diff options
Diffstat (limited to 'fs/gfs2/rgrp.h')
| -rw-r--r-- | fs/gfs2/rgrp.h | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index b4b10f4de25f..5b3f4a896e6c 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -13,6 +13,14 @@ #include <linux/slab.h> #include <linux/uaccess.h> +/* Since each block in the file system is represented by two bits in the + * bitmap, one 64-bit word in the bitmap will represent 32 blocks. + * By reserving 32 blocks at a time, we can optimize / shortcut how we search + * through the bitmaps by looking a word at a time. + */ +#define RGRP_RSRV_MINBYTES 8 +#define RGRP_RSRV_MINBLKS ((u32)(RGRP_RSRV_MINBYTES * GFS2_NBBY)) + struct gfs2_rgrpd; struct gfs2_sbd; struct gfs2_holder; @@ -29,20 +37,18 @@ extern void gfs2_free_clones(struct gfs2_rgrpd *rgd); extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh); extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh); -extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip); -static inline void gfs2_qadata_put(struct gfs2_inode *ip) -{ - BUG_ON(ip->i_qadata == NULL); - kfree(ip->i_qadata); - ip->i_qadata = NULL; -} +extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip); -extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested); +#define GFS2_AF_ORLOV 1 +extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested, u32 flags); extern void gfs2_inplace_release(struct gfs2_inode *ip); extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n, bool dinode, u64 *generation); +extern int gfs2_rs_alloc(struct gfs2_inode *ip); +extern void gfs2_rs_deltree(struct gfs2_blkreserv *rs); +extern void gfs2_rs_delete(struct gfs2_inode *ip); extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta); extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen); extern void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip); @@ -68,4 +74,10 @@ extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed); extern int gfs2_fitrim(struct file *filp, void __user *argp); +/* This is how to tell if a reservation is in the rgrp tree: */ +static inline bool gfs2_rs_active(struct gfs2_blkreserv *rs) +{ + return rs && !RB_EMPTY_NODE(&rs->rs_node); +} + #endif /* __RGRP_DOT_H__ */ |