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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2007-10-16 18:38:25 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2007-10-17 18:50:02 -0400 |
| commit | 308ba3ece7db82e8b8d32d6962e4d12e09c5aa41 (patch) | |
| tree | 988a6a40329b2f22738560b2d56ca85f525cdee4 | |
| parent | 6bc9feff14a2524c4bb2bac533dfd874b1533e20 (diff) | |
| download | linux-308ba3ece7db82e8b8d32d6962e4d12e09c5aa41.tar.gz linux-308ba3ece7db82e8b8d32d6962e4d12e09c5aa41.tar.bz2 linux-308ba3ece7db82e8b8d32d6962e4d12e09c5aa41.zip | |
ext4: Convert s_r_blocks_count and s_free_blocks_count
Convert s_r_blocks_count and s_free_blocks_count to
s_r_blocks_count_lo and s_free_blocks_count_lo
This helps in finding BUGs due to direct partial access of
these split 64 bit values
Also fix direct partial access in ext4 code
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/super.c | 2 | ||||
| -rw-r--r-- | include/linux/ext4_fs.h | 12 |
2 files changed, 7 insertions, 7 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 11e80f061cb2..b11e9e2bcd01 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2709,7 +2709,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) buf->f_bsize = sb->s_blocksize; buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last; buf->f_bfree = percpu_counter_sum_positive(&sbi->s_freeblocks_counter); - es->s_free_blocks_count = cpu_to_le32(buf->f_bfree); + ext4_free_blocks_count_set(es, buf->f_bfree); buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es); if (buf->f_bfree < ext4_r_blocks_count(es)) buf->f_bavail = 0; diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h index d30d079a53e2..97dd409d5f4a 100644 --- a/include/linux/ext4_fs.h +++ b/include/linux/ext4_fs.h @@ -502,8 +502,8 @@ do { \ struct ext4_super_block { /*00*/ __le32 s_inodes_count; /* Inodes count */ __le32 s_blocks_count_lo; /* Blocks count */ - __le32 s_r_blocks_count; /* Reserved blocks count */ - __le32 s_free_blocks_count; /* Free blocks count */ + __le32 s_r_blocks_count_lo; /* Reserved blocks count */ + __le32 s_free_blocks_count_lo; /* Free blocks count */ /*10*/ __le32 s_free_inodes_count; /* Free inodes count */ __le32 s_first_data_block; /* First Data Block */ __le32 s_log_block_size; /* Block size */ @@ -987,13 +987,13 @@ static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es) static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es) { return ((ext4_fsblk_t)le32_to_cpu(es->s_r_blocks_count_hi) << 32) | - le32_to_cpu(es->s_r_blocks_count); + le32_to_cpu(es->s_r_blocks_count_lo); } static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es) { return ((ext4_fsblk_t)le32_to_cpu(es->s_free_blocks_count_hi) << 32) | - le32_to_cpu(es->s_free_blocks_count); + le32_to_cpu(es->s_free_blocks_count_lo); } static inline void ext4_blocks_count_set(struct ext4_super_block *es, @@ -1006,14 +1006,14 @@ static inline void ext4_blocks_count_set(struct ext4_super_block *es, static inline void ext4_free_blocks_count_set(struct ext4_super_block *es, ext4_fsblk_t blk) { - es->s_free_blocks_count = cpu_to_le32((u32)blk); + es->s_free_blocks_count_lo = cpu_to_le32((u32)blk); es->s_free_blocks_count_hi = cpu_to_le32(blk >> 32); } static inline void ext4_r_blocks_count_set(struct ext4_super_block *es, ext4_fsblk_t blk) { - es->s_r_blocks_count = cpu_to_le32((u32)blk); + es->s_r_blocks_count_lo = cpu_to_le32((u32)blk); es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32); } |