diff options
| -rw-r--r-- | fs/ext2/super.c | 15 | ||||
| -rw-r--r-- | fs/ext3/super.c | 21 | ||||
| -rw-r--r-- | fs/ext4/super.c | 21 | ||||
| -rw-r--r-- | include/linux/percpu_counter.h | 5 | ||||
| -rw-r--r-- | lib/percpu_counter.c | 8 |
5 files changed, 52 insertions, 18 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 639a32c3c9c1..2690e460f2ef 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -653,6 +653,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) int db_count; int i, j; __le32 features; + int err; sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) @@ -906,12 +907,20 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) get_random_bytes(&sbi->s_next_generation, sizeof(u32)); spin_lock_init(&sbi->s_next_gen_lock); - percpu_counter_init(&sbi->s_freeblocks_counter, + err = percpu_counter_init(&sbi->s_freeblocks_counter, ext2_count_free_blocks(sb)); - percpu_counter_init(&sbi->s_freeinodes_counter, + if (!err) { + err = percpu_counter_init(&sbi->s_freeinodes_counter, ext2_count_free_inodes(sb)); - percpu_counter_init(&sbi->s_dirs_counter, + } + if (!err) { + err = percpu_counter_init(&sbi->s_dirs_counter, ext2_count_dirs(sb)); + } + if (err) { + printk(KERN_ERR "EXT2-fs: insufficient memory\n"); + goto failed_mount3; + } /* * set up enough so that it can read an inode */ diff --git a/fs/ext3/super.c b/fs/ext3/super.c index c5a52c9775a0..ac5c6b0ecd64 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -1416,6 +1416,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) int i; int needs_recovery; __le32 features; + int err; sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) @@ -1675,12 +1676,20 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) get_random_bytes(&sbi->s_next_generation, sizeof(u32)); spin_lock_init(&sbi->s_next_gen_lock); - percpu_counter_init(&sbi->s_freeblocks_counter, - ext3_count_free_blocks(sb)); - percpu_counter_init(&sbi->s_freeinodes_counter, - ext3_count_free_inodes(sb)); - percpu_counter_init(&sbi->s_dirs_counter, - ext3_count_dirs(sb)); + err = percpu_counter_init(&sbi->s_freeblocks_counter, + ext3_count_free_blocks(sb)); + if (!err) { + err = percpu_counter_init(&sbi->s_freeinodes_counter, + ext3_count_free_inodes(sb)); + } + if (!err) { + err = percpu_counter_init(&sbi->s_dirs_counter, + ext3_count_dirs(sb)); + } + if (err) { + printk(KERN_ERR "EXT3-fs: insufficient memory\n"); + goto failed_mount3; + } /* per fileystem reservation list head & lock */ spin_lock_init(&sbi->s_rsv_window_lock); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1814d4b8ff1f..157c64c9a4e7 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1479,6 +1479,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) int needs_recovery; __le32 features; __u64 blocks_count; + int err; sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) @@ -1759,12 +1760,20 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) get_random_bytes(&sbi->s_next_generation, sizeof(u32)); spin_lock_init(&sbi->s_next_gen_lock); - percpu_counter_init(&sbi->s_freeblocks_counter, - ext4_count_free_blocks(sb)); - percpu_counter_init(&sbi->s_freeinodes_counter, - ext4_count_free_inodes(sb)); - percpu_counter_init(&sbi->s_dirs_counter, - ext4_count_dirs(sb)); + err = percpu_counter_init(&sbi->s_freeblocks_counter, + ext4_count_free_blocks(sb)); + if (!err) { + err = percpu_counter_init(&sbi->s_freeinodes_counter, + ext4_count_free_inodes(sb)); + } + if (!err) { + err = percpu_counter_init(&sbi->s_dirs_counter, + ext4_count_dirs(sb)); + } + if (err) { + printk(KERN_ERR "EXT4-fs: insufficient memory\n"); + goto failed_mount3; + } /* per fileystem reservation list head & lock */ spin_lock_init(&sbi->s_rsv_window_lock); diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h index 21e054595bcb..f7ecd38d7e9c 100644 --- a/include/linux/percpu_counter.h +++ b/include/linux/percpu_counter.h @@ -30,7 +30,7 @@ struct percpu_counter { #define FBC_BATCH (NR_CPUS*4) #endif -void percpu_counter_init(struct percpu_counter *fbc, s64 amount); +int percpu_counter_init(struct percpu_counter *fbc, s64 amount); void percpu_counter_destroy(struct percpu_counter *fbc); void percpu_counter_set(struct percpu_counter *fbc, s64 amount); void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch); @@ -78,9 +78,10 @@ struct percpu_counter { s64 count; }; -static inline void percpu_counter_init(struct percpu_counter *fbc, s64 amount) +static inline int percpu_counter_init(struct percpu_counter *fbc, s64 amount) { fbc->count = amount; + return 0; } static inline void percpu_counter_destroy(struct percpu_counter *fbc) diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c index 3b0ed80c1efd..3a59d84b2d1e 100644 --- a/lib/percpu_counter.c +++ b/lib/percpu_counter.c @@ -68,21 +68,27 @@ s64 __percpu_counter_sum(struct percpu_counter *fbc) } EXPORT_SYMBOL(__percpu_counter_sum); -void percpu_counter_init(struct percpu_counter *fbc, s64 amount) +int percpu_counter_init(struct percpu_counter *fbc, s64 amount) { spin_lock_init(&fbc->lock); fbc->count = amount; fbc->counters = alloc_percpu(s32); + if (!fbc->counters) + return -ENOMEM; #ifdef CONFIG_HOTPLUG_CPU mutex_lock(&percpu_counters_lock); list_add(&fbc->list, &percpu_counters); mutex_unlock(&percpu_counters_lock); #endif + return 0; } EXPORT_SYMBOL(percpu_counter_init); void percpu_counter_destroy(struct percpu_counter *fbc) { + if (!fbc->counters) + return; + free_percpu(fbc->counters); #ifdef CONFIG_HOTPLUG_CPU mutex_lock(&percpu_counters_lock); |