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authorDavid Howells <dhowells@redhat.com>2018-10-20 00:57:57 +0100
committerDavid Howells <dhowells@redhat.com>2018-10-24 00:41:07 +0100
commitf51375cd9e1ad75e9e38186aa0d3749ade7d52a5 (patch)
treebe53b880c26a3895507712447741327de49e6ed9 /fs/afs
parent4ac15ea53622272c01954461b4814892b7481b40 (diff)
downloadlinux-f51375cd9e1ad75e9e38186aa0d3749ade7d52a5.tar.bz2
afs: Add a couple of tracepoints to log I/O errors
Add a couple of tracepoints to log the production of I/O errors within the AFS filesystem. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs')
-rw-r--r--fs/afs/cmservice.c10
-rw-r--r--fs/afs/dir.c18
-rw-r--r--fs/afs/internal.h11
-rw-r--r--fs/afs/mntpt.c5
-rw-r--r--fs/afs/rxrpc.c2
-rw-r--r--fs/afs/server.c2
-rw-r--r--fs/afs/write.c1
7 files changed, 33 insertions, 16 deletions
diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index 4db62ae8dc1a..186f621f8722 100644
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -260,7 +260,7 @@ static int afs_deliver_cb_callback(struct afs_call *call)
}
if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
- return -EIO;
+ return afs_io_error(call, afs_io_error_cm_reply);
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
@@ -368,7 +368,7 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
}
if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
- return -EIO;
+ return afs_io_error(call, afs_io_error_cm_reply);
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
@@ -409,7 +409,7 @@ static int afs_deliver_cb_probe(struct afs_call *call)
return ret;
if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
- return -EIO;
+ return afs_io_error(call, afs_io_error_cm_reply);
return afs_queue_call_work(call);
}
@@ -490,7 +490,7 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call)
}
if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
- return -EIO;
+ return afs_io_error(call, afs_io_error_cm_reply);
return afs_queue_call_work(call);
}
@@ -573,7 +573,7 @@ static int afs_deliver_cb_tell_me_about_yourself(struct afs_call *call)
return ret;
if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
- return -EIO;
+ return afs_io_error(call, afs_io_error_cm_reply);
return afs_queue_call_work(call);
}
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 855bf2b79fed..78f9754fd03d 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -138,6 +138,7 @@ static bool afs_dir_check_page(struct afs_vnode *dvnode, struct page *page,
ntohs(dbuf->blocks[tmp].hdr.magic));
trace_afs_dir_check_failed(dvnode, off, i_size);
kunmap(page);
+ trace_afs_file_error(dvnode, -EIO, afs_file_error_dir_bad_magic);
goto error;
}
@@ -190,9 +191,11 @@ static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key)
retry:
i_size = i_size_read(&dvnode->vfs_inode);
if (i_size < 2048)
- return ERR_PTR(-EIO);
- if (i_size > 2048 * 1024)
+ return ERR_PTR(afs_bad(dvnode, afs_file_error_dir_small));
+ if (i_size > 2048 * 1024) {
+ trace_afs_file_error(dvnode, -EFBIG, afs_file_error_dir_big);
return ERR_PTR(-EFBIG);
+ }
_enter("%llu", i_size);
@@ -315,7 +318,8 @@ content_has_grown:
/*
* deal with one block in an AFS directory
*/
-static int afs_dir_iterate_block(struct dir_context *ctx,
+static int afs_dir_iterate_block(struct afs_vnode *dvnode,
+ struct dir_context *ctx,
union afs_xdr_dir_block *block,
unsigned blkoff)
{
@@ -365,7 +369,7 @@ static int afs_dir_iterate_block(struct dir_context *ctx,
" (len %u/%zu)",
blkoff / sizeof(union afs_xdr_dir_block),
offset, next, tmp, nlen);
- return -EIO;
+ return afs_bad(dvnode, afs_file_error_dir_over_end);
}
if (!(block->hdr.bitmap[next / 8] &
(1 << (next % 8)))) {
@@ -373,7 +377,7 @@ static int afs_dir_iterate_block(struct dir_context *ctx,
" %u unmarked extension (len %u/%zu)",
blkoff / sizeof(union afs_xdr_dir_block),
offset, next, tmp, nlen);
- return -EIO;
+ return afs_bad(dvnode, afs_file_error_dir_unmarked_ext);
}
_debug("ENT[%zu.%u]: ext %u/%zu",
@@ -442,7 +446,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
*/
page = req->pages[blkoff / PAGE_SIZE];
if (!page) {
- ret = -EIO;
+ ret = afs_bad(dvnode, afs_file_error_dir_missing_page);
break;
}
mark_page_accessed(page);
@@ -455,7 +459,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
do {
dblock = &dbuf->blocks[(blkoff % PAGE_SIZE) /
sizeof(union afs_xdr_dir_block)];
- ret = afs_dir_iterate_block(ctx, dblock, blkoff);
+ ret = afs_dir_iterate_block(dvnode, ctx, dblock, blkoff);
if (ret != 1) {
kunmap(page);
goto out;
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 7e264cb9b4f7..28d08aac515d 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -1257,6 +1257,17 @@ static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc,
}
}
+static inline int afs_io_error(struct afs_call *call, enum afs_io_error where)
+{
+ trace_afs_io_error(call->debug_id, -EIO, where);
+ return -EIO;
+}
+
+static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where)
+{
+ trace_afs_file_error(vnode, -EIO, where);
+ return -EIO;
+}
/*****************************************************************************/
/*
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 99fd13500a97..2e51c6994148 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -130,9 +130,10 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
goto error_no_page;
}
- ret = -EIO;
- if (PageError(page))
+ if (PageError(page)) {
+ ret = afs_bad(AFS_FS_I(d_inode(mntpt)), afs_file_error_mntpt);
goto error;
+ }
buf = kmap_atomic(page);
memcpy(devname, buf, size);
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 947ae3ab389b..e6ab824ab761 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -915,7 +915,7 @@ int afs_extract_data(struct afs_call *call, bool want_more)
break;
case AFS_CALL_COMPLETE:
kdebug("prem complete %d", call->error);
- return -EIO;
+ return afs_io_error(call, afs_io_error_extract);
default:
break;
}
diff --git a/fs/afs/server.c b/fs/afs/server.c
index 6102ea9ee3fb..1a087eb8f2d7 100644
--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -542,7 +542,7 @@ static bool afs_do_probe_fileserver(struct afs_fs_cursor *fc)
case -ETIME:
break;
default:
- fc->ac.error = -EIO;
+ fc->ac.error = afs_io_error(NULL, afs_io_error_fs_probe_fail);
goto error;
}
}
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 19c04caf3c01..fdb9d6024126 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -533,6 +533,7 @@ no_more:
case -ENOENT:
case -ENOMEDIUM:
case -ENXIO:
+ trace_afs_file_error(vnode, ret, afs_file_error_writeback_fail);
afs_kill_pages(mapping, first, last);
mapping_set_error(mapping, ret);
break;