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Diffstat (limited to 'fs/gfs2/rgrp.c')
-rw-r--r--fs/gfs2/rgrp.c212
1 files changed, 132 insertions, 80 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 69317435faa7..c8d6161bd682 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -81,11 +81,12 @@ static inline void gfs2_setbit(const struct gfs2_rbm *rbm, bool do_clone,
unsigned char new_state)
{
unsigned char *byte1, *byte2, *end, cur_state;
- unsigned int buflen = rbm->bi->bi_len;
+ struct gfs2_bitmap *bi = rbm_bi(rbm);
+ unsigned int buflen = bi->bi_len;
const unsigned int bit = (rbm->offset % GFS2_NBBY) * GFS2_BIT_SIZE;
- byte1 = rbm->bi->bi_bh->b_data + rbm->bi->bi_offset + (rbm->offset / GFS2_NBBY);
- end = rbm->bi->bi_bh->b_data + rbm->bi->bi_offset + buflen;
+ byte1 = bi->bi_bh->b_data + bi->bi_offset + (rbm->offset / GFS2_NBBY);
+ end = bi->bi_bh->b_data + bi->bi_offset + buflen;
BUG_ON(byte1 >= end);
@@ -95,18 +96,17 @@ static inline void gfs2_setbit(const struct gfs2_rbm *rbm, bool do_clone,
printk(KERN_WARNING "GFS2: buf_blk = 0x%x old_state=%d, "
"new_state=%d\n", rbm->offset, cur_state, new_state);
printk(KERN_WARNING "GFS2: rgrp=0x%llx bi_start=0x%x\n",
- (unsigned long long)rbm->rgd->rd_addr,
- rbm->bi->bi_start);
+ (unsigned long long)rbm->rgd->rd_addr, bi->bi_start);
printk(KERN_WARNING "GFS2: bi_offset=0x%x bi_len=0x%x\n",
- rbm->bi->bi_offset, rbm->bi->bi_len);
+ bi->bi_offset, bi->bi_len);
dump_stack();
gfs2_consist_rgrpd(rbm->rgd);
return;
}
*byte1 ^= (cur_state ^ new_state) << bit;
- if (do_clone && rbm->bi->bi_clone) {
- byte2 = rbm->bi->bi_clone + rbm->bi->bi_offset + (rbm->offset / GFS2_NBBY);
+ if (do_clone && bi->bi_clone) {
+ byte2 = bi->bi_clone + bi->bi_offset + (rbm->offset / GFS2_NBBY);
cur_state = (*byte2 >> bit) & GFS2_BIT_MASK;
*byte2 ^= (cur_state ^ new_state) << bit;
}
@@ -121,7 +121,8 @@ static inline void gfs2_setbit(const struct gfs2_rbm *rbm, bool do_clone,
static inline u8 gfs2_testbit(const struct gfs2_rbm *rbm)
{
- const u8 *buffer = rbm->bi->bi_bh->b_data + rbm->bi->bi_offset;
+ struct gfs2_bitmap *bi = rbm_bi(rbm);
+ const u8 *buffer = bi->bi_bh->b_data + bi->bi_offset;
const u8 *byte;
unsigned int bit;
@@ -252,29 +253,53 @@ static u32 gfs2_bitfit(const u8 *buf, const unsigned int len,
static int gfs2_rbm_from_block(struct gfs2_rbm *rbm, u64 block)
{
u64 rblock = block - rbm->rgd->rd_data0;
- u32 x;
if (WARN_ON_ONCE(rblock > UINT_MAX))
return -EINVAL;
if (block >= rbm->rgd->rd_data0 + rbm->rgd->rd_data)
return -E2BIG;
- rbm->bi = rbm->rgd->rd_bits;
+ rbm->bii = 0;
rbm->offset = (u32)(rblock);
/* Check if the block is within the first block */
- if (rbm->offset < (rbm->bi->bi_start + rbm->bi->bi_len) * GFS2_NBBY)
+ if (rbm->offset < rbm_bi(rbm)->bi_blocks)
return 0;
/* Adjust for the size diff between gfs2_meta_header and gfs2_rgrp */
rbm->offset += (sizeof(struct gfs2_rgrp) -
sizeof(struct gfs2_meta_header)) * GFS2_NBBY;
- x = rbm->offset / rbm->rgd->rd_sbd->sd_blocks_per_bitmap;
- rbm->offset -= x * rbm->rgd->rd_sbd->sd_blocks_per_bitmap;
- rbm->bi += x;
+ rbm->bii = rbm->offset / rbm->rgd->rd_sbd->sd_blocks_per_bitmap;
+ rbm->offset -= rbm->bii * rbm->rgd->rd_sbd->sd_blocks_per_bitmap;
return 0;
}
/**
+ * gfs2_rbm_incr - increment an rbm structure
+ * @rbm: The rbm with rgd already set correctly
+ *
+ * This function takes an existing rbm structure and increments it to the next
+ * viable block offset.
