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authorSage Weil <sage@newdream.net>2010-05-14 13:06:30 -0700
committerSage Weil <sage@newdream.net>2010-05-17 15:25:41 -0700
commit23804d91f112df09b832cd091b71af4dc2831aa8 (patch)
tree4b77c43b47d58f08ab02220c507dabfc8f6daf7a /fs/ceph/super.c
parent366837706bae00abc2edd75add2579c1be18b2b8 (diff)
downloadop-kernel-dev-23804d91f112df09b832cd091b71af4dc2831aa8.zip
op-kernel-dev-23804d91f112df09b832cd091b71af4dc2831aa8.tar.gz
ceph: specify max_bytes on readdir replies
Specify max bytes in request to bound size of reply. Add associated mount option with default value of 512 KB. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/super.c')
-rw-r--r--fs/ceph/super.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 7f5b20d..bac1389 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -190,6 +190,8 @@ static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt)
args->cap_release_safety);
if (args->max_readdir != CEPH_MAX_READDIR_DEFAULT)
seq_printf(m, ",readdir_max_entries=%d", args->max_readdir);
+ if (args->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT)
+ seq_printf(m, ",readdir_max_bytes=%d", args->max_readdir_bytes);
if (strcmp(args->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT))
seq_printf(m, ",snapdirname=%s", args->snapdir_name);
if (args->name)
@@ -333,6 +335,7 @@ enum {
Opt_caps_wanted_delay_max,
Opt_cap_release_safety,
Opt_readdir_max_entries,
+ Opt_readdir_max_bytes,
Opt_congestion_kb,
Opt_last_int,
/* int args above */
@@ -365,6 +368,7 @@ static match_table_t arg_tokens = {
{Opt_caps_wanted_delay_max, "caps_wanted_delay_max=%d"},
{Opt_cap_release_safety, "cap_release_safety=%d"},
{Opt_readdir_max_entries, "readdir_max_entries=%d"},
+ {Opt_readdir_max_bytes, "readdir_max_bytes=%d"},
{Opt_congestion_kb, "write_congestion_kb=%d"},
/* int args above */
{Opt_snapdirname, "snapdirname=%s"},
@@ -415,6 +419,7 @@ static struct ceph_mount_args *parse_mount_args(int flags, char *options,
args->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
args->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT;
args->max_readdir = CEPH_MAX_READDIR_DEFAULT;
+ args->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT;
args->congestion_kb = default_congestion_kb();
/* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */
@@ -522,6 +527,9 @@ static struct ceph_mount_args *parse_mount_args(int flags, char *options,
case Opt_readdir_max_entries:
args->max_readdir = intval;
break;
+ case Opt_readdir_max_bytes:
+ args->max_readdir_bytes = intval;
+ break;
case Opt_congestion_kb:
args->congestion_kb = intval;
break;
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