return count;
}
+static int osc_rd_cached_mb(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ struct obd_device *dev = data;
+ struct client_obd *cli = &dev->u.cli;
+ int shift = 20 - CFS_PAGE_SHIFT;
+ int rc;
+
+ rc = snprintf(page, count,
+ "used_mb: %d\n"
+ "busy_cnt: %d\n",
+ (cfs_atomic_read(&cli->cl_lru_in_list) +
+ cfs_atomic_read(&cli->cl_lru_busy)) >> shift,
+ cfs_atomic_read(&cli->cl_lru_busy));
+
+ return rc;
+}
+
+/* shrink the number of caching pages to a specific number */
+static int osc_wr_cached_mb(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *dev = data;
+ struct client_obd *cli = &dev->u.cli;
+ int pages_number, mult, rc;
+
+ mult = 1 << (20 - CFS_PAGE_SHIFT);
+ buffer = lprocfs_find_named_value(buffer, "used_mb:", &count);
+ rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
+ if (rc)
+ return rc;
+
+ if (pages_number < 0)
+ return -ERANGE;
+
+ rc = cfs_atomic_read(&cli->cl_lru_in_list) - pages_number;
+ if (rc > 0)
+ (void)osc_lru_shrink(cli, rc);
+
+ return count;
+}
+
static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
return count;
}
-static int osc_rd_create_count(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, "%d\n",
- obd->u.cli.cl_oscc.oscc_grow_count);
-}
-
-/**
- * Set OSC creator's osc_creator::oscc_grow_count
- *
- * \param file proc file
- * \param buffer buffer containing the value
- * \param count buffer size
- * \param data obd device
- *
- * \retval \a count
- */
-static int osc_wr_create_count(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *obd = data;
- int val, rc, i;
-
- if (obd == NULL)
- return 0;
-
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- /* The MDT ALWAYS needs to limit the precreate count to
- * OST_MAX_PRECREATE, and the constant cannot be changed
- * because it is a value shared between the OSC and OST
- * that is the maximum possible number of objects that will
- * ever be handled by MDT->OST recovery processing.
- *
- * If the OST ever gets a request to delete more orphans,
- * this implies that something has gone badly on the MDT
- * and the OST will refuse to delete so much data from the
- * filesystem as a safety measure. */
- if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
- return -ERANGE;
- if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
- return -ERANGE;
-
- for (i = 1; (i << 1) <= val; i <<= 1)
- ;
- obd->u.cli.cl_oscc.oscc_grow_count = i;
-
- return count;
-}
-
-/**
- * Read OSC creator's osc_creator::oscc_max_grow_count
- *
- * \param page buffer to hold the returning string
- * \param start
- * \param off
- * \param count
- * \param eof
- * proc read function parameters, please refer to kernel
- * code fs/proc/generic.c proc_file_read()
- * \param data obd device
- *
- * \retval number of characters printed.
- */
-static int osc_rd_max_create_count(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, "%d\n",
- obd->u.cli.cl_oscc.oscc_max_grow_count);
-}
-
-/**
- * Set OSC creator's osc_creator::oscc_max_grow_count
- *
- * \param file proc file
- * \param buffer buffer containing the value
- * \param count buffer size
- * \param data obd device
- *
- * \retval \a count
- */
-static int osc_wr_max_create_count(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *obd = data;
- int val, rc;
-
- if (obd == NULL)
- return 0;
-
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- if (val < 0)
- return -ERANGE;
- if (val > OST_MAX_PRECREATE)
- return -ERANGE;
-
- if (obd->u.cli.cl_oscc.oscc_grow_count > val)
- obd->u.cli.cl_oscc.oscc_grow_count = val;
-
- obd->u.cli.cl_oscc.oscc_max_grow_count = val;
-
- return count;
-}
-
-static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, LPU64"\n",
- obd->u.cli.cl_oscc.oscc_next_id);
-}
-
-static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, LPU64"\n",
- obd->u.cli.cl_oscc.oscc_last_id);
-}
-
static int osc_rd_checksum(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
osc_wr_max_rpcs_in_flight, 0 },
{ "destroys_in_flight", osc_rd_destroys_in_flight, 0, 0 },
{ "max_dirty_mb", osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
+ { "osc_cached_mb", osc_rd_cached_mb, osc_wr_cached_mb, 0 },
{ "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
{ "cur_grant_bytes", osc_rd_cur_grant_bytes,
osc_wr_cur_grant_bytes, 0 },
{ "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
{ "grant_shrink_interval", osc_rd_grant_shrink_interval,
osc_wr_grant_shrink_interval, 0 },
- { "create_count", osc_rd_create_count, osc_wr_create_count, 0 },
- { "max_create_count", osc_rd_max_create_count,
- osc_wr_max_create_count, 0},
- { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
- { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
{ "checksums", osc_rd_checksum, osc_wr_checksum, 0 },
{ "checksum_type", osc_rd_checksum_type, osc_wd_checksum_type, 0 },
{ "resend_count", osc_rd_resend_count, osc_wr_resend_count, 0},
git://git.whamcloud.com / fs / lustre-release.git / blobdiff