+ *
+ * Returns: If incrementing the offset would cause the rbm to go past the
+ * end of the rgrp, true is returned, otherwise false.
+ *
+ */
+
+static bool gfs2_rbm_incr(struct gfs2_rbm *rbm)
+{
+ if (rbm->offset + 1 < rbm_bi(rbm)->bi_blocks) { /* in the same bitmap */
+ rbm->offset++;
+ return false;
+ }
+ if (rbm->bii == rbm->rgd->rd_length - 1) /* at the last bitmap */
+ return true;
+
+ rbm->offset = 0;
+ rbm->bii++;
+ return false;
+}
+
+/**
* gfs2_unaligned_extlen - Look for free blocks which are not byte aligned
* @rbm: Position to search (value/result)
* @n_unaligned: Number of unaligned blocks to check
@@ -285,7 +310,6 @@ static int gfs2_rbm_from_block(struct gfs2_rbm *rbm, u64 block)
static bool gfs2_unaligned_extlen(struct gfs2_rbm *rbm, u32 n_unaligned, u32 *len)
{
- u64 block;
u32 n;
u8 res;
@@ -296,8 +320,7 @@ static bool gfs2_unaligned_extlen(struct gfs2_rbm *rbm, u32 n_unaligned, u32 *le
(*len)--;
if (*len == 0)
return true;
- block = gfs2_rbm_to_block(rbm);
- if (gfs2_rbm_from_block(rbm, block + 1))
+ if (gfs2_rbm_incr(rbm))
return true;
}
@@ -328,6 +351,7 @@ static u32 gfs2_free_extlen(const struct gfs2_rbm *rrbm, u32 len)
u32 chunk_size;
u8 *ptr, *start, *end;
u64 block;
+ struct gfs2_bitmap *bi;
if (n_unaligned &&
gfs2_unaligned_extlen(&rbm, 4 - n_unaligned, &len))
@@ -336,11 +360,12 @@ static u32 gfs2_free_extlen(const struct gfs2_rbm *rrbm, u32 len)
n_unaligned = len & 3;
/* Start is now byte aligned */
while (len > 3) {
- start = rbm.bi->bi_bh->b_data;
- if (rbm.bi->bi_clone)
- start = rbm.bi->bi_clone;
- end = start + rbm.bi->bi_bh->b_size;
- start += rbm.bi->bi_offset;
+ bi = rbm_bi(&rbm);
+ start = bi->bi_bh->b_data;
+ if (bi->bi_clone)
+ start = bi->bi_clone;
+ end = start + bi->bi_bh->b_size;
+ start += bi->bi_offset;
BUG_ON(rbm.offset & 3);
start += (rbm.offset / GFS2_NBBY);
bytes = min_t(u32, len / GFS2_NBBY, (end - start));
@@ -605,11 +630,13 @@ static void __rs_deltree(struct gfs2_blkreserv *rs)
RB_CLEAR_NODE(&rs->rs_node);
if (rs->rs_free) {
+ struct gfs2_bitmap *bi = rbm_bi(&rs->rs_rbm);
+
/* return reserved blocks to the rgrp */
BUG_ON(rs->rs_rbm.rgd->rd_reserved < rs->rs_free);
rs->rs_rbm.rgd->rd_reserved -= rs->rs_free;
rs->rs_free = 0;
- clear_bit(GBF_FULL, &rs->rs_rbm.bi->bi_flags);
+ clear_bit(GBF_FULL, &bi->bi_flags);
smp_mb__after_clear_bit();
}
}
@@ -634,14 +661,13 @@ void gfs2_rs_deltree(struct gfs2_blkreserv *rs)
/**
* gfs2_rs_delete - delete a multi-block reservation
* @ip: The inode for this reservation
+ * @wcount: The inode's write count, or NULL
*
*/
-void gfs2_rs_delete(struct gfs2_inode *ip)
+void gfs2_rs_delete(struct gfs2_inode *ip, atomic_t *wcount)
{
- struct inode *inode = &ip->i_inode;
-
down_write(&ip->i_rw_mutex);
