From: Ilya Dryomov <idryomov@gmail.com>
To: Jeff Layton <jlayton@kernel.org>
Cc: David Howells <dhowells@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Ceph Development <ceph-devel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
"Yan, Zheng" <zyan@redhat.com>
Subject: Re: [PATCH v3] ceph: Convert ceph to use the new mount API
Date: Fri, 6 Sep 2019 17:00:09 +0200 [thread overview]
Message-ID: <CAOi1vP-3aHy8yerpMkmA80WF1=e4umg_zCt8Dvc+X6V8-Dg+Qw@mail.gmail.com> (raw)
In-Reply-To: <20190906101618.8939-1-jlayton@kernel.org>
On Fri, Sep 6, 2019 at 12:16 PM Jeff Layton <jlayton@kernel.org> wrote:
>
> From: David Howells <dhowells@redhat.com>
>
> Convert the ceph filesystem to the new internal mount API as the old
> one will be obsoleted and removed. This allows greater flexibility in
> communication of mount parameters between userspace, the VFS and the
> filesystem.
>
> See Documentation/filesystems/mount_api.txt for more information.
>
> Signed-off-by: David Howells <dhowells@redhat.com>
> Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
> cc: Ilya Dryomov <idryomov@gmail.com>
> cc: Sage Weil <sage@redhat.com>
> cc: ceph-devel@vger.kernel.org
> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
> Signed-off-by: Jeff Layton <jlayton@kernel.org>
> ---
> drivers/block/rbd.c | 344 +++++++++---------
> fs/ceph/cache.c | 10 +-
> fs/ceph/cache.h | 5 +-
> fs/ceph/super.c | 687 +++++++++++++++++------------------
> fs/ceph/super.h | 1 -
> include/linux/ceph/libceph.h | 17 +-
> net/ceph/ceph_common.c | 410 +++++++++------------
> 7 files changed, 718 insertions(+), 756 deletions(-)
>
> v3: fix string handling bugs for key-only rbd options
>
> v2: fix several string parsing bugs in rbd_add_parse_args and rbd_parse_monolithic
> prefix rbd log message with "rbd:"
> drop unneeded #undef from ceph_debug.h
> drop unrelated comment fixes in fs/fs_*.c
> rebase onto current ceph/testing branch
>
> Ilya, hopefully third time is the charm. This fixes rbd key-only option
> parsing for me.
Nope, this is still buggy. Attempting to map a non-existing image
seems to be corrupting memory. "sudo rbd map foobar" in a loop quickly
leads to random GP faults.
>
> diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
> index c3df76a862d2..8a7f996e228f 100644
> --- a/drivers/block/rbd.c
> +++ b/drivers/block/rbd.c
> @@ -34,7 +34,7 @@
> #include <linux/ceph/cls_lock_client.h>
> #include <linux/ceph/striper.h>
> #include <linux/ceph/decode.h>
> -#include <linux/parser.h>
> +#include <linux/fs_parser.h>
> #include <linux/bsearch.h>
>
> #include <linux/kernel.h>
> @@ -823,34 +823,12 @@ enum {
> Opt_queue_depth,
> Opt_alloc_size,
> Opt_lock_timeout,
> - Opt_last_int,
> - /* int args above */
> Opt_pool_ns,
> - Opt_last_string,
> - /* string args above */
> Opt_read_only,
> Opt_read_write,
> Opt_lock_on_read,
> Opt_exclusive,
> Opt_notrim,
> - Opt_err
> -};
> -
> -static match_table_t rbd_opts_tokens = {
> - {Opt_queue_depth, "queue_depth=%d"},
> - {Opt_alloc_size, "alloc_size=%d"},
> - {Opt_lock_timeout, "lock_timeout=%d"},
> - /* int args above */
> - {Opt_pool_ns, "_pool_ns=%s"},
> - /* string args above */
> - {Opt_read_only, "read_only"},
> - {Opt_read_only, "ro"}, /* Alternate spelling */
> - {Opt_read_write, "read_write"},
> - {Opt_read_write, "rw"}, /* Alternate spelling */
> - {Opt_lock_on_read, "lock_on_read"},
