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authorLinus Torvalds <torvalds@linux-foundation.org>2017-03-01 16:10:30 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-03-01 16:10:30 -0800
commit8f03cf50bc9443e92d6e54ac4d599357d6cb7cbb (patch)
tree0c38aab3a4c24d06fb05376b651157627bc1669d /net/sunrpc/cache.c
parent25c4e6c3f0c14d1575aa488ff4ca47e045ae51a0 (diff)
parented92d8c137b7794c2c2aa14479298b9885967607 (diff)
downloadlinux-8f03cf50bc9443e92d6e54ac4d599357d6cb7cbb.tar.bz2
Merge tag 'nfs-for-4.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker: "Highlights include: Stable bugfixes: - NFSv4: Fix memory and state leak in _nfs4_open_and_get_state - xprtrdma: Fix Read chunk padding - xprtrdma: Per-connection pad optimization - xprtrdma: Disable pad optimization by default - xprtrdma: Reduce required number of send SGEs - nlm: Ensure callback code also checks that the files match - pNFS/flexfiles: If the layout is invalid, it must be updated before retrying - NFSv4: Fix reboot recovery in copy offload - Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE" - NFSv4: fix getacl head length estimation - NFSv4: fix getacl ERANGE for sum ACL buffer sizes Features: - Add and use dprintk_cont macros - Various cleanups to NFS v4.x to reduce code duplication and complexity - Remove unused cr_magic related code - Improvements to sunrpc "read from buffer" code - Clean up sunrpc timeout code and allow changing TCP timeout parameters - Remove duplicate mw_list management code in xprtrdma - Add generic functions for encoding and decoding xdr streams Bugfixes: - Clean up nfs_show_mountd_netid - Make layoutreturn_ops static and use NULL instead of 0 to fix sparse warnings - Properly handle -ERESTARTSYS in nfs_rename() - Check if register_shrinker() failed during rpcauth_init() - Properly clean up procfs/pipefs entries - Various NFS over RDMA related fixes - Silence unititialized variable warning in sunrpc" * tag 'nfs-for-4.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (64 commits) NFSv4: fix getacl ERANGE for some ACL buffer sizes NFSv4: fix getacl head length estimation Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE" NFSv4: Fix reboot recovery in copy offload pNFS/flexfiles: If the layout is invalid, it must be updated before retrying NFSv4: Clean up owner/group attribute decode SUNRPC: Add a helper function xdr_stream_decode_string_dup() NFSv4: Remove bogus "struct nfs_client" argument from decode_ace() NFSv4: Fix the underestimation of delegation XDR space reservation NFSv4: Replace callback string decode function with a generic NFSv4: Replace the open coded decode_opaque_inline() with the new generic NFSv4: Replace ad-hoc xdr encode/decode helpers with xdr_stream_* generics SUNRPC: Add generic helpers for xdr_stream encode/decode sunrpc: silence uninitialized variable warning nlm: Ensure callback code also checks that the files match sunrpc: Allow xprt->ops->timer method to sleep xprtrdma: Refactor management of mw_list field xprtrdma: Handle stale connection rejection xprtrdma: Properly recover FRWRs with in-flight FASTREG WRs xprtrdma: Shrink send SGEs array ...
Diffstat (limited to 'net/sunrpc/cache.c')
-rw-r--r--net/sunrpc/cache.c68
1 files changed, 22 insertions, 46 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index d8639da06d9c..79d55d949d9a 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -728,7 +728,7 @@ void cache_clean_deferred(void *owner)
/*
* communicate with user-space
*
- * We have a magic /proc file - /proc/sunrpc/<cachename>/channel.
+ * We have a magic /proc file - /proc/net/rpc/<cachename>/channel.
* On read, you get a full request, or block.
* On write, an update request is processed.
* Poll works if anything to read, and always allows write.
@@ -1283,7 +1283,7 @@ EXPORT_SYMBOL_GPL(qword_get);
/*
- * support /proc/sunrpc/cache/$CACHENAME/content
+ * support /proc/net/rpc/$CACHENAME/content
* as a seqfile.
