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Fix typos in comments; some style(9) fixes; no code changes.

Browse Source 
PR:	misc/50979
Submitted by:	Lukas Ertl <l.ertl@univie.ac.at>
This commit is contained in:
Jens Schweikhardt 2003-04-26 15:22:29 +00:00
parent 0b9b179991
commit 6ded053322
1 changed files with 117 additions and 121 deletions
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238
sbin/growfs/growfs.c
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@ -2,10 +2,10 @@
* Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz
* Copyright (c) 1980, 1989, 1993 The Regents of the University of California.
* All rights reserved.
*
*
* This code is derived from software contributed to Berkeley by
* Christoph Herrmann and Thomas-Henning von Kamptz, Munich and Frankfurt.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
@ -22,7 +22,7 @@
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@ -112,7 +112,7 @@ static char inobuf[MAXBSIZE]; /* inode block */
static int maxino; /* last valid inode */
/*
* An array of elements of type struct gfs_bpp describes all blocks to
* An array of elements of type struct gfs_bpp describes all blocks to
* be relocated in order to free the space needed for the cylinder group
* summary for all cylinder groups located in the first cylinder group.
*/
@ -151,13 +151,13 @@ static void indirchk(ufs_lbn_t, ufs_lbn_t, ufs2_daddr_t, ufs_lbn_t,
/* ************************************************************ growfs ***** */
/*
* Here we actually start growing the file system. We basically read the
* cylinder summary from the first cylinder group as we want to update
* this on the fly during our various operations. First we handle the
* Here we actually start growing the file system. We basically read the
* cylinder summary from the first cylinder group as we want to update
* this on the fly during our various operations. First we handle the
* changes in the former last cylinder group. Afterwards we create all new
* cylinder groups. Now we handle the cylinder group containing the
* cylinder summary which might result in a relocation of the whole
* structure. In the end we write back the updated cylinder summary, the
* cylinder groups. Now we handle the cylinder group containing the
* cylinder summary which might result in a relocation of the whole
* structure. In the end we write back the updated cylinder summary, the
* new superblock, and slightly patched versions of the super block
* copies.
*/
@ -317,7 +317,7 @@ growfs(int fsi, int fso, unsigned int Nflag)
/*
* XXX
* The following fields are currently distributed from the superblock
* The following fields are currently distributed from the superblock
* to the copies:
* fs_minfree
* fs_rotdelay
@ -329,10 +329,10 @@ growfs(int fsi, int fso, unsigned int Nflag)
*
* We probably should rather change the summary for the cylinder group
* statistics here to the value of what would be in there, if the file
* system were created initially with the new size. Therefor we still
* system were created initially with the new size. Therefor we still
* need to find an easy way of calculating that.
* Possibly we can try to read the first superblock copy and apply the
* "diffed" stats between the old and new superblock by still copying
* "diffed" stats between the old and new superblock by still copying
* certain parameters onto that.
*/
@ -353,9 +353,9 @@ growfs(int fsi, int fso, unsigned int Nflag)
/* ************************************************************ initcg ***** */
/*
* This creates a new cylinder group structure, for more details please see
* the source of newfs(8), as this function is taken over almost unchanged.
* As this is never called for the first cylinder group, the special
* This creates a new cylinder group structure, for more details please see
* the source of newfs(8), as this function is taken over almost unchanged.
* As this is never called for the first cylinder group, the special
* provisions for that case are removed here.
*/
static void
@ -535,9 +535,9 @@ initcg(int cylno, time_t utime, int fso, unsigned int Nflag)
/* ******************************************************* frag_adjust ***** */
/*
* Here we add or subtract (sign +1/-1) the available fragments in a given
* Here we add or subtract (sign +1/-1) the available fragments in a given
* block to or from the fragment statistics. By subtracting before and adding
* after an operation on the free frag map we can easy update the fragment
* after an operation on the free frag map we can easy update the fragment
* statistic, which seems to be otherwise a rather complex operation.
