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authorArjan van de Ven <arjan@linux.intel.com>2007-02-12 03:55:39 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 12:48:46 -0500
commit92e1d5be91a0e3ffa5c4697eeb09b2aa22792122 (patch)
tree4eb22a9f6c38e9f4cc2a5100cd6659b0af08b7ae /mm
parent754661f143e70d66eae6c48532ca245aa05dec0e (diff)
[PATCH] mark struct inode_operations const 2
Many struct inode_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/shmem.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index b38e17169271..882053031aa0 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -178,9 +178,9 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages)
178static struct super_operations shmem_ops; 178static struct super_operations shmem_ops;
179static const struct address_space_operations shmem_aops; 179static const struct address_space_operations shmem_aops;
180static const struct file_operations shmem_file_operations; 180static const struct file_operations shmem_file_operations;
181static struct inode_operations shmem_inode_operations; 181static const struct inode_operations shmem_inode_operations;
182static struct inode_operations shmem_dir_inode_operations; 182static const struct inode_operations shmem_dir_inode_operations;
183static struct inode_operations shmem_special_inode_operations; 183static const struct inode_operations shmem_special_inode_operations;
184static struct vm_operations_struct shmem_vm_ops; 184static struct vm_operations_struct shmem_vm_ops;
185 185
186static struct backing_dev_info shmem_backing_dev_info __read_mostly = { 186static struct backing_dev_info shmem_backing_dev_info __read_mostly = {
@@ -1410,8 +1410,8 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
1410} 1410}
1411 1411
1412#ifdef CONFIG_TMPFS 1412#ifdef CONFIG_TMPFS
1413static struct inode_operations shmem_symlink_inode_operations; 1413static const struct inode_operations shmem_symlink_inode_operations;
1414static struct inode_operations shmem_symlink_inline_operations; 1414static const struct inode_operations shmem_symlink_inline_operations;
1415 1415
1416/* 1416/*
1417 * Normally tmpfs makes no use of shmem_prepare_write, but it 1417 * Normally tmpfs makes no use of shmem_prepare_write, but it
@@ -1904,12 +1904,12 @@ static void shmem_put_link(struct dentry *dentry, struct nameidata *nd, void *co
1904 } 1904 }
1905} 1905}
1906 1906
1907static struct inode_operations shmem_symlink_inline_operations = { 1907static const struct inode_operations shmem_symlink_inline_operations = {
1908 .readlink = generic_readlink, 1908 .readlink = generic_readlink,
1909 .follow_link = shmem_follow_link_inline, 1909 .follow_link = shmem_follow_link_inline,
1910}; 1910};
1911 1911
1912static struct inode_operations shmem_symlink_inode_operations = { 1912static const struct inode_operations shmem_symlink_inode_operations = {
1913 .truncate = shmem_truncate, 1913 .truncate = shmem_truncate,
1914 .readlink = generic_readlink, 1914 .readlink = generic_readlink,
1915 .follow_link = shmem_follow_link, 1915 .follow_link = shmem_follow_link,
@@ -2335,7 +2335,7 @@ static const struct file_operations shmem_file_operations = {
2335#endif 2335#endif
2336}; 2336};
2337 2337
2338static struct inode_operations shmem_inode_operations = { 2338static const struct inode_operations shmem_inode_operations = {
2339 .truncate = shmem_truncate, 2339 .truncate = shmem_truncate,
2340 .setattr = shmem_notify_change, 2340 .setattr = shmem_notify_change,
2341 .truncate_range = shmem_truncate_range, 2341 .truncate_range = shmem_truncate_range,
@@ -2349,7 +2349,7 @@ static struct inode_operations shmem_inode_operations = {
2349 2349
2350}; 2350};
2351 2351
2352static struct inode_operations shmem_dir_inode_operations = { 2352static const struct inode_operations shmem_dir_inode_operations = {
2353#ifdef CONFIG_TMPFS 2353#ifdef CONFIG_TMPFS
2354 .create = shmem_create, 2354 .create = shmem_create,
2355 .lookup = simple_lookup, 2355 .lookup = simple_lookup,
@@ -2371,7 +2371,7 @@ static struct inode_operations shmem_dir_inode_operations = {
2371#endif 2371#endif
2372}; 2372};
2373 2373
2374static struct inode_operations shmem_special_inode_operations = { 2374static const struct inode_operations shmem_special_inode_operations = {
2375#ifdef CONFIG_TMPFS_POSIX_ACL 2375#ifdef CONFIG_TMPFS_POSIX_ACL
2376 .setattr = shmem_notify_change, 2376 .setattr = shmem_notify_change,
2377 .setxattr = generic_setxattr, 2377 .setxattr = generic_setxattr,