3.2.71-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Nikolay Borisov <[email protected]> commit c45653c341f5c8a0ce19c8f0ad4678640849cb86 upstream. Switch ext4 to using sb_getblk_gfp with GFP_NOFS added to fix possible deadlocks in the page writeback path. Signed-off-by: Nikolay Borisov <[email protected]> Signed-off-by: Theodore Ts'o <[email protected]> [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings <[email protected]> --- --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -700,7 +700,8 @@ ext4_ext_find_extent(struct inode *inode path[ppos].p_depth = i; path[ppos].p_ext = NULL; - bh = sb_getblk(inode->i_sb, path[ppos].p_block); + bh = sb_getblk_gfp(inode->i_sb, path[ppos].p_block, + __GFP_MOVABLE | GFP_NOFS); if (unlikely(!bh)) { ret = -ENOMEM; goto err; @@ -905,7 +906,7 @@ static int ext4_ext_split(handle_t *hand err = -EIO; goto cleanup; } - bh = sb_getblk(inode->i_sb, newblock); + bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); if (!bh) { err = -ENOMEM; goto cleanup; @@ -1089,7 +1090,7 @@ static int ext4_ext_grow_indepth(handle_ if (newblock == 0) return err; - bh = sb_getblk(inode->i_sb, newblock); + bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS); if (!bh) return -ENOMEM; lock_buffer(bh); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