*/
static void
@ -554,11 +554,11 @@ frag_adjust(ufs2_daddr_t frag, int sign)
* Here frag only needs to point to any fragment in the block we want
* to examine.
*/
for(f=rounddown(frag, sblock.fs_frag);
for(f=rounddown(frag, sblock.fs_frag);
f<roundup(frag+1, sblock.fs_frag);
f++) {
/*
* Count contiguos free fragments.
* Count contiguous free fragments.
*/
if(isset(cg_blksfree(&acg), f)) {
fragsize++;
@ -595,9 +595,9 @@ frag_adjust(ufs2_daddr_t frag, int sign)
/* ******************************************************* cond_bl_upd ***** */
/*
* Here we conditionally update a pointer to a fragment. We check for all
* relocated blocks if any of it's fragments is referenced by the current
* field, and update the pointer to the respective fragment in our new
* block. If we find a reference we write back the block immediately,
* relocated blocks if any of its fragments is referenced by the current
* field, and update the pointer to the respective fragment in our new
* block. If we find a reference we write back the block immediately,
* as there is no easy way for our general block reading engine to figure
* out if a write back operation is needed.
*/
@ -657,13 +657,13 @@ cond_bl_upd(ufs2_daddr_t *block, struct gfs_bpp *field, int fsi, int fso,
/* ************************************************************ updjcg ***** */
/*
* Here we do all needed work for the former last cylinder group. It has to be
* changed in any case, even if the file system ended exactly on the end of
* this group, as there is some slightly inconsistent handling of the number
* of cylinders in the cylinder group. We start again by reading the cylinder
* changed in any case, even if the file system ended exactly on the end of
* this group, as there is some slightly inconsistent handling of the number
* of cylinders in the cylinder group. We start again by reading the cylinder
* group from disk. If the last block was not fully available, we first handle
* the missing fragments, then we handle all new full blocks in that file
* system and finally we handle the new last fragmented block in the file
* system. We again have to handle the fragment statistics rotational layout
* the missing fragments, then we handle all new full blocks in that file
* system and finally we handle the new last fragmented block in the file
* system. We again have to handle the fragment statistics rotational layout
* tables and cluster summary during all those operations.
*/
static void
@ -691,12 +691,12 @@ updjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag)
memcpy((void *)&cgun1, (void *)&cgun2, sizeof(cgun2));
/*
* If the cylinder group had already it's new final size almost
* If the cylinder group had already its new final size almost
* nothing is to be done ... except:
* For some reason the value of cg_ncyl in the last cylinder group has
* to be zero instead of fs_cpg. As this is now no longer the last
* to be zero instead of fs_cpg. As this is now no longer the last
* cylinder group we have to change that value now to fs_cpg.
*/
*/
if(cgbase(&osblock, cylno+1) == osblock.fs_size) {
if (sblock.fs_magic == FS_UFS1_MAGIC)
@ -760,11 +760,11 @@ updjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag)
}
/*
* Now we have to update the free fragment bitmap for our new free
* space. There again we have to handle the fragmentation and also
* the rotational layout tables and the cluster summary. This is
* also done per fragment for the first new block if the old file
* system end was not on a block boundary, per fragment for the new
* Now we have to update the free fragment bitmap for our new free
* space. There again we have to handle the fragmentation and also
* the rotational layout tables and the cluster summary. This is
* also done per fragment for the first new block if the old file
* system end was not on a block boundary, per fragment for the new
* last block if the new file system end is not on a block boundary,
* and per block for all space in between.
*
@ -787,7 +787,7 @@ updjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag)
}
/*
* Check if the fragment just created could join an
* Check if the fragment just created could join an
* already existing fragment at the former end of the
* file system.
*/
@ -795,7 +795,7 @@ updjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag)
((osblock.fs_size - cgbase(&sblock, cylno))/
sblock.fs_frag))) {
/*
* The block is now completely available
* The block is now completely available.