- if (ip->i_res && atomic_read(&inode->i_writecount) <= 1) {
+ if (ip->i_res && ((wcount == NULL) || (atomic_read(wcount) <= 1))) {
gfs2_rs_deltree(ip->i_res);
BUG_ON(ip->i_res->rs_free);
kmem_cache_free(gfs2_rsrv_cachep, ip->i_res);
@@ -743,18 +769,21 @@ static int compute_bitstructs(struct gfs2_rgrpd *rgd)
bi->bi_offset = sizeof(struct gfs2_rgrp);
bi->bi_start = 0;
bi->bi_len = bytes;
+ bi->bi_blocks = bytes * GFS2_NBBY;
/* header block */
} else if (x == 0) {
bytes = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_rgrp);
bi->bi_offset = sizeof(struct gfs2_rgrp);
bi->bi_start = 0;
bi->bi_len = bytes;
+ bi->bi_blocks = bytes * GFS2_NBBY;
/* last block */
} else if (x + 1 == length) {
bytes = bytes_left;
bi->bi_offset = sizeof(struct gfs2_meta_header);
bi->bi_start = rgd->rd_bitbytes - bytes_left;
bi->bi_len = bytes;
+ bi->bi_blocks = bytes * GFS2_NBBY;
/* other blocks */
} else {
bytes = sdp->sd_sb.sb_bsize -
@@ -762,6 +791,7 @@ static int compute_bitstructs(struct gfs2_rgrpd *rgd)
bi->bi_offset = sizeof(struct gfs2_meta_header);
bi->bi_start = rgd->rd_bitbytes - bytes_left;
bi->bi_len = bytes;
+ bi->bi_blocks = bytes * GFS2_NBBY;
}
bytes_left -= bytes;
@@ -1097,7 +1127,7 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
rgd->rd_flags |= (GFS2_RDF_UPTODATE | GFS2_RDF_CHECK);
rgd->rd_free_clone = rgd->rd_free;
}
- if (be32_to_cpu(GFS2_MAGIC) != rgd->rd_rgl->rl_magic) {
+ if (cpu_to_be32(GFS2_MAGIC) != rgd->rd_rgl->rl_magic) {
rgd->rd_rgl->rl_unlinked = cpu_to_be32(count_unlinked(rgd));
gfs2_rgrp_ondisk2lvb(rgd->rd_rgl,
rgd->rd_bits[0].bi_bh->b_data);
@@ -1131,7 +1161,7 @@ int update_rgrp_lvb(struct gfs2_rgrpd *rgd)
if (rgd->rd_flags & GFS2_RDF_UPTODATE)
return 0;
- if (be32_to_cpu(GFS2_MAGIC) != rgd->rd_rgl->rl_magic)
+ if (cpu_to_be32(GFS2_MAGIC) != rgd->rd_rgl->rl_magic)
return gfs2_rgrp_bh_get(rgd);
rl_flags = be32_to_cpu(rgd->rd_rgl->rl_flags);
@@ -1392,12 +1422,12 @@ static void rs_insert(struct gfs2_inode *ip)
* rg_mblk_search - find a group of multiple free blocks to form a reservation
* @rgd: the resource group descriptor
* @ip: pointer to the inode for which we're reserving blocks
- * @requested: number of blocks required for this allocation
+ * @ap: the allocation parameters
*
*/
static void rg_mblk_search(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip,
- unsigned requested)
+ const struct gfs2_alloc_parms *ap)
{
struct gfs2_rbm rbm = { .rgd = rgd, };
u64 goal;
@@ -1410,7 +1440,7 @@ static void rg_mblk_search(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip,
if (S_ISDIR(inode->i_mode))
extlen = 1;
else {
- extlen = max_t(u32, atomic_read(&rs->rs_sizehint), requested);
+ extlen = max_t(u32, atomic_read(&rs->rs_sizehint), ap->target);