> - {Opt_exclusive, "exclusive"},
> - {Opt_notrim, "notrim"},
> - {Opt_err, NULL}
> };
>
> struct rbd_options {
> @@ -871,85 +849,86 @@ struct rbd_options {
> #define RBD_EXCLUSIVE_DEFAULT false
> #define RBD_TRIM_DEFAULT true
>
> -struct parse_rbd_opts_ctx {
> - struct rbd_spec *spec;
> - struct rbd_options *opts;
> +static const struct fs_parameter_spec rbd_param_specs[] = {
> + fsparam_u32 ("alloc_size", Opt_alloc_size),
> + fsparam_flag ("exclusive", Opt_exclusive),
> + fsparam_flag ("lock_on_read", Opt_lock_on_read),
> + fsparam_u32 ("lock_timeout", Opt_lock_timeout),
> + fsparam_flag ("notrim", Opt_notrim),
> + fsparam_string ("_pool_ns", Opt_pool_ns),
> + fsparam_u32 ("queue_depth", Opt_queue_depth),
> + fsparam_flag ("ro", Opt_read_only),
> + fsparam_flag ("rw", Opt_read_write),
The existing code recognizes both ro and read_only, and both rw and
read_write. The new code only recognizes ro and rw. I don't think
anybody uses read_only and read_write, but they are trivial to keep
and certainly should not have been dropped without a note.
I'm still getting errno = 519 on an unknown option (random junk or
read_only/read_write because they are no longer known). The existing
code returns EINVAL for this case.
> + {}
> +};
> +
> +static const struct fs_parameter_description rbd_parameters = {
> + .name = "rbd",
> + .specs = rbd_param_specs,
> };
>
> -static int parse_rbd_opts_token(char *c, void *private)
> +static int rbd_parse_param(struct ceph_config_context *ctx, struct fs_parameter *param)
> {
> - struct parse_rbd_opts_ctx *pctx = private;
> - substring_t argstr[MAX_OPT_ARGS];
> - int token, intval, ret;
> + struct rbd_options *opts = ctx->rbd_opts;
> + struct rbd_spec *spec = ctx->rbd_spec;
> + struct fs_parse_result result;
> + int ret, opt;
>
> - token = match_token(c, rbd_opts_tokens, argstr);
> - if (token < Opt_last_int) {
> - ret = match_int(&argstr[0], &intval);
> - if (ret < 0) {
> - pr_err("bad option arg (not int) at '%s'\n", c);
> - return ret;
> - }
> - dout("got int token %d val %d\n", token, intval);
> - } else if (token > Opt_last_int && token < Opt_last_string) {
> - dout("got string token %d val %s\n", token, argstr[0].from);
> - } else {
> - dout("got token %d\n", token);
> - }
> + ret = ceph_parse_option(ctx->opt, NULL, param);
> + if (ret != -ENOPARAM)
> + return ret;
>
> - switch (token) {
> + opt = fs_parse(NULL, &rbd_parameters, param, &result);
> + if (opt < 0)
> + return opt;
> +
> + switch (opt) {
> case Opt_queue_depth:
> - if (intval < 1) {
> - pr_err("queue_depth out of range\n");
> - return -EINVAL;
> - }
> - pctx->opts->queue_depth = intval;
> + if (result.uint_32 < 1)
> + goto out_of_range;
> + opts->queue_depth = result.uint_32;
> break;
> case Opt_alloc_size:
> - if (intval < SECTOR_SIZE) {
> - pr_err("alloc_size out of range\n");
> - return -EINVAL;
> - }
> - if (!is_power_of_2(intval)) {
> - pr_err("alloc_size must be a power of 2\n");
> - return -EINVAL;
> - }
> - pctx->opts->alloc_size = intval;
> + if (result.uint_32 < SECTOR_SIZE)
> + goto out_of_range;
> + if (!is_power_of_2(result.uint_32))
> + return invalf(NULL, "alloc_size must be a power of 2\n");
> + opts->alloc_size = result.uint_32;
> break;
> case Opt_lock_timeout:
> /* 0 is "wait forever" (i.e. infinite timeout) */
> - if (intval < 0 || intval > INT_MAX / 1000) {
