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Code Issues Releases Wiki Activity

UBI: re-name volumes_mutex to device_mutex

Browse source 
The mutex essencially protects the entire UBI device, so the
old @volumes_mutex name is a little misleading.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2009-05-07 11:46:49 +03:00
parent 383d08e045
commit f089c0b28c
5 changed files with 23 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/mtd/ubi/build.c
View file

@ -806,7 +806,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
mutex_init(&ubi->buf_mutex);
mutex_init(&ubi->ckvol_mutex);
mutex_init(&ubi->volumes_mutex);
mutex_init(&ubi->device_mutex);
spin_lock_init(&ubi->volumes_lock);
ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);

22
drivers/mtd/ubi/cdev.c
View file

@ -558,7 +558,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
break;
}
/* Set volume property command*/
/* Set volume property command */
case UBI_IOCSETPROP:
{
struct ubi_set_prop_req req;
@ -571,9 +571,9 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
}
switch (req.property) {
case UBI_PROP_DIRECT_WRITE:
mutex_lock(&ubi->volumes_mutex);
mutex_lock(&ubi->device_mutex);
desc->vol->direct_writes = !!req.value;
mutex_unlock(&ubi->volumes_mutex);
mutex_unlock(&ubi->device_mutex);
break;
default:
err = -EINVAL;
@ -810,7 +810,9 @@ static int rename_volumes(struct ubi_device *ubi,
re->desc->vol->vol_id, re->desc->vol->name);
}
mutex_lock(&ubi->device_mutex);
err = ubi_rename_volumes(ubi, &rename_list);
mutex_unlock(&ubi->device_mutex);
out_free:
list_for_each_entry_safe(re, re1, &rename_list, list) {
@ -854,9 +856,9 @@ static long ubi_cdev_ioctl(struct file *file, unsigned int cmd,
if (err)
break;
mutex_lock(&ubi->volumes_mutex);
mutex_lock(&ubi->device_mutex);
err = ubi_create_volume(ubi, &req);
mutex_unlock(&ubi->volumes_mutex);
mutex_unlock(&ubi->device_mutex);
if (err)
break;
@ -885,9 +887,9 @@ static long ubi_cdev_ioctl(struct file *file, unsigned int cmd,
break;
}
mutex_lock(&ubi->volumes_mutex);
mutex_lock(&ubi->device_mutex);
err = ubi_remove_volume(desc, 0);
mutex_unlock(&ubi->volumes_mutex);
mutex_unlock(&ubi->device_mutex);
/*
* The volume is deleted (unless an error occurred), and the
@ -924,9 +926,9 @@ static long ubi_cdev_ioctl(struct file *file, unsigned int cmd,
pebs = div_u64(req.bytes + desc->vol->usable_leb_size - 1,
desc->vol->usable_leb_size);
mutex_lock(&ubi->volumes_mutex);
mutex_lock(&ubi->device_mutex);
err = ubi_resize_volume(desc, pebs);
mutex_unlock(&ubi->volumes_mutex);
mutex_unlock(&ubi->device_mutex);
ubi_close_volume(desc);
break;
}
@ -950,9 +952,7 @@ static long ubi_cdev_ioctl(struct file *file, unsigned int cmd,
break;
}
mutex_lock(&ubi->volumes_mutex);
err = rename_volumes(ubi, req);
mutex_unlock(&ubi->volumes_mutex);
kfree(req);
break;
}

8
drivers/mtd/ubi/ubi.h
View file

@ -305,9 +305,9 @@ struct ubi_wl_entry;
* @vtbl_slots: how many slots are available in the volume table
* @vtbl_size: size of the volume table in bytes
* @vtbl: in-RAM volume table copy
* @volumes_mutex: protects on-flash volume table and serializes volume
* changes, like creation, deletion, update, re-size,
* re-name and set property
* @device_mutex: protects on-flash volume table and serializes volume
* creation, deletion, update, re-size, re-name and set
* property
*
* @max_ec: current highest erase counter value
* @mean_ec: current mean erase counter value
@ -388,7 +388,7 @@ struct ubi_device {
int vtbl_slots;
int vtbl_size;
struct ubi_vtbl_record *vtbl;
struct mutex volumes_mutex;
struct mutex device_mutex;
int max_ec;
/* Note, mean_ec is not updated run-time - should be fixed */

8
drivers/mtd/ubi/upd.c
View file

@ -68,9 +68,9 @@ static int set_update_marker(struct ubi_device *ubi, struct ubi_volume *vol)
sizeof(struct ubi_vtbl_record));
vtbl_rec.upd_marker = 1;
mutex_lock(&ubi->volumes_mutex);
mutex_lock(&ubi->device_mutex);
err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
mutex_unlock(&ubi->volumes_mutex);
mutex_unlock(&ubi->device_mutex);
vol->upd_marker = 1;
return err;
}
@ -109,9 +109,9 @@ static int clear_update_marker(struct ubi_device *ubi, struct ubi_volume *vol,
vol->last_eb_bytes = vol->usable_leb_size;
}
mutex_lock(&ubi->volumes_mutex);
mutex_lock(&ubi->device_mutex);
err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
mutex_unlock(&ubi->volumes_mutex);
mutex_unlock(&ubi->device_mutex);
vol->upd_marker = 0;
return err;
}

6
drivers/mtd/ubi/vmt.c
View file

@ -198,7 +198,7 @@ static void volume_sysfs_close(struct ubi_volume *vol)
* %UBI_VOL_NUM_AUTO, this function automatically assign ID to the new volume
* and saves it in @req->vol_id. Returns zero in case of success and a negative
* error code in case of failure. Note, the caller has to have the
* @ubi->volumes_mutex locked.
* @ubi->device_mutex locked.
*/
int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
{
@ -403,7 +403,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
*
* This function removes volume described by @desc. The volume has to be opened
* in "exclusive" mode. Returns zero in case of success and a negative error
* code in case of failure. The caller has to have the @ubi->volumes_mutex
* code in case of failure. The caller has to have the @ubi->device_mutex
* locked.
*/
int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl)
@ -485,7 +485,7 @@ int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl)
*
* This function re-sizes the volume and returns zero in case of success, and a
* negative error code in case of failure. The caller has to have the
* @ubi->volumes_mutex locked.
* @ubi->device_mutex locked.
*/
int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
{