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Diffstat (limited to 'fs/gfs2/rgrp.c')
-rw-r--r--fs/gfs2/rgrp.c102
1 files changed, 50 insertions, 52 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 3df65c9ab73..f74fb9bd197 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -70,15 +70,15 @@ static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
/**
* gfs2_setbit - Set a bit in the bitmaps
- * @buffer: the buffer that holds the bitmaps
- * @buflen: the length (in bytes) of the buffer
+ * @rgd: the resource group descriptor
+ * @buf2: the clone buffer that holds the bitmaps
+ * @bi: the bitmap structure
* @block: the block to set
* @new_state: the new state of the block
*
*/
-static inline void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buf1,
- unsigned char *buf2, unsigned int offset,
+static inline void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buf2,
struct gfs2_bitmap *bi, u32 block,
unsigned char new_state)
{
@@ -86,8 +86,8 @@ static inline void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buf1,
unsigned int buflen = bi->bi_len;
const unsigned int bit = (block % GFS2_NBBY) * GFS2_BIT_SIZE;
- byte1 = buf1 + offset + (block / GFS2_NBBY);
- end = buf1 + offset + buflen;
+ byte1 = bi->bi_bh->b_data + bi->bi_offset + (block / GFS2_NBBY);
+ end = bi->bi_bh->b_data + bi->bi_offset + buflen;
BUG_ON(byte1 >= end);
@@ -110,7 +110,7 @@ static inline void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buf1,
*byte1 ^= (cur_state ^ new_state) << bit;
if (buf2) {
- byte2 = buf2 + offset + (block / GFS2_NBBY);
+ byte2 = buf2 + bi->bi_offset + (block / GFS2_NBBY);
cur_state = (*byte2 >> bit) & GFS2_BIT_MASK;
*byte2 ^= (cur_state ^ new_state) << bit;
}
@@ -118,6 +118,7 @@ static inline void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buf1,
/**
* gfs2_testbit - test a bit in the bitmaps
+ * @rgd: the resource group descriptor
* @buffer: the buffer that holds the bitmaps
* @buflen: the length (in bytes) of the buffer
* @block: the block to read
@@ -179,7 +180,7 @@ static inline u64 gfs2_bit_search(const __le64 *ptr, u64 mask, u8 state)
/**
* gfs2_bitfit - Search an rgrp's bitmap buffer to find a bit-pair representing
* a block in a given allocation state.
- * @buffer: the buffer that holds the bitmaps
+ * @buf: the buffer that holds the bitmaps
* @len: the length (in bytes) of the buffer
* @goal: start search at this block's bit-pair (within @buffer)
* @state: GFS2_BLKST_XXX the state of the block we're looking for.
@@ -231,6 +232,7 @@ static u32 gfs2_bitfit(const u8 *buf, const unsigned int len,
/**
* gfs2_bitcount - count the number of bits in a certain state
+ * @rgd: the resource group descriptor
* @buffer: the buffer that holds the bitmaps
* @buflen: the length (in bytes) of the buffer
* @state: the state of the block we're looking for
@@ -264,7 +266,6 @@ static u32 gfs2_bitcount(struct gfs2_rgrpd *rgd, const u8 *buffer,
/**
* gfs2_rgrp_verify - Verify that a resource group is consistent
- * @sdp: the filesystem
* @rgd: the rgrp
*
*/
@@ -322,7 +323,8 @@ static inline int rgrp_contains_block(struct gfs2_rgrpd *rgd, u64 block)
/**
* gfs2_blk2rgrpd - Find resource group for a given data/meta block number
* @sdp: The GFS2 superblock
- * @n: The data block number
+ * @blk: The data block number
+ * @exact: True if this needs to be an exact match
*
* Returns: The resource group, or NULL if not found
*/
@@ -380,7 +382,7 @@ struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp)
/**
* gfs2_rgrpd_get_next - get the next RG
- * @rgd: A RG
+ * @rgd: the resource group descriptor
*
* Returns: The next rgrp
*/
@@ -529,6 +531,7 @@ static int compute_bitstructs(struct gfs2_rgrpd *rgd)
/**
* gfs2_ri_total - Total up the file system space, according to the rindex.