> - pr_err("lock_timeout out of range\n");
> - return -EINVAL;
> - }
> - pctx->opts->lock_timeout = msecs_to_jiffies(intval * 1000);
> + if (result.uint_32 > INT_MAX / 1000)
> + goto out_of_range;
> + opts->lock_timeout = msecs_to_jiffies(result.uint_32 * 1000);
> break;
> case Opt_pool_ns:
> - kfree(pctx->spec->pool_ns);
> - pctx->spec->pool_ns = match_strdup(argstr);
> - if (!pctx->spec->pool_ns)
> - return -ENOMEM;
> + kfree(spec->pool_ns);
> + spec->pool_ns = param->string;
> + param->string = NULL;
> break;
> case Opt_read_only:
> - pctx->opts->read_only = true;
> + opts->read_only = true;
> break;
> case Opt_read_write:
> - pctx->opts->read_only = false;
> + opts->read_only = false;
> break;
> case Opt_lock_on_read:
> - pctx->opts->lock_on_read = true;
> + opts->lock_on_read = true;
> break;
> case Opt_exclusive:
> - pctx->opts->exclusive = true;
> + opts->exclusive = true;
> break;
> case Opt_notrim:
> - pctx->opts->trim = false;
> + opts->trim = false;
> break;
> default:
> - /* libceph prints "bad option" msg */
> return -EINVAL;
> }
>
> return 0;
> +
> +out_of_range:
> + return invalf(NULL, "rbd: %s out of range", param->key);
> }
>
> static char* obj_op_name(enum obj_operation_type op_type)
> @@ -6438,22 +6417,85 @@ static inline size_t next_token(const char **buf)
> *
> * Note: uses GFP_KERNEL for allocation.
> */
> -static inline char *dup_token(const char **buf, size_t *lenp)
> +static inline char *dup_token(const char **buf)
> {
> char *dup;
> size_t len;
>
> len = next_token(buf);
> - dup = kmemdup(*buf, len + 1, GFP_KERNEL);
> - if (!dup)
> - return NULL;
> - *(dup + len) = '\0';
> - *buf += len;
> + dup = kmemdup_nul(*buf, len, GFP_KERNEL);
> + if (dup)
> + *buf += len;
> + return dup;
> +}
> +
> +/*
> + * Parse the parameter string.
> + */
> +static int rbd_parse_monolithic(struct ceph_config_context *ctx, size_t len,
> + const char *data)
> +{
> + const char *sep, *key, *eq, *value;
> + char key_buf[32];
> + size_t size, klen;
> + int ret = 0;
>
> - if (lenp)
> - *lenp = len;
> + struct fs_parameter param = {
> + .key = key_buf,
> + .type = fs_value_is_string,
> + };
>
> - return dup;
> + do {
> + key = data;
> + sep = strchr(data, ',');
> + if (sep) {
> + data = sep + 1;
> + size = sep - key;
> + len -= size + 1;
> + } else {
> + data = NULL;
> + size = len;
> + len -= size;
> + }
> +
> + if (!size)
> + continue;
> +
> + eq = memchr(key, '=', size);
> + if (eq) {
> + klen = eq - key;
> + if (klen == 0)
> + return invalf(NULL, "Invalid option \"\"");
> + value = eq + 1;
> + param.size = size - klen - 1;
> + } else {
> + klen = size;
> + value = NULL;
> + param.size = 0;
> + }
> +
> + if (klen >= sizeof(key_buf))
> + return invalf(NULL, "Unknown option %*.*s",
> + (int)klen, (int)klen, key);
> + memcpy(key_buf, key, klen);
> + key_buf[klen] = 0;
> +
> + if (param.size > 0) {
> + param.string = kmemdup_nul(value, param.size,
> + GFP_KERNEL);
> + if (!param.string)
> + return -ENOMEM;
> + } else {
> + param.string = NULL;
> + }
> +
> + ret = rbd_parse_param(ctx, ¶m);
> + kfree(param.string);
> + if (ret < 0)
> + break;
> + } while (data);
> +
> + return ret;
> }
>
> /*
> @@ -6497,18 +6539,11 @@ static inline char *dup_token(const char **buf, size_t *lenp)
> * created. The image head is used if no snapshot id is
> * provided. Snapshot mappings are always read-only.