* We call ->cache_show passing NULL for the item to
* get a header, then pass each real item in the cache
@@ -1438,20 +1438,11 @@ static ssize_t read_flush(struct file *file, char __user *buf,
struct cache_detail *cd)
{
char tbuf[22];
- unsigned long p = *ppos;
size_t len;
- snprintf(tbuf, sizeof(tbuf), "%lu\n", convert_to_wallclock(cd->flush_time));
- len = strlen(tbuf);
- if (p >= len)
- return 0;
- len -= p;
- if (len > count)
- len = count;
- if (copy_to_user(buf, (void*)(tbuf+p), len))
- return -EFAULT;
- *ppos += len;
- return len;
+ len = snprintf(tbuf, sizeof(tbuf), "%lu\n",
+ convert_to_wallclock(cd->flush_time));
+ return simple_read_from_buffer(buf, count, ppos, tbuf, len);
}
static ssize_t write_flush(struct file *file, const char __user *buf,
@@ -1611,21 +1602,12 @@ static const struct file_operations cache_flush_operations_procfs = {
.llseek = no_llseek,
};
-static void remove_cache_proc_entries(struct cache_detail *cd, struct net *net)
+static void remove_cache_proc_entries(struct cache_detail *cd)
{
- struct sunrpc_net *sn;
-
- if (cd->u.procfs.proc_ent == NULL)
- return;
- if (cd->u.procfs.flush_ent)
- remove_proc_entry("flush", cd->u.procfs.proc_ent);
- if (cd->u.procfs.channel_ent)
- remove_proc_entry("channel", cd->u.procfs.proc_ent);
- if (cd->u.procfs.content_ent)
- remove_proc_entry("content", cd->u.procfs.proc_ent);
- cd->u.procfs.proc_ent = NULL;
- sn = net_generic(net, sunrpc_net_id);
- remove_proc_entry(cd->name, sn->proc_net_rpc);
+ if (cd->procfs) {
+ proc_remove(cd->procfs);
+ cd->procfs = NULL;
+ }
}
#ifdef CONFIG_PROC_FS
@@ -1635,38 +1617,30 @@ static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)
struct sunrpc_net *sn;
sn = net_generic(net, sunrpc_net_id);
- cd->u.procfs.proc_ent = proc_mkdir(cd->name, sn->proc_net_rpc);
- if (cd->u.procfs.proc_ent == NULL)
+ cd->procfs = proc_mkdir(cd->name, sn->proc_net_rpc);
+ if (cd->procfs == NULL)
goto out_nomem;
- cd->u.procfs.channel_ent = NULL;
- cd->u.procfs.content_ent = NULL;
p = proc_create_data("flush", S_IFREG|S_IRUSR|S_IWUSR,
- cd->u.procfs.proc_ent,
- &cache_flush_operations_procfs, cd);
- cd->u.procfs.flush_ent = p;
+ cd->procfs, &cache_flush_operations_procfs, cd);
if (p == NULL)
goto out_nomem;
if (cd->cache_request || cd->cache_parse) {
p = proc_create_data("channel", S_IFREG|S_IRUSR|S_IWUSR,
- cd->u.procfs.proc_ent,
- &cache_file_operations_procfs, cd);
- cd->u.procfs.channel_ent = p;
+ cd->procfs, &cache_file_operations_procfs, cd);
if (p == NULL)
goto out_nomem;
}
if (cd->cache_show) {
p = proc_create_data("content", S_IFREG|S_IRUSR,
- cd->u.procfs.proc_ent,
- &content_file_operations_procfs, cd);
- cd->u.procfs.content_ent = p;
+ cd->procfs, &content_file_operations_procfs, cd);
if (p == NULL)
goto out_nomem;
}
return 0;
out_nomem:
- remove_cache_proc_entries(cd, net);
+ remove_cache_proc_entries(cd);
return -ENOMEM;
}
#else /* CONFIG_PROC_FS */
@@ -1695,7 +1669,7 @@ EXPORT_SYMBOL_GPL(cache_register_net);
void cache_unregister_net(struct cache_detail *cd, struct net *net)
{
- remove_cache_proc_entries(cd, net);
+ remove_cache_proc_entries(cd);
sunrpc_destroy_cache_detail(cd);
}
EXPORT_SYMBOL_GPL(cache_unregister_net);
@@ -1854,15 +1828,17 @@ int sunrpc_cache_register_pipefs(struct dentry *parent,
struct dentry *dir = rpc_create_cache_dir(parent, name, umode, cd);
if (IS_ERR(dir))
return PTR_ERR(dir);
- cd->u.pipefs.dir = dir;
+ cd->pipefs = dir;
return 0;
}
EXPORT_SYMBOL_GPL(sunrpc_cache_register_pipefs);
void sunrpc_cache_unregister_pipefs(struct cache_detail *cd)
{
- rpc_remove_cache_dir(cd->u.pipefs.dir);
- cd->u.pipefs.dir = NULL;
+ if (cd->pipefs) {
+ rpc_remove_cache_dir(cd->pipefs);
+ cd->pipefs = NULL;
+ }
}
EXPORT_SYMBOL_GPL(sunrpc_cache_unregister_pipefs);