*/
DBG_PRINT0("block was\n");
acg.cg_frsum[osblock.fs_size%sblock.fs_frag]--;
@ -864,7 +864,7 @@ updjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag)
/*
* Handle the last new block if there are stll some new fragments left.
* Here we don't have to bother about the cluster summary or the even
* Here we don't have to bother about the cluster summary or the even
* the rotational layout table.
*/
if (i < (dmax - cbase)) {
@ -904,19 +904,19 @@ updjcg(int cylno, time_t utime, int fsi, int fso, unsigned int Nflag)
/* ********************************************************** updcsloc ***** */
/*
* Here we update the location of the cylinder summary. We have two possible
* Here we update the location of the cylinder summary. We have two possible
* ways of growing the cylinder summary.
* (1) We can try to grow the summary in the current location, and relocate
* (1) We can try to grow the summary in the current location, and relocate
* possibly used blocks within the current cylinder group.
* (2) Alternatively we can relocate the whole cylinder summary to the first
* new completely empty cylinder group. Once the cylinder summary is no
* longer in the beginning of the first cylinder group you should never
* use a version of fsck which is not aware of the possibility to have
* new completely empty cylinder group. Once the cylinder summary is no
* longer in the beginning of the first cylinder group you should never
* use a version of fsck which is not aware of the possibility to have
* this structure in a non standard place.
* Option (1) is considered to be less intrusive to the structure of the file-
* Option (1) is considered to be less intrusive to the structure of the file-
* system. So we try to stick to that whenever possible. If there is not enough
* space in the cylinder group containing the cylinder summary we have to use
* method (2). In case of active snapshots in the file system we probably can
* space in the cylinder group containing the cylinder summary we have to use
* method (2). In case of active snapshots in the file system we probably can
* completely avoid implementing copy on write if we stick to method (2) only.
*/
static void
@ -972,27 +972,27 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
/*
* XXX In the case of having active snapshots we may need much more
* blocks for the copy on write. We need each block twice, and
* also up to 8*3 blocks for indirect blocks for all possible
* blocks for the copy on write. We need each block twice, and
* also up to 8*3 blocks for indirect blocks for all possible
* references.
*/
if(/*((int)sblock.fs_time&0x3)>0||*/ cs->cs_nbfree < blocks) {
/*
* There is not enough space in the old cylinder group to
* relocate all blocks as needed, so we relocate the whole
* cylinder group summary to a new group. We try to use the
* There is not enough space in the old cylinder group to
* relocate all blocks as needed, so we relocate the whole
* cylinder group summary to a new group. We try to use the
* first complete new cylinder group just created. Within the
* cylinder group we allign the area immediately after the
* cylinder group information location in order to be as
* cylinder group we align the area immediately after the
* cylinder group information location in order to be as
* close as possible to the original implementation of ffs.
*
* First we have to make sure we'll find enough space in the
* new cylinder group. If not, then we currently give up.
* We start with freeing everything which was used by the
* First we have to make sure we'll find enough space in the
* new cylinder group. If not, then we currently give up.
* We start with freeing everything which was used by the
* fragments of the old cylinder summary in the current group.
* Now we write back the group meta data, read in the needed
* Now we write back the group meta data, read in the needed
* meta data from the new cylinder group, and start allocating
* within that group. Here we can assume, the group to be
* within that group. Here we can assume, the group to be
* completely empty. Which makes the handling of fragments and
* clusters a lot easier.
*/
@ -1009,7 +1009,7 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
/*
* Set up last cluster size ("lcs") already here. Calculate
* the size for the trailing cluster just behind where "d"
* the size for the trailing cluster just behind where "d"
* points to.
*/
if(sblock.fs_contigsumsize > 0) {
@ -1044,16 +1044,15 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
sblock.fs_cstotal.cs_nffree++;
}
/*
* Point "d" to the last fragment of the last
* (incomplete) block of the clinder summary.
* Point "d" to the last fragment of the last
* (incomplete) block of the cylinder summary.