extlen = clamp(extlen, RGRP_RSRV_MINBLKS, free_blocks);
}
if ((rgd->rd_free_clone < rgd->rd_reserved) || (free_blocks < extlen))
@@ -1554,14 +1584,14 @@ static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 minext,
const struct gfs2_inode *ip, bool nowrap)
{
struct buffer_head *bh;
- struct gfs2_bitmap *initial_bi;
+ int initial_bii;
u32 initial_offset;
u32 offset;
u8 *buffer;
- int index;
int n = 0;
int iters = rbm->rgd->rd_length;
int ret;
+ struct gfs2_bitmap *bi;
/* If we are not starting at the beginning of a bitmap, then we
* need to add one to the bitmap count to ensure that we search
@@ -1571,52 +1601,53 @@ static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 minext,
iters++;
while(1) {
- if (test_bit(GBF_FULL, &rbm->bi->bi_flags) &&
+ bi = rbm_bi(rbm);
+ if (test_bit(GBF_FULL, &bi->bi_flags) &&
(state == GFS2_BLKST_FREE))
goto next_bitmap;
- bh = rbm->bi->bi_bh;
- buffer = bh->b_data + rbm->bi->bi_offset;
+ bh = bi->bi_bh;
+ buffer = bh->b_data + bi->bi_offset;
WARN_ON(!buffer_uptodate(bh));
- if (state != GFS2_BLKST_UNLINKED && rbm->bi->bi_clone)
- buffer = rbm->bi->bi_clone + rbm->bi->bi_offset;
+ if (state != GFS2_BLKST_UNLINKED && bi->bi_clone)
+ buffer = bi->bi_clone + bi->bi_offset;
initial_offset = rbm->offset;
- offset = gfs2_bitfit(buffer, rbm->bi->bi_len, rbm->offset, state);
+ offset = gfs2_bitfit(buffer, bi->bi_len, rbm->offset, state);
if (offset == BFITNOENT)
goto bitmap_full;
rbm->offset = offset;
if (ip == NULL)
return 0;
- initial_bi = rbm->bi;
+ initial_bii = rbm->bii;
ret = gfs2_reservation_check_and_update(rbm, ip, minext);
if (ret == 0)
return 0;
if (ret > 0) {
- n += (rbm->bi - initial_bi);
+ n += (rbm->bii - initial_bii);
goto next_iter;
}
if (ret == -E2BIG) {
- index = 0;
+ rbm->bii = 0;
rbm->offset = 0;
- n += (rbm->bi - initial_bi);
+ n += (rbm->bii - initial_bii);
goto res_covered_end_of_rgrp;
}
return ret;
bitmap_full: /* Mark bitmap as full and fall through */
- if ((state == GFS2_BLKST_FREE) && initial_offset == 0)
- set_bit(GBF_FULL, &rbm->bi->bi_flags);
+ if ((state == GFS2_BLKST_FREE) && initial_offset == 0) {
+ struct gfs2_bitmap *bi = rbm_bi(rbm);
+ set_bit(GBF_FULL, &bi->bi_flags);
+ }
next_bitmap: /* Find next bitmap in the rgrp */
rbm->offset = 0;
- index = rbm->bi - rbm->rgd->rd_bits;
- index++;
- if (index == rbm->rgd->rd_length)
- index = 0;
+ rbm->bii++;
+ if (rbm->bii == rbm->rgd->rd_length)
+ rbm->bii = 0;
res_covered_end_of_rgrp:
- rbm->bi = &rbm->rgd->rd_bits[index];
- if ((index == 0) && nowrap)
+ if ((rbm->bii == 0) && nowrap)
break;
n++;
next_iter:
@@ -1645,7 +1676,7 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip
struct gfs2_inode *ip;
int error;
int found = 0;