+ * @sdp: the filesystem
*
*/
u64 gfs2_ri_total(struct gfs2_sbd *sdp)
@@ -537,16 +540,14 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp)
struct inode *inode = sdp->sd_rindex;
struct gfs2_inode *ip = GFS2_I(inode);
char buf[sizeof(struct gfs2_rindex)];
- struct file_ra_state ra_state;
int error, rgrps;
- file_ra_state_init(&ra_state, inode->i_mapping);
for (rgrps = 0;; rgrps++) {
loff_t pos = rgrps * sizeof(struct gfs2_rindex);
if (pos + sizeof(struct gfs2_rindex) > i_size_read(inode))
break;
- error = gfs2_internal_read(ip, &ra_state, buf, &pos,
+ error = gfs2_internal_read(ip, buf, &pos,
sizeof(struct gfs2_rindex));
if (error != sizeof(struct gfs2_rindex))
break;
@@ -582,13 +583,12 @@ static int rgd_insert(struct gfs2_rgrpd *rgd)
/**
* read_rindex_entry - Pull in a new resource index entry from the disk
- * @gl: The glock covering the rindex inode
+ * @ip: Pointer to the rindex inode
*
* Returns: 0 on success, > 0 on EOF, error code otherwise
*/
-static int read_rindex_entry(struct gfs2_inode *ip,
- struct file_ra_state *ra_state)
+static int read_rindex_entry(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
loff_t pos = sdp->sd_rgrps * sizeof(struct gfs2_rindex);
@@ -599,7 +599,7 @@ static int read_rindex_entry(struct gfs2_inode *ip,
if (pos >= i_size_read(&ip->i_inode))
return 1;
- error = gfs2_internal_read(ip, ra_state, (char *)&buf, &pos,
+ error = gfs2_internal_read(ip, (char *)&buf, &pos,
sizeof(struct gfs2_rindex));
if (error != sizeof(struct gfs2_rindex))
@@ -655,13 +655,10 @@ fail:
static int gfs2_ri_update(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct inode *inode = &ip->i_inode;
- struct file_ra_state ra_state;
int error;
- file_ra_state_init(&ra_state, inode->i_mapping);
do {
- error = read_rindex_entry(ip, &ra_state);
+ error = read_rindex_entry(ip);
} while (error == 0);
if (error < 0)
@@ -741,7 +738,7 @@ static void gfs2_rgrp_out(struct gfs2_rgrpd *rgd, void *buf)
/**
* gfs2_rgrp_go_lock - Read in a RG's header and bitmaps
- * @rgd: the struct gfs2_rgrpd describing the RG to read in
+ * @gh: The glock holder for the resource group
*
* Read in all of a Resource Group's header and bitmap blocks.
* Caller must eventually call gfs2_rgrp_relse() to free the bitmaps.
@@ -801,7 +798,7 @@ fail:
/**
* gfs2_rgrp_go_unlock - Release RG bitmaps read in with gfs2_rgrp_bh_get()
- * @rgd: the struct gfs2_rgrpd describing the RG to read in
+ * @gh: The glock holder for the resource group
*
*/
@@ -1002,11 +999,13 @@ struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip)
* Returns: the struct gfs2_qadata
*/
-static struct gfs2_blkreserv *gfs2_blkrsv_get(struct gfs2_inode *ip)
+static int gfs2_blkrsv_get(struct gfs2_inode *ip)
{
BUG_ON(ip->i_res != NULL);
- ip->i_res = kzalloc(sizeof(struct gfs2_blkreserv), GFP_NOFS);
- return ip->i_res;
+ ip->i_res = kmem_cache_zalloc(gfs2_rsrv_cachep, GFP_NOFS);
+ if (!ip->i_res)
+ return -ENOMEM;
+ return 0;
}
/**
@@ -1038,6 +1037,8 @@ static inline u32 gfs2_bi2rgd_blk(struct gfs2_bitmap *bi, u32 blk)
/**
* try_rgrp_unlink - Look for any unlinked, allocated, but unused inodes
* @rgd: The rgrp
+ * @last_unlinked: block address of the last dinode we unlinked
+ * @skip: block address we should explicitly not unlink
*
* Returns: 0 if no error
* The inode, if one has been found, in inode.
@@ -1102,7 +1103,7 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip
/**
* get_local_rgrp - Choose and lock a rgrp for allocation
* @ip: the inode to reserve space for
- * @rgp: the chosen and locked rgrp
+ * @last_unlinked: the last unlinked block
*
* Try to acquire rgrp in way which avoids contending with others.
*
@@ -1164,13 +1165,14 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
static void gfs2_blkrsv_put(struct gfs2_inode *ip)
{
BUG_ON(ip->i_res == NULL);
- kfree(ip->i_res);
+ kmem_cache_free(gfs2_rsrv_cachep, ip->i_res);
ip->i_res = NULL;
}
/**
* gfs2_inplace_reserve - Reserve space in the filesystem
* @ip: the inode to reserve space for
+ * @requested: the number of blocks to be reserved
*
* Returns: errno
*/
@@ -1179,14 +1181,15 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_blkreserv *rs;
- int error = 0;
+ int error;
u64 last_unlinked = NO_BLOCK;
int tries = 0;
- rs = gfs2_blkrsv_get(ip);
- if (!rs)
- return -ENOMEM;
+ error = gfs2_blkrsv_get(ip);
+ if (error)
+ return error;
+ rs = ip->i_res;
rs->rs_requested = requested;
if (gfs2_assert_warn(sdp, requested)) {
error = -EINVAL;
@@ -1268,7 +1271,6 @@ static unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
* @rgd: the resource group descriptor
* @goal: the goal block within the RG (start here to search for avail block)
* @state: GFS2_BLKST_XXX the before-allocation state to find
- * @dinode: TRUE if the first block we allocate is for a dinode
* @rbi: address of the pointer to the bitmap containing the block found
*
* Walk rgrp's bitmap to find bits that represent a block in @state.