> */
> -static int rbd_add_parse_args(const char *buf,
> - struct ceph_options **ceph_opts,
> - struct rbd_options **opts,
> - struct rbd_spec **rbd_spec)
> +static int rbd_add_parse_args(const char *buf, struct ceph_config_context *ctx)
> {
> - size_t len;
> - char *options;
> - const char *mon_addrs;
> + const char *options, *mon_addrs;
> + size_t len, options_len, mon_addrs_size;
> char *snap_name;
> - size_t mon_addrs_size;
> - struct parse_rbd_opts_ctx pctx = { 0 };
> - struct ceph_options *copts;
> int ret;
>
> /* The first four tokens are required */
> @@ -6519,36 +6554,35 @@ static int rbd_add_parse_args(const char *buf,
> return -EINVAL;
> }
> mon_addrs = buf;
> - mon_addrs_size = len + 1;
> + mon_addrs_size = len;
> buf += len;
>
> - ret = -EINVAL;
> - options = dup_token(&buf, NULL);
> - if (!options)
> - return -ENOMEM;
> - if (!*options) {
> + options_len = next_token(&buf);
> + if (options_len == 0) {
> rbd_warn(NULL, "no options provided");
> - goto out_err;
> + return -EINVAL;
> }
> + options = buf;
> + buf += options_len;
>
> - pctx.spec = rbd_spec_alloc();
> - if (!pctx.spec)
> - goto out_mem;
> + ctx->rbd_spec = rbd_spec_alloc();
> + if (!ctx->rbd_spec)
> + return -ENOMEM;
>
> - pctx.spec->pool_name = dup_token(&buf, NULL);
> - if (!pctx.spec->pool_name)
> - goto out_mem;
> - if (!*pctx.spec->pool_name) {
> + ctx->rbd_spec->pool_name = dup_token(&buf);
> + if (!ctx->rbd_spec->pool_name)
> + return -ENOMEM;
> + if (!*ctx->rbd_spec->pool_name) {
> rbd_warn(NULL, "no pool name provided");
> - goto out_err;
> + return -EINVAL;
> }
>
> - pctx.spec->image_name = dup_token(&buf, NULL);
> - if (!pctx.spec->image_name)
> - goto out_mem;
> - if (!*pctx.spec->image_name) {
> + ctx->rbd_spec->image_name = dup_token(&buf);
> + if (!ctx->rbd_spec->image_name)
> + return -ENOMEM;
> + if (!*ctx->rbd_spec->image_name) {
> rbd_warn(NULL, "no image name provided");
> - goto out_err;
> + return -EINVAL;
> }
>
> /*
> @@ -6560,51 +6594,37 @@ static int rbd_add_parse_args(const char *buf,
> buf = RBD_SNAP_HEAD_NAME; /* No snapshot supplied */
> len = sizeof (RBD_SNAP_HEAD_NAME) - 1;
> } else if (len > RBD_MAX_SNAP_NAME_LEN) {
> - ret = -ENAMETOOLONG;
> - goto out_err;
> + return -ENAMETOOLONG;
> }
> - snap_name = kmemdup(buf, len + 1, GFP_KERNEL);
> +
> + snap_name = kmemdup_nul(buf, len, GFP_KERNEL);
> if (!snap_name)
> - goto out_mem;
> - *(snap_name + len) = '\0';
> - pctx.spec->snap_name = snap_name;
> + return -ENOMEM;
> + ctx->rbd_spec->snap_name = snap_name;
>
> /* Initialize all rbd options to the defaults */
>
> - pctx.opts = kzalloc(sizeof(*pctx.opts), GFP_KERNEL);