- struct gfs2_rbm rbm = { .rgd = rgd, .bi = rgd->rd_bits, .offset = 0 };
+ struct gfs2_rbm rbm = { .rgd = rgd, .bii = 0, .offset = 0 };
while (1) {
down_write(&sdp->sd_log_flush_lock);
@@ -1800,12 +1831,12 @@ static bool gfs2_select_rgrp(struct gfs2_rgrpd **pos, const struct gfs2_rgrpd *b
/**
* gfs2_inplace_reserve - Reserve space in the filesystem
* @ip: the inode to reserve space for
- * @requested: the number of blocks to be reserved
+ * @ap: the allocation parameters
*
* Returns: errno
*/
-int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested, u32 aflags)
+int gfs2_inplace_reserve(struct gfs2_inode *ip, const struct gfs2_alloc_parms *ap)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *begin = NULL;
@@ -1817,17 +1848,16 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested, u32 aflags)
if (sdp->sd_args.ar_rgrplvb)
flags |= GL_SKIP;
- if (gfs2_assert_warn(sdp, requested))
+ if (gfs2_assert_warn(sdp, ap->target))
return -EINVAL;
if (gfs2_rs_active(rs)) {
begin = rs->rs_rbm.rgd;
- flags = 0; /* Yoda: Do or do not. There is no try */
} else if (ip->i_rgd && rgrp_contains_block(ip->i_rgd, ip->i_goal)) {
rs->rs_rbm.rgd = begin = ip->i_rgd;
} else {
rs->rs_rbm.rgd = begin = gfs2_blk2rgrpd(sdp, ip->i_goal, 1);
}
- if (S_ISDIR(ip->i_inode.i_mode) && (aflags & GFS2_AF_ORLOV))
+ if (S_ISDIR(ip->i_inode.i_mode) && (ap->aflags & GFS2_AF_ORLOV))
skip = gfs2_orlov_skip(ip);
if (rs->rs_rbm.rgd == NULL)
return -EBADSLT;
@@ -1869,14 +1899,14 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested, u32 aflags)
/* Get a reservation if we don't already have one */
if (!gfs2_rs_active(rs))
- rg_mblk_search(rs->rs_rbm.rgd, ip, requested);
+ rg_mblk_search(rs->rs_rbm.rgd, ip, ap);
/* Skip rgrps when we can't get a reservation on first pass */
if (!gfs2_rs_active(rs) && (loops < 1))
goto check_rgrp;
/* If rgrp has enough free space, use it */
- if (rs->rs_rbm.rgd->rd_free_clone >= requested) {
+ if (rs->rs_rbm.rgd->rd_free_clone >= ap->target) {
ip->i_rgd = rs->rs_rbm.rgd;
return 0;
}
@@ -1973,14 +2003,14 @@ static void gfs2_alloc_extent(const struct gfs2_rbm *rbm, bool dinode,
*n = 1;
block = gfs2_rbm_to_block(rbm);
- gfs2_trans_add_meta(rbm->rgd->rd_gl, rbm->bi->bi_bh);
+ gfs2_trans_add_meta(rbm->rgd->rd_gl, rbm_bi(rbm)->bi_bh);
gfs2_setbit(rbm, true, dinode ? GFS2_BLKST_DINODE : GFS2_BLKST_USED);
block++;
while (*n < elen) {
ret = gfs2_rbm_from_block(&pos, block);
if (ret || gfs2_testbit(&pos) != GFS2_BLKST_FREE)
break;
- gfs2_trans_add_meta(pos.rgd->rd_gl, pos.bi->bi_bh);
+ gfs2_trans_add_meta(pos.rgd->rd_gl, rbm_bi(&pos)->bi_bh);
gfs2_setbit(&pos, true, GFS2_BLKST_USED);
(*n)++;
block++;
@@ -2001,6 +2031,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart,
