diff options
Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r-- | drivers/md/dm.c | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index dfd037858902..59bf797de9a5 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c | |||
@@ -1,6 +1,6 @@ | |||
1 | /* | 1 | /* |
2 | * Copyright (C) 2001, 2002 Sistina Software (UK) Limited. | 2 | * Copyright (C) 2001, 2002 Sistina Software (UK) Limited. |
3 | * Copyright (C) 2004 Red Hat, Inc. All rights reserved. | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
4 | * | 4 | * |
5 | * This file is released under the GPL. | 5 | * This file is released under the GPL. |
6 | */ | 6 | */ |
@@ -764,7 +764,7 @@ static int dm_any_congested(void *congested_data, int bdi_bits) | |||
764 | *---------------------------------------------------------------*/ | 764 | *---------------------------------------------------------------*/ |
765 | static DEFINE_IDR(_minor_idr); | 765 | static DEFINE_IDR(_minor_idr); |
766 | 766 | ||
767 | static void free_minor(unsigned int minor) | 767 | static void free_minor(int minor) |
768 | { | 768 | { |
769 | spin_lock(&_minor_lock); | 769 | spin_lock(&_minor_lock); |
770 | idr_remove(&_minor_idr, minor); | 770 | idr_remove(&_minor_idr, minor); |
@@ -774,7 +774,7 @@ static void free_minor(unsigned int minor) | |||
774 | /* | 774 | /* |
775 | * See if the device with a specific minor # is free. | 775 | * See if the device with a specific minor # is free. |
776 | */ | 776 | */ |
777 | static int specific_minor(struct mapped_device *md, unsigned int minor) | 777 | static int specific_minor(struct mapped_device *md, int minor) |
778 | { | 778 | { |
779 | int r, m; | 779 | int r, m; |
780 | 780 | ||
@@ -807,10 +807,9 @@ out: | |||
807 | return r; | 807 | return r; |
808 | } | 808 | } |
809 | 809 | ||
810 | static int next_free_minor(struct mapped_device *md, unsigned int *minor) | 810 | static int next_free_minor(struct mapped_device *md, int *minor) |
811 | { | 811 | { |
812 | int r; | 812 | int r, m; |
813 | unsigned int m; | ||
814 | 813 | ||
815 | r = idr_pre_get(&_minor_idr, GFP_KERNEL); | 814 | r = idr_pre_get(&_minor_idr, GFP_KERNEL); |
816 | if (!r) | 815 | if (!r) |
@@ -841,7 +840,7 @@ static struct block_device_operations dm_blk_dops; | |||
841 | /* | 840 | /* |
842 | * Allocate and initialise a blank device with a given minor. | 841 | * Allocate and initialise a blank device with a given minor. |
843 | */ | 842 | */ |
844 | static struct mapped_device *alloc_dev(unsigned int minor, int persistent) | 843 | static struct mapped_device *alloc_dev(int minor) |
845 | { | 844 | { |
846 | int r; | 845 | int r; |
847 | struct mapped_device *md = kmalloc(sizeof(*md), GFP_KERNEL); | 846 | struct mapped_device *md = kmalloc(sizeof(*md), GFP_KERNEL); |
@@ -856,7 +855,10 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) | |||
856 | goto bad0; | 855 | goto bad0; |
857 | 856 | ||
858 | /* get a minor number for the dev */ | 857 | /* get a minor number for the dev */ |
859 | r = persistent ? specific_minor(md, minor) : next_free_minor(md, &minor); | 858 | if (minor == DM_ANY_MINOR) |
859 | r = next_free_minor(md, &minor); | ||
860 | else | ||
861 | r = specific_minor(md, minor); | ||
860 | if (r < 0) | 862 | if (r < 0) |
861 | goto bad1; | 863 | goto bad1; |
862 | 864 | ||
@@ -929,7 +931,7 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) | |||
929 | 931 | ||
930 | static void free_dev(struct mapped_device *md) | 932 | static void free_dev(struct mapped_device *md) |
931 | { | 933 | { |
932 | unsigned int minor = md->disk->first_minor; | 934 | int minor = md->disk->first_minor; |
933 | 935 | ||
934 | if (md->suspended_bdev) { | 936 | if (md->suspended_bdev) { |
935 | thaw_bdev(md->suspended_bdev, NULL); | 937 | thaw_bdev(md->suspended_bdev, NULL); |
@@ -1015,12 +1017,11 @@ static void __unbind(struct mapped_device *md) | |||
1015 | /* | 1017 | /* |
1016 | * Constructor for a new device. | 1018 | * Constructor for a new device. |
1017 | */ | 1019 | */ |
1018 | static int create_aux(unsigned int minor, int persistent, | 1020 | int dm_create(int minor, struct mapped_device **result) |
1019 | struct mapped_device **result) | ||
1020 | { | 1021 | { |
1021 | struct mapped_device *md; | 1022 | struct mapped_device *md; |
1022 | 1023 | ||
1023 | md = alloc_dev(minor, persistent); | 1024 | md = alloc_dev(minor); |
1024 | if (!md) | 1025 | if (!md) |
1025 | return -ENXIO; | 1026 | return -ENXIO; |
1026 | 1027 | ||
@@ -1028,16 +1029,6 @@ static int create_aux(unsigned int minor, int persistent, | |||
1028 | return 0; | 1029 | return 0; |
1029 | } | 1030 | } |
1030 | 1031 | ||
1031 | int dm_create(struct mapped_device **result) | ||
1032 | { | ||
1033 | return create_aux(0, 0, result); | ||
1034 | } | ||
1035 | |||
1036 | int dm_create_with_minor(unsigned int minor, struct mapped_device **result) | ||
1037 | { | ||
1038 | return create_aux(minor, 1, result); | ||
1039 | } | ||
1040 | |||
1041 | static struct mapped_device *dm_find_md(dev_t dev) | 1032 | static struct mapped_device *dm_find_md(dev_t dev) |
1042 | { | 1033 | { |
1043 | struct mapped_device *md; | 1034 | struct mapped_device *md; |