From 681142f9211b23e6aa2984259d38b76d7bdc05a8 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sat, 21 Nov 2009 20:28:52 +0900 Subject: fat: make discard a mount option Currently shipping discard capable SSDs and arrays have rather sub-optimal implementations of the command and can the use of it can cause massive slowdowns. Make issueing these commands option as it's already in btrfs and gfs2. Signed-off-by: Christoph Hellwig [hirofumi@mail.parknet.co.jp: tweaks, and add "discard" to fat_show_options] Signed-off-by: OGAWA Hirofumi --- fs/fat/fat.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/fat/fat.h') diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 7db0979c6b72..e6efdfa0f6db 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -44,7 +44,8 @@ struct fat_mount_options { nocase:1, /* Does this need case conversion? 0=need case conversion*/ usefree:1, /* Use free_clusters for FAT32 */ tz_utc:1, /* Filesystem timestamps are in UTC */ - rodir:1; /* allow ATTR_RO for directory */ + rodir:1, /* allow ATTR_RO for directory */ + discard:1; /* Issue discard requests on deletions */ }; #define FAT_HASH_BITS 8 -- cgit v1.2.3-58-ga151