diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_iops.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 264b1e7dacf7..9ddef91a436d 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -52,6 +52,7 @@ #include <linux/xattr.h> #include <linux/namei.h> #include <linux/security.h> +#include <linux/falloc.h> /* * Bring the atime in the XFS inode uptodate. @@ -794,6 +795,47 @@ xfs_vn_removexattr( return namesp->attr_remove(vp, attr, xflags); } +STATIC long +xfs_vn_fallocate( + struct inode *inode, + int mode, + loff_t offset, + loff_t len) +{ + long error; + loff_t new_size = 0; + xfs_flock64_t bf; + xfs_inode_t *ip = XFS_I(inode); + + /* preallocation on directories not yet supported */ + error = -ENODEV; + if (S_ISDIR(inode->i_mode)) + goto out_error; + + bf.l_whence = 0; + bf.l_start = offset; + bf.l_len = len; + + xfs_ilock(ip, XFS_IOLOCK_EXCL); + error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, + 0, NULL, ATTR_NOLOCK); + if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && + offset + len > i_size_read(inode)) + new_size = offset + len; + + /* Change file size if needed */ + if (new_size) { + bhv_vattr_t va; + + va.va_mask = XFS_AT_SIZE; + va.va_size = new_size; + error = xfs_setattr(ip, &va, ATTR_NOLOCK, NULL); + } + + xfs_iunlock(ip, XFS_IOLOCK_EXCL); +out_error: + return error; +} const struct inode_operations xfs_inode_operations = { .permission = xfs_vn_permission, @@ -804,6 +846,7 @@ const struct inode_operations xfs_inode_operations = { .getxattr = xfs_vn_getxattr, .listxattr = xfs_vn_listxattr, .removexattr = xfs_vn_removexattr, + .fallocate = xfs_vn_fallocate, }; const struct inode_operations xfs_dir_inode_operations = { |