#include "util.h"
#include "log.h"
#include "inode.h"
+#include "trace_gfs2.h"
#define BFITNOENT ((u32)~0)
#define NO_BLOCK ((u64)~0)
* always aligned to a 64 bit boundary.
*
* The size of the buffer is in bytes, but is it assumed that it is
- * always ok to to read a complete multiple of 64 bits at the end
+ * always ok to read a complete multiple of 64 bits at the end
* of the block in case the end is no aligned to a natural boundary.
*
* Return: the block number (bitmap buffer scope) that was found
}
tmp = rgd->rd_data - rgd->rd_free - rgd->rd_dinodes;
- if (count[1] + count[2] != tmp) {
+ if (count[1] != tmp) {
if (gfs2_consist_rgrpd(rgd))
fs_err(sdp, "used data mismatch: %u != %u\n",
count[1], tmp);
return;
}
- if (count[3] != rgd->rd_dinodes) {
+ if (count[2] + count[3] != rgd->rd_dinodes) {
if (gfs2_consist_rgrpd(rgd))
fs_err(sdp, "used metadata mismatch: %u != %u\n",
- count[3], rgd->rd_dinodes);
+ count[2] + count[3], rgd->rd_dinodes);
return;
}
-
- if (count[2] > count[3]) {
- if (gfs2_consist_rgrpd(rgd))
- fs_err(sdp, "unlinked inodes > inodes: %u\n",
- count[2]);
- return;
- }
-
}
static inline int rgrp_contains_block(struct gfs2_rgrpd *rgd, u64 block)
u64 rgrp_count = ip->i_disksize;
int error;
- if (do_div(rgrp_count, sizeof(struct gfs2_rindex))) {
- gfs2_consist_inode(ip);
- return -EIO;
- }
-
+ do_div(rgrp_count, sizeof(struct gfs2_rindex));
clear_rgrpdi(sdp);
file_ra_state_init(&ra_state, inode->i_mapping);
goto start_new_extent;
if ((start + nr_sects) != blk) {
rv = blkdev_issue_discard(bdev, start,
- nr_sects, GFP_NOFS);
+ nr_sects, GFP_NOFS,
+ DISCARD_FL_BARRIER);
if (rv)
goto fail;
nr_sects = 0;
}
}
if (nr_sects) {
- rv = blkdev_issue_discard(bdev, start, nr_sects, GFP_NOFS);
+ rv = blkdev_issue_discard(bdev, start, nr_sects, GFP_NOFS,
+ DISCARD_FL_BARRIER);
if (rv)
goto fail;
}
struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
{
BUG_ON(ip->i_alloc != NULL);
- ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_KERNEL);
+ ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_NOFS);
return ip->i_alloc;
}
* Returns: The inode, if one has been found
*/
-static struct inode *try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked)
+static struct inode *try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked,
+ u64 skip)
{
struct inode *inode;
u32 goal = 0, block;
goal++;
if (*last_unlinked != NO_BLOCK && no_addr <= *last_unlinked)
continue;
+ if (no_addr == skip)
+ continue;
*last_unlinked = no_addr;
inode = gfs2_inode_lookup(rgd->rd_sbd->sd_vfs, DT_UNKNOWN,
no_addr, -1, 1);
if (try_rgrp_fit(rgd, al))
goto out;
if (rgd->rd_flags & GFS2_RDF_CHECK)
- inode = try_rgrp_unlink(rgd, last_unlinked);
+ inode = try_rgrp_unlink(rgd, last_unlinked, ip->i_no_addr);
if (!rg_locked)
gfs2_glock_dq_uninit(&al->al_rgd_gh);
if (inode)
if (try_rgrp_fit(rgd, al))
goto out;
if (rgd->rd_flags & GFS2_RDF_CHECK)
- inode = try_rgrp_unlink(rgd, last_unlinked);
+ inode = try_rgrp_unlink(rgd, last_unlinked, ip->i_no_addr);
if (!rg_locked)
gfs2_glock_dq_uninit(&al->al_rgd_gh);
if (inode)
* Returns: The block type (GFS2_BLKST_*)
*/
-unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
+static unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
{
struct gfs2_bitmap *bi = NULL;
u32 length, rgrp_block, buf_block;
return 0;
}
+static void gfs2_rgrp_error(struct gfs2_rgrpd *rgd)
+{
+ struct gfs2_sbd *sdp = rgd->rd_sbd;
+ fs_warn(sdp, "rgrp %llu has an error, marking it readonly until umount\n",
+ (unsigned long long)rgd->rd_addr);
+ fs_warn(sdp, "umount on all nodes and run fsck.gfs2 to fix the error\n");
+ gfs2_rgrp_dump(NULL, rgd->rd_gl);
+ rgd->rd_flags |= GFS2_RDF_ERROR;
+}
+
/**
* gfs2_alloc_block - Allocate one or more blocks
