diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:02:57 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:02:57 +0200 |
commit | f541ae326fa120fa5c57433e4d9a133df212ce41 (patch) | |
tree | bdbd94ec72cfc601118051cb35e8617d55510177 /fs/inode.c | |
parent | e255357764f92afcafafbd4879b222b8c752065a (diff) | |
parent | 0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c (diff) |
Merge branch 'linus' into perfcounters/core-v2
Merge reason: we have gathered quite a few conflicts, need to merge upstream
Conflicts:
arch/powerpc/kernel/Makefile
arch/x86/ia32/ia32entry.S
arch/x86/include/asm/hardirq.h
arch/x86/include/asm/unistd_32.h
arch/x86/include/asm/unistd_64.h
arch/x86/kernel/cpu/common.c
arch/x86/kernel/irq.c
arch/x86/kernel/syscall_table_32.S
arch/x86/mm/iomap_32.c
include/linux/sched.h
kernel/Makefile
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/inode.c')
-rw-r--r-- | fs/inode.c | 84 |
1 files changed, 66 insertions, 18 deletions
diff --git a/fs/inode.c b/fs/inode.c index 913ab2d9a5d..d06d6d268de 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -17,6 +17,7 @@ #include <linux/hash.h> #include <linux/swap.h> #include <linux/security.h> +#include <linux/ima.h> #include <linux/pagemap.h> #include <linux/cdev.h> #include <linux/bootmem.h> @@ -147,13 +148,13 @@ struct inode *inode_init_always(struct super_block *sb, struct inode *inode) inode->i_cdev = NULL; inode->i_rdev = 0; inode->dirtied_when = 0; - if (security_inode_alloc(inode)) { - if (inode->i_sb->s_op->destroy_inode) - inode->i_sb->s_op->destroy_inode(inode); - else - kmem_cache_free(inode_cachep, (inode)); - return NULL; - } + + if (security_inode_alloc(inode)) + goto out_free_inode; + + /* allocate and initialize an i_integrity */ + if (ima_inode_alloc(inode)) + goto out_free_security; spin_lock_init(&inode->i_lock); lockdep_set_class(&inode->i_lock, &sb->s_type->i_lock_key); @@ -189,6 +190,15 @@ struct inode *inode_init_always(struct super_block *sb, struct inode *inode) inode->i_mapping = mapping; return inode; + +out_free_security: + security_inode_free(inode); +out_free_inode: + if (inode->i_sb->s_op->destroy_inode) + inode->i_sb->s_op->destroy_inode(inode); + else + kmem_cache_free(inode_cachep, (inode)); + return NULL; } EXPORT_SYMBOL(inode_init_always); @@ -284,7 +294,7 @@ void clear_inode(struct inode *inode) BUG_ON(!(inode->i_state & I_FREEING)); BUG_ON(inode->i_state & I_CLEAR); inode_sync_wait(inode); - DQUOT_DROP(inode); + vfs_dq_drop(inode); if (inode->i_sb->s_op->clear_inode) inode->i_sb->s_op->clear_inode(inode); if (S_ISBLK(inode->i_mode) && inode->i_bdev) @@ -356,9 +366,12 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose) if (tmp == head) break; inode = list_entry(tmp, struct inode, i_sb_list); + if (inode->i_state & I_NEW) + continue; invalidate_inode_buffers(inode); if (!atomic_read(&inode->i_count)) { list_move(&inode->i_list, dispose); + WARN_ON(inode->i_state & I_NEW); inode->i_state |= I_FREEING; count++; continue; @@ -460,6 +473,7 @@ static void prune_icache(int nr_to_scan) continue; } list_move(&inode->i_list, &freeable); + WARN_ON(inode->i_state & I_NEW); inode->i_state |= I_FREEING; nr_pruned++; } @@ -656,6 +670,7 @@ void unlock_new_inode(struct inode *inode) * just created it (so there can be no old holders * that haven't tested I_LOCK). */ + WARN_ON((inode->i_state & (I_LOCK|I_NEW)) != (I_LOCK|I_NEW)); inode->i_state &= ~(I_LOCK|I_NEW); wake_up_inode(inode); } @@ -1145,6 +1160,7 @@ void generic_delete_inode(struct inode *inode) list_del_init(&inode->i_list); list_del_init(&inode->i_sb_list); + WARN_ON(inode->i_state & I_NEW); inode->i_state |= I_FREEING; inodes_stat.nr_inodes--; spin_unlock(&inode_lock); @@ -1154,7 +1170,7 @@ void generic_delete_inode(struct inode *inode) if (op->delete_inode) { void (*delete)(struct inode *) = op->delete_inode; if (!is_bad_inode(inode)) - DQUOT_INIT(inode); + vfs_dq_init(inode); /* Filesystems implementing their own * s_op->delete_inode are required to call * truncate_inode_pages and clear_inode() @@ -1186,16 +1202,19 @@ static void generic_forget_inode(struct inode *inode) spin_unlock(&inode_lock); return; } + WARN_ON(inode->i_state & I_NEW); inode->i_state |= I_WILL_FREE; spin_unlock(&inode_lock); write_inode_now(inode, 1); spin_lock(&inode_lock); + WARN_ON(inode->i_state & I_NEW); inode->i_state &= ~I_WILL_FREE; inodes_stat.nr_unused--; hlist_del_init(&inode->i_hash); } list_del_init(&inode->i_list); list_del_init(&inode->i_sb_list); + WARN_ON(inode->i_state & I_NEW); inode->i_state |= I_FREEING; inodes_stat.nr_inodes--; spin_unlock(&inode_lock); @@ -1283,6 +1302,40 @@ sector_t bmap(struct inode * inode, sector_t block) } EXPORT_SYMBOL(bmap); +/* + * With relative atime, only update atime if the previous atime is + * earlier than either the ctime or mtime or if at least a day has + * passed since the last atime update. + */ +static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, + struct timespec now) +{ + + if (!(mnt->mnt_flags & MNT_RELATIME)) + return 1; + /* + * Is mtime younger than atime? If yes, update atime: + */ + if (timespec_compare(&inode->i_mtime, &inode->i_atime) >= 0) + return 1; + /* + * Is ctime younger than atime? If yes, update atime: + */ + if (timespec_compare(&inode->i_ctime, &inode->i_atime) >= 0) + return 1; + + /* + * Is the previous atime value older than a day? If yes, + * update atime: + */ + if ((long)(now.tv_sec - inode->i_atime.tv_sec) >= 24*60*60) + return 1; + /* + * Good, we can skip the atime update: + */ + return 0; +} + /** * touch_atime - update the access time * @mnt: mount the inode is accessed on @@ -1310,17 +1363,12 @@ void touch_atime(struct vfsmount *mnt, struct dentry *dentry) goto out; if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)) goto out; - if (mnt->mnt_flags & MNT_RELATIME) { - /* - * With relative atime, only update atime if the previous - * atime is earlier than either the ctime or mtime. - */ - if (timespec_compare(&inode->i_mtime, &inode->i_atime) < 0 && - timespec_compare(&inode->i_ctime, &inode->i_atime) < 0) - goto out; - } now = current_fs_time(inode->i_sb); + + if (!relatime_need_update(mnt, inode, now)) + goto out; + if (timespec_equal(&inode->i_atime, &now)) goto out; |