*/
d++;
frag_adjust(d%sblock.fs_fpg, 1);
if(isblock(&sblock, cg_blksfree(&acg),
(d%sblock.fs_fpg)/sblock.fs_frag)) {
DBG_PRINT1("d=%d\n",
d);
DBG_PRINT1("d=%d\n", d);
acg.cg_cs.cs_nffree-=sblock.fs_frag;
acg.cg_cs.cs_nbfree++;
sblock.fs_cstotal.cs_nffree-=sblock.fs_frag;
@ -1078,13 +1077,11 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
d--;
}
DBG_PRINT1("d=%d\n",
d);
DBG_PRINT1("d=%d\n", d);
for(d=rounddown(d, sblock.fs_frag); d >= osblock.fs_csaddr;
d-=sblock.fs_frag) {
DBG_TRC;
DBG_PRINT1("d=%d\n",
d);
DBG_PRINT1("d=%d\n", d);
setblock(&sblock, cg_blksfree(&acg),
(d%sblock.fs_fpg)/sblock.fs_frag);
acg.cg_cs.cs_nbfree++;
@ -1191,7 +1188,7 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
frag_adjust(d%sblock.fs_fpg, +1);
}
/*
* XXX Handle the cluster statistics here in the case this
* XXX Handle the cluster statistics here in the case this
* cylinder group is now almost full, and the remaining
* space is less then the maximum cluster size. This is
* probably not needed, as you would hardly find a file
@ -1221,7 +1218,7 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
}
/*
* We have got enough of space in the current cylinder group, so we
* can relocate just a few blocks, and let the summary information
* can relocate just a few blocks, and let the summary information
* grow in place where it is right now.
*/
DBG_TRC;
@ -1246,11 +1243,11 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
sizeof(struct gfs_bpp));
/*
* Lock all new frags needed for the cylinder group summary. This is
* done per fragment in the first and last block of the new required
* Lock all new frags needed for the cylinder group summary. This is
* done per fragment in the first and last block of the new required
* area, and per block for all other blocks.
*
* Handle the first new block here (but only if some fragments where
* Handle the first new block here (but only if some fragments where
* already used for the cylinder summary).
*/
ind=0;
@ -1274,7 +1271,7 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
}
/*
* No cluster handling is needed here, as there was at least
* one fragment in use by the cylinder summary in the old
* one fragment in use by the cylinder summary in the old
* file system.
* No block-free counter handling here as this block was not
* a free block.
@ -1380,7 +1377,7 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
if(!bp[i].old) { /* no more blocks listed */
/*
* XXX A relative blocknumber should not be
* zero, which is not explicitly
* zero, which is not explicitly
* guaranteed by our code.
*/
break;
@ -1407,11 +1404,11 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
}
/*
* Special handling is required if this was the first
* Special handling is required if this was the first
* block. We have to consider the fragments which were
* used by the cylinder summary in the original block
* which re to be free in the copy of our block. We
* have to be careful if this first block happens to
* used by the cylinder summary in the original block
* which re to be free in the copy of our block. We
* have to be careful if this first block happens to
* be also the last block to be relocated.
*/
if(bp[i].flags & GFS_FL_FIRST) {
@ -1426,7 +1423,6 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
if(!(bp[i].flags & GFS_FL_LAST)) {
frag_adjust(bp[i].new*sblock.fs_frag,1);
}
}
/*
@ -1449,7 +1445,7 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
}
/*
* !!! Attach the cylindergroup offset here.
* !!! Attach the cylindergroup offset here.
*/
bp[i].old+=cbase/sblock.fs_frag;
bp[i].new+=cbase/sblock.fs_frag;
@ -1476,8 +1472,8 @@ updcsloc(time_t utime, int fsi, int fso, unsigned int Nflag)
/*
* Now we have to update all references to any fragment which
* belongs to any block relocated. We iterate now over all
* cylinder groups, within those over all non zero length
* belongs to any block relocated. We iterate now over all
* cylinder groups, within those over all non zero length
* inodes.
