xfs/xfs_rtalloc.c

25  * Read and return the summary information for a given extent size,
27  * Keeps track of a current summary block, so we don't keep reading
36 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
37 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
38 	xfs_suminfo_t	*sum)		/* out: summary info for this block */
54 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
55 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
60 	xfs_suminfo_t	sum;		/* summary data */
71 		 * Get one summary datum.
98  * Copy and transform the summary file, given the old and new
108 	struct xfs_buf	*bp;		/* summary buffer */
110 	int		log;		/* summary level number (log length) */
111 	xfs_suminfo_t	sum;		/* summary data */
112 	xfs_fsblock_t	sumbno;		/* summary block number */
140  * Updates all the summary information as well as the bitmap.
148 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
149 	xfs_fsblock_t	*rsb)		/* in/out: summary block number */
160 	 * properly update the summary.
175 	 * Decrement the summary information corresponding to the entire
186 	 * old extent, add summary data for them to be free.
198 	 * old extent, add summary data for them to be free.
247 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
248 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
366 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
367 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
446 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
447 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
451 	int		any;		/* any useful extents from summary */
501 		 * Get summary information of extents of all useful levels
548 					 * Grab the summary information for
559 					 * summary that means the extent we
586 				 * Try to allocate from the summary block
650 	struct xfs_buf	**rbpp,		/* in/out: summary block buffer */
651 	xfs_fsblock_t	*rsb,		/* in/out: summary block number */
660 	xfs_suminfo_t	sum;		/* summary information for extents */
671 	 * the summary says there's an extent.
679 			 * Get the summary for this level/block.
738 			 * Get the summary information for this level/block.
753 			 * this summary level.
786  * Allocate space to the bitmap or summary file, and zero it, for growfs.
793 	struct xfs_inode	*ip)		/* inode (bitmap/summary) */
915 		xfs_warn(mp, "could not allocate realtime summary cache");
971 	xfs_extlen_t	nrsumblocks;	/* new number of summary blocks */
972 	uint		nrsumlevels;	/* new rt summary levels */
973 	uint		nrsumsize;	/* new size of rt summary, bytes */
976 	xfs_extlen_t	rsumblocks;	/* current number of rt summary blks */
978 	xfs_fsblock_t	sumbno;		/* summary block number */
979 	uint8_t		*rsum_cache;	/* old summary cache */
994 	 * Mount should fail if the rt bitmap/summary files don't load, but
1049 	 * New summary size can't be more than half the size of
1051 	 * since we'll log basically the whole summary file at once.
1059 	 * Get the old block counts for bitmap and summary inodes.
1065 	 * Allocate space to the bitmap and summary files, as necessary.
1140 		 * Get the summary inode into the transaction.
1145 		 * Update the summary inode's size.  We need to update the
1153 		 * Copy summary data from old to new sizes.
1267 	xfs_fsblock_t	sb;		/* summary file block number */
1268 	struct xfs_buf	*sumbp;		/* summary file block buffer */
1443  * Get the bitmap and summary inodes and the summary cache into the mount