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quota: provide interface for readding allocated space into reserved space

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ext4 needs to convert allocated (metadata) blocks back into blocks
reserved for delayed allocation. Add functions into quota code for
supporting such operation.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Jan Kara
2013-08-17 09:32:32 -04:00
committed by Theodore Ts'o
parent 19883bd965
commit 1c8924eb10
4 changed files with 71 additions and 2 deletions
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include/linux/fs.h
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@@ -2503,6 +2503,7 @@ extern void generic_fillattr(struct inode *, struct kstat *);
extern int vfs_getattr(struct path *, struct kstat *);
void __inode_add_bytes(struct inode *inode, loff_t bytes);
void inode_add_bytes(struct inode *inode, loff_t bytes);
void __inode_sub_bytes(struct inode *inode, loff_t bytes);
void inode_sub_bytes(struct inode *inode, loff_t bytes);
loff_t inode_get_bytes(struct inode *inode);
void inode_set_bytes(struct inode *inode, loff_t bytes);