> - if (!pctx.opts)
> - goto out_mem;
> -
> - pctx.opts->read_only = RBD_READ_ONLY_DEFAULT;
> - pctx.opts->queue_depth = RBD_QUEUE_DEPTH_DEFAULT;
> - pctx.opts->alloc_size = RBD_ALLOC_SIZE_DEFAULT;
> - pctx.opts->lock_timeout = RBD_LOCK_TIMEOUT_DEFAULT;
> - pctx.opts->lock_on_read = RBD_LOCK_ON_READ_DEFAULT;
> - pctx.opts->exclusive = RBD_EXCLUSIVE_DEFAULT;
> - pctx.opts->trim = RBD_TRIM_DEFAULT;
> -
> - copts = ceph_parse_options(options, mon_addrs,
> - mon_addrs + mon_addrs_size - 1,
> - parse_rbd_opts_token, &pctx);
> - if (IS_ERR(copts)) {
> - ret = PTR_ERR(copts);
> - goto out_err;
> - }
> - kfree(options);
> + ctx->rbd_opts = kzalloc(sizeof(*ctx->rbd_opts), GFP_KERNEL);
> + if (!ctx->rbd_opts)
> + return -ENOMEM;
>
> - *ceph_opts = copts;
> - *opts = pctx.opts;
> - *rbd_spec = pctx.spec;
> + ctx->rbd_opts->read_only = RBD_READ_ONLY_DEFAULT;
> + ctx->rbd_opts->queue_depth = RBD_QUEUE_DEPTH_DEFAULT;
> + ctx->rbd_opts->alloc_size = RBD_ALLOC_SIZE_DEFAULT;
> + ctx->rbd_opts->lock_timeout = RBD_LOCK_TIMEOUT_DEFAULT;
> + ctx->rbd_opts->lock_on_read = RBD_LOCK_ON_READ_DEFAULT;
> + ctx->rbd_opts->exclusive = RBD_EXCLUSIVE_DEFAULT;
> + ctx->rbd_opts->trim = RBD_TRIM_DEFAULT;
>
> - return 0;
> -out_mem:
> - ret = -ENOMEM;
> -out_err:
> - kfree(pctx.opts);
> - rbd_spec_put(pctx.spec);
> - kfree(options);
> + ctx->opt = ceph_alloc_options();
> + if (!ctx->opt)
> + return -ENOMEM;
>
> - return ret;
> + ret = ceph_parse_server_specs(ctx->opt, NULL, mon_addrs, mon_addrs_size);
> + if (ret < 0)
> + return ret;
> +
> + return rbd_parse_monolithic(ctx, options_len, options);
> }
>
> static void rbd_dev_image_unlock(struct rbd_device *rbd_dev)
> @@ -7037,10 +7057,8 @@ static ssize_t do_rbd_add(struct bus_type *bus,
> const char *buf,
> size_t count)
> {
> + struct ceph_config_context ctx = {};
> struct rbd_device *rbd_dev = NULL;
> - struct ceph_options *ceph_opts = NULL;
> - struct rbd_options *rbd_opts = NULL;
> - struct rbd_spec *spec = NULL;
> struct rbd_client *rbdc;
> int rc;
>
> @@ -7048,33 +7066,34 @@ static ssize_t do_rbd_add(struct bus_type *bus,
> return -ENODEV;
>
> /* parse add command */
> - rc = rbd_add_parse_args(buf, &ceph_opts, &rbd_opts, &spec);
> + rc = rbd_add_parse_args(buf, &ctx);
> if (rc < 0)
> goto out;
>
> - rbdc = rbd_get_client(ceph_opts);
> + rbdc = rbd_get_client(ctx.opt);
> if (IS_ERR(rbdc)) {
> rc = PTR_ERR(rbdc);
> goto err_out_args;
> }
>
> /* pick the pool */
> - rc = ceph_pg_poolid_by_name(rbdc->client->osdc.osdmap, spec->pool_name);
> + rc = ceph_pg_poolid_by_name(rbdc->client->osdc.osdmap,
