[KJ][PATCH] is_power_of_2 in fs/hfs
Replacing (n & (n-1)) in the context of power of 2 checks with is_power_of_2 Signed-off-by: vignesh babu <[EMAIL PROTECTED]> --- diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c index 5fd0ed7..8a3a650 100644 --- a/fs/hfs/btree.c +++ b/fs/hfs/btree.c @@ -9,6 +9,7 @@ */ #include +#include #include "btree.h" @@ -76,7 +77,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke tree->depth = be16_to_cpu(head->depth); size = tree->node_size; - if (!size || size & (size - 1)) + if (!is_power_of_2(size)) goto fail_page; if (!tree->node_count) goto fail_page; diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index a9b9e87..90ebab7 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -10,6 +10,7 @@ #include #include +#include #include "hfsplus_fs.h" #include "hfsplus_raw.h" @@ -69,7 +70,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) } size = tree->node_size; - if (!size || size & (size - 1)) + if (!is_power_of_2(size)) goto fail_page; if (!tree->node_count) goto fail_page; -- Regards, Vignesh Babu BM _ "Why is it that every time I'm with you, makes me believe in magic?" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[KJ][PATCH] is_power_of_2 in fs/hfs
Replacing (n (n-1)) in the context of power of 2 checks with is_power_of_2 Signed-off-by: vignesh babu [EMAIL PROTECTED] --- diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c index 5fd0ed7..8a3a650 100644 --- a/fs/hfs/btree.c +++ b/fs/hfs/btree.c @@ -9,6 +9,7 @@ */ #include linux/pagemap.h +#include linux/log2.h #include btree.h @@ -76,7 +77,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke tree-depth = be16_to_cpu(head-depth); size = tree-node_size; - if (!size || size (size - 1)) + if (!is_power_of_2(size)) goto fail_page; if (!tree-node_count) goto fail_page; diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index a9b9e87..90ebab7 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -10,6 +10,7 @@ #include linux/slab.h #include linux/pagemap.h +#include linux/log2.h #include hfsplus_fs.h #include hfsplus_raw.h @@ -69,7 +70,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) } size = tree-node_size; - if (!size || size (size - 1)) + if (!is_power_of_2(size)) goto fail_page; if (!tree-node_count) goto fail_page; -- Regards, Vignesh Babu BM _ Why is it that every time I'm with you, makes me believe in magic? - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