@@ -1282,13 +1284,12 @@ static unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
* Returns: the block number found relative to the bitmap rbi
*/
-static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
- unsigned char state,
+static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal, unsigned char state,
struct gfs2_bitmap **rbi)
{
struct gfs2_bitmap *bi = NULL;
const u32 length = rgd->rd_length;
- u32 blk = BFITNOENT;
+ u32 biblk = BFITNOENT;
unsigned int buf, x;
const u8 *buffer = NULL;
@@ -1325,8 +1326,8 @@ do_search:
if (state != GFS2_BLKST_UNLINKED && bi->bi_clone)
buffer = bi->bi_clone + bi->bi_offset;
- blk = gfs2_bitfit(buffer, bi->bi_len, goal, state);
- if (blk != BFITNOENT)
+ biblk = gfs2_bitfit(buffer, bi->bi_len, goal, state);
+ if (biblk != BFITNOENT)
break;
if ((goal == 0) && (state == GFS2_BLKST_FREE))
@@ -1339,10 +1340,10 @@ skip:
goal = 0;
}
- if (blk != BFITNOENT)
+ if (biblk != BFITNOENT)
*rbi = bi;
- return blk;
+ return biblk;
}
/**
@@ -1367,8 +1368,8 @@ static u64 gfs2_alloc_extent(struct gfs2_rgrpd *rgd, struct gfs2_bitmap *bi,
*n = 0;
buffer = bi->bi_bh->b_data + bi->bi_offset;
gfs2_trans_add_bh(rgd->rd_gl, bi->bi_bh, 1);
- gfs2_setbit(rgd, bi->bi_bh->b_data, bi->bi_clone, bi->bi_offset,
- bi, blk, dinode ? GFS2_BLKST_DINODE : GFS2_BLKST_USED);
+ gfs2_setbit(rgd, bi->bi_clone, bi, blk,
+ dinode ? GFS2_BLKST_DINODE : GFS2_BLKST_USED);
(*n)++;
goal = blk;
while (*n < elen) {
@@ -1378,8 +1379,7 @@ static u64 gfs2_alloc_extent(struct gfs2_rgrpd *rgd, struct gfs2_bitmap *bi,
if (gfs2_testbit(rgd, buffer, bi->bi_len, goal) !=
GFS2_BLKST_FREE)
break;
- gfs2_setbit(rgd, bi->bi_bh->b_data, bi->bi_clone, bi->bi_offset,
- bi, goal, GFS2_BLKST_USED);
+ gfs2_setbit(rgd, bi->bi_clone, bi, goal, GFS2_BLKST_USED);
(*n)++;
}
blk = gfs2_bi2rgd_blk(bi, blk);
@@ -1436,8 +1436,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart,
bi->bi_len);
}
gfs2_trans_add_bh(rgd->rd_gl, bi->bi_bh, 1);
- gfs2_setbit(rgd, bi->bi_bh->b_data, NULL, bi->bi_offset,
- bi, buf_blk, new_state);
+ gfs2_setbit(rgd, NULL, bi, buf_blk, new_state);
}
return rgd;
@@ -1557,7 +1556,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks,
ip->i_inode.i_gid);
rgd->rd_free_clone -= *nblocks;
- trace_gfs2_block_alloc(ip, block, *nblocks,
+ trace_gfs2_block_alloc(ip, rgd, block, *nblocks,
dinode ? GFS2_BLKST_DINODE : GFS2_BLKST_USED);
*bn = block;
return 0;
@@ -1584,7 +1583,7 @@ void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta)
rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE);
if (!rgd)
return;
- trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE);
+ trace_gfs2_block_alloc(ip, rgd, bstart, blen, GFS2_BLKST_FREE);
rgd->rd_free += blen;
rgd->rd_flags &= ~GFS2_RGF_TRIMMED;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
@@ -1622,7 +1621,7 @@ void gfs2_unlink_di(struct inode *inode)
rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED);
if (!rgd)
return;
- trace_gfs2_block_alloc(ip, blkno, 1, GFS2_BLKST_UNLINKED);
+ trace_gfs2_block_alloc(ip, rgd, blkno, 1, GFS2_BLKST_UNLINKED);
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
}
@@ -1652,7 +1651,7 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip)
{
gfs2_free_uninit_di(rgd, ip->i_no_addr);
- trace_gfs2_block_alloc(ip, ip->i_no_addr, 1, GFS2_BLKST_FREE);
+ trace_gfs2_block_alloc(ip, rgd, ip->i_no_addr, 1, GFS2_BLKST_FREE);
gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_meta_wipe(ip, ip->i_no_addr, 1);
}
@@ -1752,7 +1751,6 @@ void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist,
* and initialize an array of glock holders for them
* @rlist: the list of resource groups
* @state: the lock state to acquire the RG lock in
- * @flags: the modifier flags for the holder structures
*
* FIXME: Don't use NOFAIL
*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-21 03:49:48 +0000