> + ctx.rbd_spec->pool_name);
> if (rc < 0) {
> if (rc == -ENOENT)
> - pr_info("pool %s does not exist\n", spec->pool_name);
> + pr_info("pool %s does not exist\n", ctx.rbd_spec->pool_name);
> goto err_out_client;
> }
> - spec->pool_id = (u64)rc;
> + ctx.rbd_spec->pool_id = (u64)rc;
>
> - rbd_dev = rbd_dev_create(rbdc, spec, rbd_opts);
> + rbd_dev = rbd_dev_create(rbdc, ctx.rbd_spec, ctx.rbd_opts);
> if (!rbd_dev) {
> rc = -ENOMEM;
> goto err_out_client;
> }
> rbdc = NULL; /* rbd_dev now owns this */
> - spec = NULL; /* rbd_dev now owns this */
> - rbd_opts = NULL; /* rbd_dev now owns this */
> + ctx.rbd_spec = NULL; /* rbd_dev now owns this */
> + ctx.rbd_opts = NULL; /* rbd_dev now owns this */
>
> rbd_dev->config_info = kstrdup(buf, GFP_KERNEL);
> if (!rbd_dev->config_info) {
> @@ -7139,8 +7158,9 @@ static ssize_t do_rbd_add(struct bus_type *bus,
> err_out_client:
> rbd_put_client(rbdc);
> err_out_args:
> - rbd_spec_put(spec);
> - kfree(rbd_opts);
> + rbd_spec_put(ctx.rbd_spec);
> + kfree(ctx.rbd_opts);
> + ceph_destroy_options(ctx.opt);
> goto out;
> }
>
> diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c
> index b2ec29eeb4c4..20ce51d16f60 100644
> --- a/fs/ceph/cache.c
> +++ b/fs/ceph/cache.c
> @@ -7,7 +7,7 @@
> */
>
> #include <linux/ceph/ceph_debug.h>
> -
> +#include <linux/fs_context.h>
> #include "super.h"
> #include "cache.h"
>
> @@ -49,7 +49,7 @@ void ceph_fscache_unregister(void)
> fscache_unregister_netfs(&ceph_cache_netfs);
> }
>
> -int ceph_fscache_register_fs(struct ceph_fs_client* fsc)
> +int ceph_fscache_register_fs(struct fs_context *fc, struct ceph_fs_client* fsc)
> {
> const struct ceph_fsid *fsid = &fsc->client->fsid;
> const char *fscache_uniq = fsc->mount_options->fscache_uniq;
> @@ -66,8 +66,8 @@ int ceph_fscache_register_fs(struct ceph_fs_client* fsc)
> if (uniq_len && memcmp(ent->uniquifier, fscache_uniq, uniq_len))
> continue;
>
> - pr_err("fscache cookie already registered for fsid %pU\n", fsid);
> - pr_err(" use fsc=%%s mount option to specify a uniquifier\n");
> + errorf(fc, "fscache cookie already registered for fsid %pU\n", fsid);
> + errorf(fc, " use fsc=%%s mount option to specify a uniquifier\n");
> err = -EBUSY;
> goto out_unlock;
> }
> @@ -95,7 +95,7 @@ int ceph_fscache_register_fs(struct ceph_fs_client* fsc)
> list_add_tail(&ent->list, &ceph_fscache_list);
> } else {
> kfree(ent);
> - pr_err("unable to register fscache cookie for fsid %pU\n",
> + errorf(fc, "unable to register fscache cookie for fsid %pU\n",
> fsid);
> /* all other fs ignore this error */
> }
> diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h