* @ip: the inode to allocate the block for
spin_lock(&sdp->sd_rindex_spin);
rgd->rd_free_clone -= *n;
spin_unlock(&sdp->sd_rindex_spin);
-
+ trace_gfs2_block_alloc(ip, block, *n, GFS2_BLKST_USED);
*bn = block;
return 0;
rgrp_error:
- fs_warn(sdp, "rgrp %llu has an error, marking it readonly until umount\n",
- (unsigned long long)rgd->rd_addr);
- fs_warn(sdp, "umount on all nodes and run fsck.gfs2 to fix the error\n");
- gfs2_rgrp_dump(NULL, rgd->rd_gl);
- rgd->rd_flags |= GFS2_RDF_ERROR;
+ gfs2_rgrp_error(rgd);
return -EIO;
}
/**
* gfs2_alloc_di - Allocate a dinode
* @dip: the directory that the inode is going in
+ * @bn: the block number which is allocated
+ * @generation: the generation number of the inode
*
- * Returns: the block allocated
+ * Returns: 0 on success or error
*/
-u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
+int gfs2_alloc_di(struct gfs2_inode *dip, u64 *bn, u64 *generation)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_alloc *al = dip->i_alloc;
blk = rgblk_search(rgd, rgd->rd_last_alloc,
GFS2_BLKST_FREE, GFS2_BLKST_DINODE, &n);
- BUG_ON(blk == BFITNOENT);
- rgd->rd_last_alloc = blk;
+ /* Since all blocks are reserved in advance, this shouldn't happen */
+ if (blk == BFITNOENT)
+ goto rgrp_error;
+ rgd->rd_last_alloc = blk;
block = rgd->rd_data0 + blk;
+ if (rgd->rd_free == 0)
+ goto rgrp_error;
- gfs2_assert_withdraw(sdp, rgd->rd_free);
rgd->rd_free--;
rgd->rd_dinodes++;
*generation = rgd->rd_igeneration++;
+ if (*generation == 0)
+ *generation = rgd->rd_igeneration++;
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);
spin_lock(&sdp->sd_rindex_spin);
rgd->rd_free_clone--;
spin_unlock(&sdp->sd_rindex_spin);
+ trace_gfs2_block_alloc(dip, block, 1, GFS2_BLKST_DINODE);
+ *bn = block;
+ return 0;
- return block;
+rgrp_error:
+ gfs2_rgrp_error(rgd);
+ return -EIO;
}
/**
rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE);
if (!rgd)
return;
-
+ trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE);
rgd->rd_free += blen;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE);
if (!rgd)
return;
-
+ trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE);
rgd->rd_free += blen;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED);
if (!rgd)
return;
+ trace_gfs2_block_alloc(ip, 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);
gfs2_trans_add_rg(rgd);
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);
gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_meta_wipe(ip, ip->i_no_addr, 1);
}
/**
+ * gfs2_check_blk_type - Check the type of a block
+ * @sdp: The superblock
+ * @no_addr: The block number to check
+ * @type: The block type we are looking for
+ *
+ * Returns: 0 if the block type matches the expected type
+ * -ESTALE if it doesn't match
+ * or -ve errno if something went wrong while checking
+ */
+
+int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, unsigned int type)
+{
+ struct gfs2_rgrpd *rgd;
+ struct gfs2_holder ri_gh, rgd_gh;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_rindex);
+ int ri_locked = 0;
+ int error;
+
+ if (!gfs2_glock_is_locked_by_me(ip->i_gl)) {
+ error = gfs2_rindex_hold(sdp, &ri_gh);
+ if (error)
+ goto fail;
+ ri_locked = 1;
+ }
+
+ error = -EINVAL;
+ rgd = gfs2_blk2rgrpd(sdp, no_addr);
+ if (!rgd)
+ goto fail_rindex;
+
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_SHARED, 0, &rgd_gh);
+ if (error)
+ goto fail_rindex;
+
+ if (gfs2_get_block_type(rgd, no_addr) != type)
+ error = -ESTALE;
+
+ gfs2_glock_dq_uninit(&rgd_gh);
+fail_rindex:
+ if (ri_locked)
+ gfs2_glock_dq_uninit(&ri_gh);
+fail:
+ return error;
+}
+
+/**
* gfs2_rlist_add - add a RG to a list of RGs
* @sdp: the filesystem
* @rlist: the list of resource groups
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff