diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 11 | ||||
| -rw-r--r-- | fs/cifs/cifsfs.c | 9 | ||||
| -rw-r--r-- | fs/gfs2/super.c | 4 | ||||
| -rw-r--r-- | fs/inode.c | 113 | ||||
| -rw-r--r-- | fs/logfs/inode.c | 4 | ||||
| -rw-r--r-- | fs/ocfs2/inode.c | 8 | ||||
| -rw-r--r-- | fs/ocfs2/inode.h | 2 |
8 files changed, 55 insertions, 98 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 394d5422ab6a..eaf286abad17 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2395,7 +2395,7 @@ int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); void btrfs_dirty_inode(struct inode *inode); struct inode *btrfs_alloc_inode(struct super_block *sb); void btrfs_destroy_inode(struct inode *inode); -void btrfs_drop_inode(struct inode *inode); +int btrfs_drop_inode(struct inode *inode); int btrfs_init_cachep(void); void btrfs_destroy_cachep(void); long btrfs_ioctl_trans_end(struct file *file); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index ce02199ec4e5..2c54f04a0bf5 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3943,7 +3943,7 @@ again: if (atomic_read(&inode->i_count) > 1) d_prune_aliases(inode); /* - * btrfs_drop_inode will remove it from + * btrfs_drop_inode will have it removed from * the inode cache when its usage count * hits zero. */ @@ -6337,13 +6337,14 @@ free: kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode)); } -void btrfs_drop_inode(struct inode *inode) +int btrfs_drop_inode(struct inode *inode) { struct btrfs_root *root = BTRFS_I(inode)->root; - if (inode->i_nlink > 0 && btrfs_root_refs(&root->root_item) == 0) - generic_delete_inode(inode); + + if (btrfs_root_refs(&root->root_item) == 0) + return 1; else - generic_drop_inode(inode); + return generic_drop_inode(inode); } static void init_once(void *foo) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 8a2cf129e535..20914f5627dd 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -480,14 +480,13 @@ static int cifs_remount(struct super_block *sb, int *flags, char *data) return 0; } -void cifs_drop_inode(struct inode *inode) +static int cifs_drop_inode(struct inode *inode) { struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) - return generic_drop_inode(inode); - - return generic_delete_inode(inode); + /* no serverino => unconditional eviction */ + return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || + generic_drop_inode(inode); } static const struct super_operations cifs_super_ops = { diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 555f5a417c67..fa865ab37f12 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1191,7 +1191,7 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) * node for later deallocation. */ -static void gfs2_drop_inode(struct inode *inode) +static int gfs2_drop_inode(struct inode *inode) { struct gfs2_inode *ip = GFS2_I(inode); @@ -1200,7 +1200,7 @@ static void gfs2_drop_inode(struct inode *inode) if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) clear_nlink(inode); } - generic_drop_inode(inode); + return generic_drop_inode(inode); } static int is_ancestor(const struct dentry *d1, const struct dentry *d2) diff --git a/fs/inode.c b/fs/inode.c index 82ca3562a688..0e077619cbf6 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1183,58 +1183,51 @@ void remove_inode_hash(struct inode *inode) } EXPORT_SYMBOL(remove_inode_hash); +int generic_delete_inode(struct inode *inode) +{ + return 1; +} +EXPORT_SYMBOL(generic_delete_inode); + /* - * Tell the filesystem that this inode is no longer of any interest and should - * be completely destroyed. - * - * We leave the inode in the inode hash table until *after* the filesystem's - * ->delete_inode completes. This ensures that an iget (such as nfsd might - * instigate) will always find up-to-date information either in the hash or on - * disk. - * - * I_FREEING is set so that no-one will take a new reference to the inode while - * it is being deleted. + * Normal UNIX filesystem behaviour: delete the + * inode when the usage count drops to zero, and + * i_nlink is zero. */ -void generic_delete_inode(struct inode *inode) +int generic_drop_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); - - evict(inode); - - spin_lock(&inode_lock); - hlist_del_init(&inode->i_hash); - spin_unlock(&inode_lock); - wake_up_inode(inode); - BUG_ON(inode->i_state != (I_FREEING | I_CLEAR)); - destroy_inode(inode); + return !inode->i_nlink || hlist_unhashed(&inode->i_hash); } -EXPORT_SYMBOL(generic_delete_inode); +EXPORT_SYMBOL_GPL(generic_drop_inode); -/** - * generic_detach_inode - remove inode from inode lists - * @inode: inode to remove - * - * Remove inode from inode lists, write it if it's dirty. This is just an - * internal VFS helper exported for hugetlbfs. Do not use! +/* + * Called when we're dropping the last reference + * to an inode. * - * Returns 1 if inode should be completely destroyed. + * Call the FS "drop_inode()" function, defaulting to + * the legacy UNIX filesystem behaviour. If it tells + * us to evict inode, do so. Otherwise, retain inode + * in cache if fs is alive, sync and evict if fs is + * shutting down. */ -static int generic_detach_inode(struct inode *inode) +static void iput_final(struct inode *inode) { struct super_block *sb = inode->i_sb; + const struct super_operations *op = inode->i_sb->s_op; + int drop; + + if (op && op->drop_inode) + drop = op->drop_inode(inode); + else + drop = generic_drop_inode(inode); - if (!hlist_unhashed(&inode->i_hash)) { + if (!drop) { if (!(inode->i_state & (I_DIRTY|I_SYNC))) list_move(&inode->i_list, &inode_unused); inodes_stat.nr_unused++; if (sb->s_flags & MS_ACTIVE) { spin_unlock(&inode_lock); - return 0; + return; } WARN_ON(inode->i_state & I_NEW); inode->i_state |= I_WILL_FREE; @@ -1252,53 +1245,15 @@ static int generic_detach_inode(struct inode *inode) inode->i_state |= I_FREEING; inodes_stat.nr_inodes--; spin_unlock(&inode_lock); - return 1; -} - -static void generic_forget_inode(struct inode *inode) -{ - if (!generic_detach_inode(inode)) - return; evict(inode); + spin_lock(&inode_lock); + hlist_del_init(&inode->i_hash); + spin_unlock(&inode_lock); wake_up_inode(inode); + BUG_ON(inode->i_state != (I_FREEING | I_CLEAR)); destroy_inode(inode); } -/* - * Normal UNIX filesystem behaviour: delete the - * inode when the usage count drops to zero, and - * i_nlink is zero. - */ -void generic_drop_inode(struct inode *inode) -{ - if (!inode->i_nlink) - generic_delete_inode(inode); - else - generic_forget_inode(inode); -} -EXPORT_SYMBOL_GPL(generic_drop_inode); - -/* - * Called when we're dropping the last reference - * to an inode. - * - * Call the FS "drop()" function, defaulting to - * the legacy UNIX filesystem behaviour.. - * - * NOTE! NOTE! NOTE! We're called with the inode lock - * held, and the drop function is supposed to release - * the lock! - */ -static inline void iput_final(struct inode *inode) -{ - const struct super_operations *op = inode->i_sb->s_op; - void (*drop)(struct inode *) = generic_drop_inode; - - if (op && op->drop_inode) - drop = op->drop_inode; - drop(inode); -} - /** * iput - put an inode * @inode: inode to put diff --git a/fs/logfs/inode.c b/fs/logfs/inode.c index 78be674d95c8..d8c71ece098f 100644 --- a/fs/logfs/inode.c +++ b/fs/logfs/inode.c @@ -287,7 +287,7 @@ static int logfs_write_inode(struct inode *inode, struct writeback_control *wbc) } /* called with inode_lock held */ -static void logfs_drop_inode(struct inode *inode) +static int logfs_drop_inode(struct inode *inode) { struct logfs_super *super = logfs_super(inode->i_sb); struct logfs_inode *li = logfs_inode(inode); @@ -295,7 +295,7 @@ static void logfs_drop_inode(struct inode *inode) spin_lock(&logfs_inode_lock); list_move(&li->li_freeing_list, &super->s_freeing_list); spin_unlock(&logfs_inode_lock); - generic_drop_inode(inode); + return generic_drop_inode(inode); } static void logfs_set_ino_generation(struct super_block *sb, diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index eb7fd07c90f2..0492464916b1 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -1194,9 +1194,10 @@ void ocfs2_evict_inode(struct inode *inode) /* Called under inode_lock, with no more references on the * struct inode, so it's safe here to check the flags field * and to manipulate i_nlink without any other locks. */ -void ocfs2_drop_inode(struct inode *inode) +int ocfs2_drop_inode(struct inode *inode) { struct ocfs2_inode_info *oi = OCFS2_I(inode); + int res; mlog_entry_void(); @@ -1204,11 +1205,12 @@ void ocfs2_drop_inode(struct inode *inode) (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) - generic_delete_inode(inode); + res = 1; else - generic_drop_inode(inode); + res = generic_drop_inode(inode); mlog_exit_void(); + return res; } /* diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h index 975eedd7b243..6de5a869db30 100644 --- a/fs/ocfs2/inode.h +++ b/fs/ocfs2/inode.h @@ -124,7 +124,7 @@ static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) } void ocfs2_evict_inode(struct inode *inode); -void ocfs2_drop_inode(struct inode *inode); +int ocfs2_drop_inode(struct inode *inode); /* Flags for ocfs2_iget() */ #define OCFS2_FI_FLAG_SYSFILE 0x1 |