> index e486fac3434d..f72328fd357b 100644
> --- a/fs/ceph/cache.h
> +++ b/fs/ceph/cache.h
> @@ -16,7 +16,7 @@ extern struct fscache_netfs ceph_cache_netfs;
> int ceph_fscache_register(void);
> void ceph_fscache_unregister(void);
>
> -int ceph_fscache_register_fs(struct ceph_fs_client* fsc);
> +int ceph_fscache_register_fs(struct fs_context *fc, struct ceph_fs_client* fsc);
> void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc);
>
> void ceph_fscache_register_inode_cookie(struct inode *inode);
> @@ -88,7 +88,8 @@ static inline void ceph_fscache_unregister(void)
> {
> }
>
> -static inline int ceph_fscache_register_fs(struct ceph_fs_client* fsc)
> +static inline int ceph_fscache_register_fs(struct fs_context *fc,
> + struct ceph_fs_client *fsc)
> {
> return 0;
> }
> diff --git a/fs/ceph/super.c b/fs/ceph/super.c
> index 03b63b1cd32c..5ccaec686eda 100644
> --- a/fs/ceph/super.c
> +++ b/fs/ceph/super.c
> @@ -9,7 +9,8 @@
> #include <linux/in6.h>
> #include <linux/module.h>
> #include <linux/mount.h>
> -#include <linux/parser.h>
> +#include <linux/fs_context.h>
> +#include <linux/fs_parser.h>
> #include <linux/sched.h>
> #include <linux/seq_file.h>
> #include <linux/slab.h>
> @@ -138,276 +139,305 @@ enum {
> Opt_readdir_max_entries,
> Opt_readdir_max_bytes,
> Opt_congestion_kb,
> - Opt_last_int,
> - /* int args above */
> Opt_snapdirname,
> Opt_mds_namespace,
> - Opt_fscache_uniq,
> Opt_recover_session,
> - Opt_last_string,
> - /* string args above */
> Opt_dirstat,
> - Opt_nodirstat,
> Opt_rbytes,
> - Opt_norbytes,
> Opt_asyncreaddir,
> - Opt_noasyncreaddir,
> Opt_dcache,
> - Opt_nodcache,
> Opt_ino32,
> - Opt_noino32,
> Opt_fscache,
> - Opt_nofscache,
> Opt_poolperm,
> - Opt_nopoolperm,
> Opt_require_active_mds,
> - Opt_norequire_active_mds,
> -#ifdef CONFIG_CEPH_FS_POSIX_ACL
> Opt_acl,
> -#endif
> - Opt_noacl,
> Opt_quotadf,
> - Opt_noquotadf,
> Opt_copyfrom,
> - Opt_nocopyfrom,
> + Opt_source,
> };
>
> -static match_table_t fsopt_tokens = {
> - {Opt_wsize, "wsize=%d"},
> - {Opt_rsize, "rsize=%d"},
> - {Opt_rasize, "rasize=%d"},
> - {Opt_caps_wanted_delay_min, "caps_wanted_delay_min=%d"},
> - {Opt_caps_wanted_delay_max, "caps_wanted_delay_max=%d"},
> - {Opt_caps_max, "caps_max=%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"},
> - {Opt_mds_namespace, "mds_namespace=%s"},
> - {Opt_recover_session, "recover_session=%s"},
> - {Opt_fscache_uniq, "fsc=%s"},
> - /* string args above */
> - {Opt_dirstat, "dirstat"},
> - {Opt_nodirstat, "nodirstat"},
> - {Opt_rbytes, "rbytes"},
> - {Opt_norbytes, "norbytes"},
> - {Opt_asyncreaddir, "asyncreaddir"},