*/
for(cylno=0; cylno<osblock.fs_ncg; cylno++) {
@ -1582,7 +1578,7 @@ wtfs(ufs2_daddr_t bno, size_t size, void *bf, int fso, unsigned int Nflag)
/* ************************************************************* alloc ***** */
/*
* Here we allocate a free block in the current cylinder group. It is assumed,
* that acg contains the current cylinder group. As we may take a block from
* that acg contains the current cylinder group. As we may take a block from
* somewhere in the file system we have to handle cluster summary here.
*/
static ufs2_daddr_t
@ -1609,7 +1605,7 @@ alloc(void)
}
/*
* We start seeking for free blocks only from the space available after
* the end of the new grown cylinder summary. Otherwise we allocate a
* the end of the new grown cylinder summary. Otherwise we allocate a
* block here which we have to relocate a couple of seconds later again
* again, and we are not prepared to to this anyway.
*/
@ -1669,7 +1665,7 @@ alloc(void)
*/
clrbit(cg_clustersfree(&acg), blkno);
/*
* We possibly have split a cluster here, so we have to do
* We possibly have split a cluster here, so we have to do
* recalculate the sizes of the remaining cluster halves now,
* and use them for updating the cluster summary information.
*
@ -1715,7 +1711,7 @@ alloc(void)
/* *********************************************************** isblock ***** */
/*
* Here we check if all frags of a block are free. For more details again
* Here we check if all frags of a block are free. For more details again
* please see the source of newfs(8), as this function is taken over almost
* unchanged.
*/
@ -1753,7 +1749,7 @@ isblock(struct fs *fs, unsigned char *cp, int h)
/* ********************************************************** clrblock ***** */
/*
* Here we allocate a complete block in the block map. For more details again
* please see the source of newfs(8), as this function is taken over almost
* please see the source of newfs(8), as this function is taken over almost
* unchanged.
*/
static void
@ -1788,7 +1784,7 @@ clrblock(struct fs *fs, unsigned char *cp, int h)
/* ********************************************************** setblock ***** */
/*
* Here we free a complete block in the free block map. For more details again
* please see the source of newfs(8), as this function is taken over almost
* please see the source of newfs(8), as this function is taken over almost
* unchanged.
*/
static void
@ -1823,9 +1819,9 @@ setblock(struct fs *fs, unsigned char *cp, int h)
/* ************************************************************ ginode ***** */
/*
* This function provides access to an individual inode. We find out in which
* block the requested inode is located, read it from disk if needed, and
* return the pointer into that block. We maintain a cache of one block to
* not read the same block again and again if we iterate linearly over all
* block the requested inode is located, read it from disk if needed, and
* return the pointer into that block. We maintain a cache of one block to
* not read the same block again and again if we iterate linearly over all
* inodes.
*/
static union dinode *
@ -1856,7 +1852,7 @@ ginode(ino_t inumber, int fsi, int cg)
/* ****************************************************** charsperline ***** */
/*
* Figure out how many lines our current terminal has. For more details again
* please see the source of newfs(8), as this function is taken over almost
* please see the source of newfs(8), as this function is taken over almost
* unchanged.
*/
static int
@ -1886,25 +1882,25 @@ charsperline(void)
/* ************************************************************** main ***** */
/*
* growfs(8) is a utility which allows to increase the size of an existing
* ufs file system. Currently this can only be done on unmounted file system.
* It recognizes some command line options to specify the new desired size,
* and it does some basic checkings. The old file system size is determined
* and after some more checks like we can really access the new last block
* growfs(8) is a utility which allows to increase the size of an existing
* ufs file system. Currently this can only be done on unmounted file system.
* It recognizes some command line options to specify the new desired size,
* and it does some basic checkings. The old file system size is determined
* and after some more checks like we can really access the new last block
* on the disk etc. we calculate the new parameters for the superblock. After
* having done this we just call growfs() which will do the work. Before
* having done this we just call growfs() which will do the work. Before
* we finish the only thing left is to update the disklabel.
