GFS2: Improve error handling in inode allocation
A little while back, block allocation was given some improved
error handling which meant that -EIO was returned in the case
of there being a problem in the resource group data. In addition
a message is printed explaning what went wrong and how to fix it.
This extends that error handling so that it also covers inode
allocation too.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 2f94bd7..f9b4fe8 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -731,7 +731,7 @@
if (error)
goto out_ipreserv;
- *no_addr = gfs2_alloc_di(dip, generation);
+ error = gfs2_alloc_di(dip, no_addr, generation);
gfs2_trans_end(sdp);
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index fba7957..3d0193a 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1459,6 +1459,16 @@
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
@@ -1520,22 +1530,20 @@
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;
@@ -1546,12 +1554,13 @@
blk = rgblk_search(rgd, rgd->rd_last_alloc,
GFS2_BLKST_FREE, GFS2_BLKST_DINODE, &n);
- BUG_ON(blk == BFITNOENT);
+
+ /* 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;
-
gfs2_assert_withdraw(sdp, rgd->rd_free);
rgd->rd_free--;
rgd->rd_dinodes++;
@@ -1568,7 +1577,12 @@
rgd->rd_free_clone--;
spin_unlock(&sdp->sd_rindex_spin);
trace_gfs2_block_alloc(dip, block, 1, GFS2_BLKST_DINODE);
- return block;
+ *bn = block;
+ return 0;
+
+rgrp_error:
+ gfs2_rgrp_error(rgd);
+ return -EIO;
}
/**
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index 1e76ff0..a8dedd7 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -47,7 +47,7 @@
extern unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block);
extern int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n);
-extern u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation);
+extern int gfs2_alloc_di(struct gfs2_inode *ip, u64 *bn, u64 *generation);
extern void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);