> - {Opt_noasyncreaddir, "noasyncreaddir"},
> - {Opt_dcache, "dcache"},
> - {Opt_nodcache, "nodcache"},
> - {Opt_ino32, "ino32"},
> - {Opt_noino32, "noino32"},
> - {Opt_fscache, "fsc"},
> - {Opt_nofscache, "nofsc"},
> - {Opt_poolperm, "poolperm"},
> - {Opt_nopoolperm, "nopoolperm"},
> - {Opt_require_active_mds, "require_active_mds"},
> - {Opt_norequire_active_mds, "norequire_active_mds"},
> -#ifdef CONFIG_CEPH_FS_POSIX_ACL
> - {Opt_acl, "acl"},
> -#endif
> - {Opt_noacl, "noacl"},
> - {Opt_quotadf, "quotadf"},
> - {Opt_noquotadf, "noquotadf"},
> - {Opt_copyfrom, "copyfrom"},
> - {Opt_nocopyfrom, "nocopyfrom"},
> - {-1, NULL}
> +enum ceph_recover_session_mode {
> + ceph_recover_session_no,
> + ceph_recover_session_clean
> +};
> +
> +static const struct fs_parameter_enum ceph_param_enums[] = {
> + { Opt_recover_session, "no", ceph_recover_session_no },
> + { Opt_recover_session, "clean", ceph_recover_session_clean },
> + {}
> };
>
> -static int parse_fsopt_token(char *c, void *private)
> +static const struct fs_parameter_spec ceph_param_specs[] = {
> + fsparam_flag_no ("acl", Opt_acl),
> + fsparam_flag_no ("asyncreaddir", Opt_asyncreaddir),
> + fsparam_u32 ("caps_max", Opt_caps_max),
> + fsparam_u32 ("caps_wanted_delay_max", Opt_caps_wanted_delay_max),
> + fsparam_u32 ("caps_wanted_delay_min", Opt_caps_wanted_delay_min),
> + fsparam_s32 ("write_congestion_kb", Opt_congestion_kb),
I wonder why this is s32, while all other integer parameters are now
u32. Anything less than 1024 is invalid here...
> + fsparam_flag_no ("copyfrom", Opt_copyfrom),
> + fsparam_flag_no ("dcache", Opt_dcache),
> + fsparam_flag_no ("dirstat", Opt_dirstat),
> + __fsparam (fs_param_is_string, "fsc", Opt_fscache,
> + fs_param_neg_with_no | fs_param_v_optional),
> + fsparam_flag_no ("ino32", Opt_ino32),
> + fsparam_string ("mds_namespace", Opt_mds_namespace),
> + fsparam_flag_no ("poolperm", Opt_poolperm),
> + fsparam_flag_no ("quotadf", Opt_quotadf),
> + fsparam_u32 ("rasize", Opt_rasize),
> + fsparam_flag_no ("rbytes", Opt_rbytes),
> + fsparam_s32 ("readdir_max_bytes", Opt_readdir_max_bytes),
Ditto, either 0 or >= PAGE_SIZE.
> + fsparam_s32 ("readdir_max_entries", Opt_readdir_max_entries),
Ditto, >= 1.
Thanks,
Ilya
next prev parent reply other threads:[~2019-09-06 15:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-06 10:16 [PATCH v3] ceph: Convert ceph to use the new mount API Jeff Layton
2019-09-06 15:00 ` Ilya Dryomov [this message]
2019-09-06 20:10 ` Jeff Layton
2019-09-07 15:07 ` Al Viro
2019-09-09 10:10 ` Ilya Dryomov
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