diff options
Diffstat (limited to 'fs/xfs/xfs_inode.h')
| -rw-r--r-- | fs/xfs/xfs_inode.h | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 1eebc53df7d7..a91d9fb1effc 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -379,6 +379,20 @@ static inline void xfs_ifunlock(struct xfs_inode *ip) >> XFS_ILOCK_SHIFT) /* + * Layouts are broken in the BREAK_WRITE case to ensure that + * layout-holders do not collide with local writes. Additionally, + * layouts are broken in the BREAK_UNMAP case to make sure the + * layout-holder has a consistent view of the file's extent map. While + * BREAK_WRITE breaks can be satisfied by recalling FL_LAYOUT leases, + * BREAK_UNMAP breaks additionally require waiting for busy dax-pages to + * go idle. + */ +enum layout_break_reason { + BREAK_WRITE, + BREAK_UNMAP, +}; + +/* * For multiple groups support: if S_ISGID bit is set in the parent * directory, group of new file is set to that of the parent, and * new subdirectory gets S_ISGID bit from parent. @@ -415,8 +429,8 @@ uint xfs_ilock_attr_map_shared(struct xfs_inode *); uint xfs_ip2xflags(struct xfs_inode *); int xfs_ifree(struct xfs_trans *, xfs_inode_t *, struct xfs_defer_ops *); -int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, - int, xfs_fsize_t); +int xfs_itruncate_extents_flags(struct xfs_trans **, + struct xfs_inode *, int, xfs_fsize_t, int); void xfs_iext_realloc(xfs_inode_t *, int, int); void xfs_iunpin_wait(xfs_inode_t *); @@ -433,6 +447,16 @@ int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, xfs_nlink_t, dev_t, prid_t, struct xfs_inode **); +static inline int +xfs_itruncate_extents( + struct xfs_trans **tpp, + struct xfs_inode *ip, + int whichfork, + xfs_fsize_t new_size) +{ + return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); +} + /* from xfs_file.c */ enum xfs_prealloc_flags { XFS_PREALLOC_SET = (1 << 1), @@ -443,6 +467,8 @@ enum xfs_prealloc_flags { int xfs_update_prealloc_flags(struct xfs_inode *ip, enum xfs_prealloc_flags flags); +int xfs_break_layouts(struct inode *inode, uint *iolock, + enum layout_break_reason reason); /* from xfs_iops.c */ extern void xfs_setup_inode(struct xfs_inode *ip); |