u32 blen, unsigned char new_state)
{
struct gfs2_rbm rbm;
+ struct gfs2_bitmap *bi;
rbm.rgd = gfs2_blk2rgrpd(sdp, bstart, 1);
if (!rbm.rgd) {
@@ -2011,15 +2042,15 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart,
while (blen--) {
gfs2_rbm_from_block(&rbm, bstart);
+ bi = rbm_bi(&rbm);
bstart++;
- if (!rbm.bi->bi_clone) {
- rbm.bi->bi_clone = kmalloc(rbm.bi->bi_bh->b_size,
- GFP_NOFS | __GFP_NOFAIL);
- memcpy(rbm.bi->bi_clone + rbm.bi->bi_offset,
- rbm.bi->bi_bh->b_data + rbm.bi->bi_offset,
- rbm.bi->bi_len);
+ if (!bi->bi_clone) {
+ bi->bi_clone = kmalloc(bi->bi_bh->b_size,
+ GFP_NOFS | __GFP_NOFAIL);
+ memcpy(bi->bi_clone + bi->bi_offset,
+ bi->bi_bh->b_data + bi->bi_offset, bi->bi_len);
}
- gfs2_trans_add_meta(rbm.rgd->rd_gl, rbm.bi->bi_bh);
+ gfs2_trans_add_meta(rbm.rgd->rd_gl, bi->bi_bh);
gfs2_setbit(&rbm, false, new_state);
}
@@ -2103,6 +2134,35 @@ out:
}
/**
+ * gfs2_set_alloc_start - Set starting point for block allocation
+ * @rbm: The rbm which will be set to the required location
+ * @ip: The gfs2 inode
+ * @dinode: Flag to say if allocation includes a new inode
+ *
+ * This sets the starting point from the reservation if one is active
+ * otherwise it falls back to guessing a start point based on the
+ * inode's goal block or the last allocation point in the rgrp.
+ */
+
+static void gfs2_set_alloc_start(struct gfs2_rbm *rbm,
+ const struct gfs2_inode *ip, bool dinode)
+{
+ u64 goal;
+
+ if (gfs2_rs_active(ip->i_res)) {
+ *rbm = ip->i_res->rs_rbm;
+ return;
+ }
+
+ if (!dinode && rgrp_contains_block(rbm->rgd, ip->i_goal))
+ goal = ip->i_goal;
+ else
+ goal = rbm->rgd->rd_last_alloc + rbm->rgd->rd_data0;
+
+ gfs2_rbm_from_block(rbm, goal);
+}
+
+/**
* gfs2_alloc_blocks - Allocate one or more blocks of data and/or a dinode
* @ip: the inode to allocate the block for
* @bn: Used to return the starting block number
@@ -2120,22 +2180,14 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks,
struct buffer_head *dibh;
struct gfs2_rbm rbm = { .rgd = ip->i_rgd, };
unsigned int ndata;
- u64 goal;
u64 block; /* block, within the file system scope */
int error;
- if (gfs2_rs_active(ip->i_res))
- goal = gfs2_rbm_to_block(&ip->i_res->rs_rbm);
- else if (!dinode && rgrp_contains_block(rbm.rgd, ip->i_goal))
- goal = ip->i_goal;
- else
- goal = rbm.rgd->rd_last_alloc + rbm.rgd->rd_data0;
-
- gfs2_rbm_from_block(&rbm, goal);
+ gfs2_set_alloc_start(&rbm, ip, dinode);
error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, 0, ip, false);
if (error == -ENOSPC) {
- gfs2_rbm_from_block(&rbm, goal);
+ gfs2_set_alloc_start(&rbm, ip, dinode);
error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, 0, NULL, false);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.