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Code Issues Releases Activity

Move the new superblock field `fs_active' into the region of the

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superblock that is already set up to handle pointer types. This
fixes an accidental change in the superblock size on 64-bit platforms
caused by revision 1.24.
This commit is contained in:
Ian Dowse 2001-12-16 18:51:11 +00:00
parent 786b4a3132
commit 3fa4044e34
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=88025
1 changed files with 7 additions and 5 deletions
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12
sys/ufs/ffs/fs.h
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@ -108,7 +108,7 @@
/*
* There is a 128-byte region in the superblock reserved for in-core
* pointers to summary information. Originally this included an array
* of pointers to blocks of struct csum; now there are just three
* of pointers to blocks of struct csum; now there are just a few
* pointers and the remaining space is padded with fs_ocsp[].
*
* NOCSPTRS determines the size of this padding. One pointer (fs_csp)
@ -116,9 +116,11 @@
* all cylinder groups; a second (fs_maxcluster) points to an array
* of cluster sizes that is computed as cylinder groups are inspected,
* and the third points to an array that tracks the creation of new
* directories.
* directories. A fourth pointer, fs_active, is used when creating
* snapshots; it points to a bitmap of cylinder groups for which the
* free-block bitmap has changed since the snapshot operation began.
*/
#define NOCSPTRS ((128 / sizeof(void *)) - 3)
#define NOCSPTRS ((128 / sizeof(void *)) - 4)
/*
* A summary of contiguous blocks of various sizes is maintained
@ -290,13 +292,13 @@ struct fs {
u_int8_t *fs_contigdirs; /* # of contiguously allocated dirs */
struct csum *fs_csp; /* cg summary info buffer for fs_cs */
int32_t *fs_maxcluster; /* max cluster in each cyl group */
u_int8_t *fs_active; /* used by snapshots to track fs */
int32_t fs_cpc; /* cyl per cycle in postbl */
int16_t fs_opostbl[16][8]; /* old rotation block list head */
int32_t fs_snapinum[FSMAXSNAP];/* list of snapshot inode numbers */
int32_t fs_avgfilesize; /* expected average file size */
int32_t fs_avgfpdir; /* expected # of files per directory */
u_int8_t *fs_active; /* used by snapshots to track fs */
int32_t fs_sparecon[25]; /* reserved for future constants */
int32_t fs_sparecon[26]; /* reserved for future constants */
int32_t fs_pendingblocks; /* blocks in process of being freed */
int32_t fs_pendinginodes; /* inodes in process of being freed */
int32_t fs_contigsumsize; /* size of cluster summary array */