* We still have to provide support for snapshots. Therefore we first have to
* understand what data structures are always replicated in the snapshot on
* creation, for all other blocks we touch during our procedure, we have to
* understand what data structures are always replicated in the snapshot on
* creation, for all other blocks we touch during our procedure, we have to
* keep the old blocks unchanged somewhere available for the snapshots. If we
* are lucky, then we only have to handle our blocks to be relocated in that
* are lucky, then we only have to handle our blocks to be relocated in that
* way.
* Also we have to consider in what order we actually update the critical
* Also we have to consider in what order we actually update the critical
* data structures of the file system to make sure, that in case of a disaster
* fsck(8) is still able to restore any lost data.
* The foreseen last step then will be to provide for growing even mounted
* file systems. There we have to extend the mount() system call to provide
* The foreseen last step then will be to provide for growing even mounted
* file systems. There we have to extend the mount() system call to provide
* userland access to the file system locking facility.
*/
int
@ -1968,8 +1964,8 @@ main(int argc, char **argv)
* /dev/%s
* /dev/vinum/r%s
* /dev/vinum/%s.
*
* FreeBSD now doesn't distinguish between raw and block
*
* FreeBSD now doesn't distinguish between raw and block
* devices any longer, but it should still work this way.
*/
len=strlen(device)+strlen(_PATH_DEV)+2+strlen("vinum/");
@ -2014,9 +2010,9 @@ main(int argc, char **argv)
}
/*
* Try to read a label and gess the slice if not specified. This
* code should guess the right thing and avaid to bother the user
* user with the task of specifying the option -v on vinum volumes.
* Try to read a label and guess the slice if not specified. This
* code should guess the right thing and avoid to bother the user
* with the task of specifying the option -v on vinum volumes.
*/
cp=device+strlen(device)-1;
lp = get_disklabel(fsi);
@ -2031,7 +2027,7 @@ main(int argc, char **argv)
}
/*
* Check if that partition looks suited for growing a file system.
* Check if that partition is suitable for growing a file system.
*/
if (pp->p_size < 1) {
errx(1, "partition is unavailable");
@ -2073,7 +2069,7 @@ main(int argc, char **argv)
errx(1, "There is not enough space (%d < %d)",
pp->p_size, size);
}
sblock.fs_size = dbtofsb(&osblock, size);
sblock.fs_size = dbtofsb(&osblock, size);
}
/*
@ -2111,7 +2107,7 @@ main(int argc, char **argv)
if (strcmp(reply, "Yes\n")){
printf("\n Nothing done \n");
exit (0);
}
}
}
printf("new file systemsize is: %d frags\n", sblock.fs_size);
@ -2167,7 +2163,7 @@ main(int argc, char **argv)
*/
sblock.fs_cssize =
fragroundup(&sblock, sblock.fs_ncg * sizeof(struct csum));
if(osblock.fs_size >= sblock.fs_size) {
errx(1, "not enough new space");
}
@ -2269,7 +2265,7 @@ get_disklabel(int fd)
*/
static void
usage(void)
{
{
DBG_FUNC("usage")
DBG_ENTER;
@ -2282,12 +2278,12 @@ usage(void)
/* *********************************************************** updclst ***** */
/*
* This updates most paramters and the bitmap related to cluster. We have to
* assume, that sblock, osblock, acg are set up.
* This updates most parameters and the bitmap related to cluster. We have to
* assume that sblock, osblock, acg are set up.
*/
static void
updclst(int block)
{
{
DBG_FUNC("updclst")
static int lcs=0;
@ -2313,7 +2309,7 @@ updclst(int block)
break;
}
}
}
}
if(lcs < sblock.fs_contigsumsize) {
if(lcs) {
cg_clustersum(&acg)[lcs]--;
@ -2335,7 +2331,7 @@ updclst(int block)
static void
updrefs(int cg, ino_t in, struct gfs_bpp *bp, int fsi, int fso, unsigned int
Nflag)
{
{
DBG_FUNC("updrefs")
ufs_lbn_t len, lbn, numblks;
ufs2_daddr_t iptr, blksperindir;